Lmm duramax low coolant warning. First indicator about 6 weeks ago.

Lmm duramax low coolant warning Oct 29, 2011 · Well, it took a day, and a couple short drives, but once things got to "normal" temperature, and a bit more burping and filling and driving and burping and filling, the "low coolant" warning went away and it's working great! Nov 11, 2022 · I have a 2018 Denali Sierra 2500 with 6. Part ordered Trip 2 - Dealer replaced lower coolant tube. I would relive pressure off the resivoir and it would raise to just about where it should be. Sep 15, 2020 · 2018 Sierra Duramax 6. Factory gauge reads 210 and on edge Fits: 2006 thru 2010 Chevy Silverado/GMC Sierra 2500HD/3500HD LBZ/LMM Duramax Diesel. Dec 16, 2019 · Usually a low coolant temp warning is worn/stuck open T-stats that don't allow the engine to get as hot as it would like. 07. I had a pressure test and head gaskets are all good, is this a reservoir issue or thermostat??? I have a video I can post a video of what is happening. First indicator about 6 weeks ago. Dec 3, 2016 · Yes it would be safe to start it up, just keep an eye on your coolant level and twmp gauge and adjust coolant level as necessary Sent from my SM-G935V using Tapatalk 2009 Chevy 2500hd LMM, 5" straight pipe, EFILive, Banks Ram Air, Fass 150 lift pump, 6" Pro Comp Lift, 18" Fuel Krank wheels, 305-70-18 Mickey Thompson Baja Claw ATZ and some more Feb 15, 2011 · Ok or a bit of time now this has been going on. when i pop the hood the coolant surge tank is low on the pressurized side/ engine side and high on the non pressure/fender side. It was fixed under warranty so I left made it 3 miles and got the "low coolant light" turned around and Oct 21, 2021 · Low coolant light on my 2019 3500 with 26k keeps coming on, reservoir looks full but hard to see the lower level of the tank, dealer said sensor in tank is bad and ordered a new tank. Truck isn't over heating and coolant stays full after running the truck. I topped it off before leaving. Just gota find the specs. 6 that just turned over 100k, and it just gave me a low coolant warning a few days ago. I purchased a Surge Tank and changed it out myself. The dealer wanted $600 to replace. I suppose it could have been a fluke maybe hitting a round about going faster than I should have and the level shifted just enough in the tank to throw an alarm. I check the reservoir and its low I take the cap off to fill it and it bubbles up to almost full. There is a small capillary that allows coolant to come up to the cap. Sep 24, 2018 · 2009 Silverado 2500HD CCSB LTZ Diesel FASS 95 Lift Pump (with Baldwin filters), Edge Evolution CTS2 Monitor w/Dash Pod Mount, Factory FF as Tertiary Filter, Bilstein 5100 Stock Height, Steel Diamond Plate Bed Rail Caps, AMP Research Bedstep, Fumoto oil drain valve, PS Oil cooler, Pioneer AVIC 7200NEX GPS/Stereo, Air Lift LoadLifter 5000 Air Bags. Mar 1, 2015 · About 2 weeks ago, maybe 3, my low coolant level light came on and sure enough the level was low. May 3, 2021 · The coolant light came on a year ago when temp dropped under 50F degrees. Feb 18, 2014 · 🇺🇲🚛 2008 LMM 3500WT DRW Crew Cab, 8 'Flat/GN, Workforce Alum Toolbox, Ride-Rite Air Use-ta Haves-->> 2006-6. Jul 12, 2014 · Same problem here I unplugged sensor and inserted paper lip in plug still low coolant. Leave the service department, low coolant message comes on within 5 minutes Jul 13, 2021 · Been researching the low temps lately and came across this forum. I took it in to the dealer and they told me it was the EGR cooler. Nov 4, 2020 · Been getting the low coolant warning since I had the engine block recall done. They replaced it today so we will see if it come back on. 0. g. 2015 Chevy 2500HD Dmax LTZ1 - white -leveled on 20" stockers w/ toyo AT2s. You add coolant, and a few days later or the next week, 'low coolant' warning again. Even after cool-down, that excessive pressure is still held, resulting in the upper hose remaining hard to compress, even after several days of sitting. My last 2 Duramax’s had the same warning pop up…. If the sending unit is reading even a few pounds off, it reads dangerously low. May 30, 2019 · Coolant type and low coolant message. May 19, 2022 · I had the same problem. 5-2010 LMM VIN Code 6; 2011-2016 LML VIN Code 8; 2011-2016 LGH VIN Code L; 2017-2025- L5P VIN Code Y; 2020-2024 LM2 VIN Code T 3. When the low side pressure gets down to around 23 psi, the compressor will cut off. When I pop the reservoir, the coolant refills itself back to full. If necessary, repeat coolant fill procedure Steps 1–6. my level is not low I have drove the truck for 2 weeks without adding a drop and according to pen mark on tank it's at Jun 27, 2012 · Drove a few more miles, shut the truck off, loosened the coolant cap to relieve pressure (loosen very slowly), once pressure was relioeved i took the cap off completely. So, I am not convinced my problem is the May 12, 2019 · There is another, often overlooked thermostat between your turbo and coolant return tube. 5-2010 (LMM) Low coolant warning. The temps lately here have been pretty cold all the way down to -10 on some nights. swing nothing at all. Since I have had the low coolant warning twice. Replaces the aging, yellowed plastic Degas bottle. Had a "Low Coolant Warning" on dash. 🇨🇱 🚆2007 LBZ 3500 LT3 DRW Crew Cab, Sulastics, Putnam XDR 15K, B&W 30K-Turnover GN+Companion, Ride-Rite AirEFI'd by Rob Mar 7, 2022 · Anyone else had a low coolant message on their 2020-2022 2500 Duramax? My low coolant message has come on a few times even though my coolant tank is full. Checked my coolant level and it was full. Sep 11, 2023 · 2013 duramax Initially had a low engine temp warning. The float switch inside the coolant tank was bad, giving a low coolant warning. 5-2010 LMM Duramax OEM Placement Coolant Tank Kit Sep 11, 2015 · Just bought a 2015 brand new I have 2200 miles on it. Loosened reservoir cap and coolant came pouring out (not hot). Looks like programing that needs debugging. 5 GMC Sierra 3500 SRW L. 10. Top it off and see no sign of a leak. We left for home today and the plan was to stop as needed to top it off so I could get home. So, back to the dealer. Jan 20, 2020 · They replaced the pump. Just guessing this would not be covered under power train warranty, so I would need to figure this out and repair by myself. Upgrade the factory coolant reservoir on 2007. Very informative guys, and I've scene a few videos on replacing the stat's too. 6 lmm is the truck I was getting egr codes and engine coolant temp sensor codes, truck would go into limp mode. I have not yet found any obvious external leaks. Have not got this warning since. (2000 miles) Coolant on the right side of the split tank (toward the engine) was about 3 inches low, side toward fender was higher, but about 1 inch down (at the seam). Being a maintenance freak, I was going over all the worst case scenarios in my head, even though I could see that the coolant levels were OK. About every 150-200 miles it uses enough coolant to turn on the low coolant light, run it another 200-300 miles, it's always about 3/4 to 1 gallon of coolant. 2017 3500 SRW Denali - 18,500 miles Trip 1 - Dealer looked at it, found lower coolant tube leaking at a brazed/o-ring seal. When it comes to model variants, the Duramax engine showcases several iterations: LLY: Introduced as the successor to the LB7, this variant brought enhancements in engine cooling and performance. It should have a cold oil pressure reading an operating tempeture read at low idle and a pressure spec for high idle at operating temp. GM Duramax; 2001-2004 LB7 VIN Code 1; 2004. It will go from normal to low coolant warning after a hard 150-200 mile tow. The coolant line does not seem excessive firm when it is cooled off. Now, low coolant warning comes on. I look and sure enough the level is way below the seam. Dec 29, 2021 · I noticed that the level on the engine coolant surge tank was low, i was not getting low coolant notifications but just wanted to top the level off. With a low-coolant warning, you now have air trapped in the system. bleeder screw, WIF sensor delete plug, Fumoto oil drain valve, Pacer LED cab lights, GM dually light bar under tailgate, Footwell lights, Cobra 29 WXNWST CB radio, Wilson 2000 CB antenna, Kenwood speakers, GM chrome oval running boards, Bilstein 5100s, Michelin Feb 25, 2023 · Ok ill definitely check that out tomorrow, and ill be honest im not the brightest and im not too mechanically inclined but I hope the sound im hearing isn't indicating a head gasket failure, I haven't noticed any smoke or power loss. 0 3500 WT DRW ExCab Flatbed, 2005-LLY 3500 LS DRW Crew Cab, 2002-LB7 3500 LS DRW Crew Cab Feb 17, 2013 · 2023 GMC Sierra AT4 3. The LMM loses oil pressure in a big way when the engine heats up while towing. But, this morning, 10" puddle under the driver's side front wheel area, smells like Antifreeze. My first attempt to create YouTube Video. if you still had access, a firm top rad hose in the 2007. The tank is not low but I topped it off right to the cap and the message still pops up. I drove the truck from KC to north of Dallas on its maiden voyage with no issues. Last night I got the low coolant level warning on the dash , truck ran fine , no real temp. 5-10 LMM Forums. Oct 23, 2024 · Two months ago I bought a 2022 Sierra 2500 HD Duramax with 52K miles on it from a GMC dealer in Thornton, CO and drove it to my home about 2 hours south of there. Aug 3, 2016 · UPDATE, got another Low Coolant Warning Got a new low coolant warning this A. '11 LML, '10 LMM and 04. 2 gasser, DIY stock AirBox Mod, K&N, Airaid intake, EFILive TCM only tuning. I read oil pressure off my edge cts. Temp was about 140-160. Jan 9, 2025 · So I have been driving with low coolant level warning to see if it ever runs even slightly above normal. If the coolant was actually low from that block heater work it would pull from the top tank? A friend of mine had a low coolant light as well. 6 - I've been getting a low coolant warning message on the dash. Truck cool down all the way below 5psi like it is supposed to. I have replaced the cap and bought a whole new coolant tank with new sensor. Pretty much just low in the mornings before first daily start-up. I checked the overflow, and it is showing full. I would clear the Nov 10, 2015 · So here it goes. 2013 and a 2018. Apr 29, 2024 · Hi all, my 2014 gmc 2500 keeps getting the “coolant low, add coolant” message on the dash. Noticed reservoir was full. 5 LLY. Your truck oil pressure might just run a little low Im not sure. Once the truck gets to operating temp i get the low coolant light pop up. The coolant would be a tad low, just enough to trigger the sensor. Apr 18, 2021 · I am having a coolant issue. B. C. Is there a separated tank below that? There's a cap on the side of that one, between the tank and the side of the truck. 9L 12V Sep 28, 2012 · Coolant Always going Low!!! Thanks guys for posting the articles about the coolant problems. So I transferred all the coolant out of my old tank and the reservoir is FULL of black flakes. Expertly designed to provide a leak-proof connection between the lower hose and radiator, the Duramax Lower Radiator Hose O-Ring(s) guarantee a hassle-free replacement. During sales pitch from stealership I am told they had just completed a 36kmi service upon taking in the truck (YEAH RIGHT!! Dec 27, 2017 · 2008 LMM 2500HD CCSB LTZ abs warning and low coolant warning come on during that first drive. 0 3500 WT DRW ExCab Flatbed, 2005-LLY 3500 LS DRW Crew Cab, 2002-LB7 3500 LS DRW Crew Cab Jul 5, 2017 · Missing Coolant New to this, hope this is correct. Sep 24, 2020 · The cooling lines circulate coolant throughout the transmission to prevent overheating. Before the egr valve install the guage in the dash would work, now it stays on 0 Aug 31, 2017 · 2007. I kept having to replace coolant because the warning light would come on and their was never any on my shop floor. My first thought was that my sensor had gone bad. I got the warning again today and it took another pint +. Sep 29, 2016 · If the coolant level is still low after having followed these steps twice, have the coolant system checked by a certified technician at the dealer for a possible leak. A forum community dedicated to Chevy and GMC Duramax diesel owners Nov 22, 2016 · I got a coolant low warning. '18 2500 L5P CCSB 4x4; '11 LML, '10 LMM and 04. The coolant in the tank is at the correct level - cannot add anymore. This thermostat threads into the metal coolant return line bolted to the t-stat housing,connecting to the upper radiator Sep 20, 2012 · sold: 01 lb7 drw cclb 1 ton 4x4 GM DRW club member #95 15' srw ccsb 3500 Denali debadged, 35% tint on the front half glass and 5% over stock tint on the back half glass, line-x bed, leveled with cognito stage 3 with stock keys, 20x12 fuel throttle wheels, 285/55/20 Mickey Thompson atz p3 tires, 5000k 55w hid headlights, led fogs, amp auto steps, 90 gal transfer fuel tank, b&w ball hitch, B&W Jul 17, 2012 · False Triggering Of Low Coolant Level Warning Message (Reprogram HVAC Control Module) Models: 2007-2008 Chevrolet Silverado 2500 and 3500 Heavy Duty Series Only 2007-2008 GMC Sierra 2500 and 3500 Heavy Duty Series Only with 6. Having a hard time if you have a book on your truck it will be in there. LMM: The LMM version focused on meeting stricter emission standards without compromising on power. They went to add coolant and I already had a feeling it was going to be bad and they found coolant reservoir topped off with oil. I let the techs know, they check and reservoir is almost empty. I got the low coolant warning and turned out there was a rubber cap on a heater hose (used to run to the EGR I think) that was slowly leaking. then the Heater works, then the temp plumments, low coolant warning. What next,any suggestions ? First duramax 2007. I topped off the coolant in the tank and it was fine for a day or two, now its back. I have a 2001 LB7, Been fighting this for about a year. Jan 1, 2019 · It runs great, except for the coolant loss. 5-10 LMM Duramax Powertrain Aug 15, 2017 · 2009 GMC Sierra 2500HD SLE CC/SB 4x4 LMM EFI Live, Edge Insight CTS, Flo~Pro 4" DP back exhaust w/ muffler & stock trumpet tip, Alum. So mine was originally caused by low coolant and than by an air lock in the cooling May 13, 2011 · I have a 2017 GMC 2500 HD with the 6. I was unable to locate a leak, so I wasn't sure if it was leaking or being burnt. When towing my 38 foot 5th wheel my coolant temp gets up to 230 and I have to back way out of the pedal to get it to cool. Check for proper coolant level. "BLACK" C. I had been getting low coolant messages on and off and then it got to a constant message every time I started the truck. Jun 18, 2020 · 19 3500 low coolant comes on, fluid is full has about 11,ooo miles on it [/QUOTE Same here, 2019 3500. Oct 20, 2021 · I had a low coolant light warning and a small 4 inch puddle of antifreeze under the front driver's side of the motor, was told it was probably just the water pump. Apr 6, 2011 · Then 3 weeks ago while driving on the hwy. After sitting all night the upper rad hose is firm, not tennis ball hard but not soft either. Checked and tested coolant for exhaust gases and none found. Non-metallic. Say it's a faulty surge tank sensor, want to charge $520 to replace. Apr 23, 2020 · As the compressor compresses the low pressure gas on the low side, it "sucks" freon from the low side and pushes it to the high side - thus the low side pressure will drop as the compressor sends more freon over to the high side. Follow the appropriate procedure based on the condition of the coolant. 28 - 30 PSI at 3k rpm when towing a big hill was not unusual in my truck. well we'll see how that works out, I'll let ya all know. Nov 17, 2017 · The first time I hook up the truck to the trailer I get about three miles and the low coolant light comes and the engine shutoff light comes on. But also the service records indicate it's already a water pump replaced years ago along with wheel bearings/hubs and new belt on it and it's had its oil changed every 6 months, the Dec 16, 2020 · Then pour coolant in slowly until it begins to go in the small hole at the windshield side of the top neck. Apr 1, 2014 · Duramax Fourth Generation: 2007. 5 LLY Jan 30, 2017 · Duramax Fourth Generation: 2007. 5 Silverado 3500 hd crew cab long bed Z71 4 x4 . He's on his way over to my house for me to check. Sep 20, 2010 · Chevy / GMC Duramax 07. When I got out, smelled coolant,, walked around to front passenger side and coolant was coming out all around fendewell. 🇺🇲🚛 2008 LMM 3500WT DRW Crew Cab, 8 'Flat/GN, Workforce Alum Toolbox, Ride Feb 7, 2015 · got a low coolant level warning last night. Sep 4, 2009 · Does anyone else get the low coolant level warning light while out four wheeling? It usualy happens when I'm climbing a steep hill or at extreme angle. Oct 23, 2023 · DHD 500-114 LMM Coolant Line Relocation Kit When installing aftermarket manifolds or tubular headers on your 2007. 5-10 LMM Duramax Powertrain coolant loss cant find Dive a couple hours the low coolant light will come on and will have to add on average 1/2 gallon. The same day about im driving to work and coolant light comes on again. That is the overflow/surge/puke (whatever you prefer) side and no reason to remove that lower cap. Only once he filled the bottom part of that tank did the low coolant warning go away. blend in them with additive (both my 94 6. no low coolant message the whole way to SC. I just returned from a 2000 mile trip and I see that it is down about 5/8 of an inch from the proper level. Oct 18, 2022 · 6. Following the directions in the manual I added coolant. Jan 5, 2020 · However, recently I have been getting "Low Coolant" on the DIC. 2007. I'll get an low oil pressure warning get back on the throttle. If the coolant level is still low after having followed these steps twice, have the coolant system checked by a certified technician at the dealer for a possible leak. The second time it was down a little. Aug 9, 2013 · Chevy / GMC Duramax 04. Apr 4, 2019 · 🇨🇱 🚆2007 LBZ 3500 LT3 DRW Crew Cab, Sulastics, Putnam XDR 15K, B&W 30K-Turnover GN+Companion, Ride-Rite AirEFI'd by Rob 🇺🇲🚛 2008 LMM 3500WT DRW Crew Cab, 8 'Flat/GN, Workforce Alum Toolbox, Ride-Rite Air Correct replacement sensor for WCFab Fabricated Coolant Tanks designed for LB7, LLY, LBZ, LMM and L5P Duramax trucks 2001-2010 & 2017-2024 Duramax Low Coolant Level Sensor 630-277-8239 Mon-Fri: 8:30am - 5:00pm CST Jan 20, 2011 · Jonathan 2014 2500HD LTZ Z71 4X4, EDGE Insight, B&W Turnover Ball w/Companion. Verify coolant level after the engine is shut off and the coolant is cold. I open the cap, pressure rushes out and the coolant rises back to the MAX line on tank. Aug 8, 2013 · 9. Jan 2, 2012 · I'm in the low coolant warning club. Bone Stock (for now) 2006 2500HD LBZ 4X4 6 speed Allison "LT3", Airaid Cold Air Intake, EFI Live DSP5 Tuned by Rob, PCV Reroute, Transgo Jr, EGR Blocker, HID Low/High/fog 8000K, Headligh All On Mod, Recon LED Smoke Cab Lights, Magnaflow 5" DP Back Exhaust, Autometer Boost/EGT Gauges, Edge Insight CTS w/Backup Camera Jan 16, 2018 · I recently began having low coolant warnings and my truck has trouble starting when cold outside (e. This seems excessive to me. Remove the coolant surge tank pressure cap when the cooling system, including the coolant surge tank pressure cap and upper radiator hose, is no longer hot. His is stock, mine is deleted. I added again. 5-2010 (LMM) Low coolant. Talked to a supervisor at Chevy & the best they can do is take $100 off the Mar 11, 2021 · I have a 2006 duramax with an egr delete kit, (hsp max flow ybridge and down pipe) everytime I crank the truck it flashes low coolant level on dash. 7K Once in a great while I would also get a low coolant warning. The surge tanks is full, checking both when hot or cold. Dec 8, 2023 · Model Variants: LLY, LMM, L5P, and Others. Took it to a mechanic, we pressured up the system and it held for 24 hours. M. Sep 27, 2015 · The engine control module (ECM) uses this diagnostic to determine if the engine coolant temperature (ECT) has reached the minimum calibrated thermostat regulating temperature. Within a week I got a coolant low warning, and took it to the local Chevy dealership. Nov 22, 2015 · However, that is almost always a chronic slowly building problem, usually 1st noticed by the 'low coolant' warning appearing on dash. I've got repeated low coolant warning on chevy silverado 2500 4WD 8. removed the tank (and wiring), dumped out the nasty water in it and used "dawn" or whatever dishwashing liguid you have and partially filled with water and shaked it around a bunch. My truck has lost coolant since about 6 months in which was the first time I noticed it was low. The OEM LMM cooling lines have a fatal design flaw which causes them to leak at the crimp. 5 May 20, 2019 · Duramax Fourth Generation: 2007. 2023 LZO CC std box 4x4 previous: 2021 LM2 CC std box 4x4 ; '18 2500 L5P CCSB 4x4; '11 LML, '10 LMM and 04. When I got home after purchasing it, I had a low coolant message (that was at 390 miles) I added coolant, and at 1500 miles I noticed that it was down a little. When I finally can pull over the engine shuts down the moment I stop. Filling Procedure 1. I noticed a small amount of coolant on the garage floor within a few days. 6 Duramax. 1 L duramax, but no (obvious) sign of coolant leak Jul 24, 2013 · Lbz low coolant warning Jump to Latest 3. 6K views 8 replies My buddy has a 2016 and I have a 2015. Shop at DmaxStore for your Duramax needs. Restarted engine warning went away. Two days later after about 150-200 miles low coolant light again. The first time, it took 3 pints to fill it to the mark when it was cold. 6L Diesel Engine (VIN 6 - RPO LMM) Nov 13, 2012 · The ECM is calculating an expected Coolant Temp given the fuel that has been burned and the time that it has been burning it. Sep 10, 2010 · Drivetrain LMM Duramax, Allsion 1000 Transmssion Performance Mods EFI Live and DSP 5 By MMLMM, RBP downpipe back exhaust (no CAT or DPF), TransGo Jr, Mag Hytec transmssion and rear end covers, PPE Air Box Mod, Resonator Blocked, Auto Meter GS Boost, EGT, and Transmission gauges, Auto Meter triple pillar with speaker cutout. Jul 10, 2018 · 9/2018 I went to the dealer as I had the low coolant indicator for the third time in 6 weeks, each time I added a 1/3 gallon to "fix" the problem (I knew about the low fill issue from the factory). Have non bubbling in the reservoir and when running everything is operating normally. Notice: The procedure below must be followed. Improper coolant level could result in a low or high coolant level condition May 30, 2020 · 07. Oct 26, 2010 · I just had the "low coolent" light trip for the first time last weekend during an off-road excursion. Are these two problems related? Or is it just coincidence? BTW my coolant reservoir is full. 2007 Yukon Denail "BLACK" 6. A hiss was heard from the tank. I pulled the code and it says the DEF injector is faulty. He gets the low coolant light randomly even if it's not low on coolant. it'll throw a low Feb 3, 2011 · 2021 gmc Sierra cc, 3. Next day I get the "low coolant" warning. 4X4 LMM Z71, DIY stock airbox mod, aFe ProGuard 7, OEM drop-in, ECM and Trans tuning, AD 100 4G LiftPump. No biggie. Low, coolant warning Got a 2019 gmc HD, 2 weeks low coolant warning pooped up on my dash ,so I went to a get coolant to fill it up but I popped open the hood and saw the tank was still topped off, as I took off the cap I guess it depressurized itself and coolant started spilling from the bottom. 2008 Chevrolet 2500 LMM CC/SB Duramax 4X4 Hers r4tech Viair 350C EFI Live 2011 Keystone Fusion 405 TrailAir & Triglide, Centerpoint Dec 18, 2020 · Wait for the cooling system and coolant surge tank pressure cap to cool if you ever have to turn the pressure cap. LMM: Jump to Latest Does it loose enough that your low coolant light comes on. After a few months now and driving a lot and in various conditions from fast on interstate to traffic conditions and even just idling for 20 minutes at a time and temperature never gets above operating temp of 210 degrees. I am on very narrow roads in Kentucky with no place to pull over. He replaced the tank/sensor and still had the light. Mar 3, 2015 · Chevy / GMC Duramax 04. I have a 2011 duramax lml with 211,000 miles tuned since 20k i normally run the eco plus tow from Kory. Oil level stays good, but the main coolant tank continues to go down. my low coolant light comes on. LML - Coolant level low message | DuramaxDiesels. Found the tank on Amazon for abiut $60, took an hour to change. Then it got cold again… (cold for a swamp rat like me). No mention of seeing coolant mixed in the oil. Check levels doesn't need any fluid. then the block heater fix. 5-10 LMM Duramax Powertrain '08 LMM Cold Weather Problems. 5-2010 (LMM) Loss of coolant. 2021 LM2 CC std box 4x4 ; '18 2500 L5P CCSB 4x4; '11 LML, '10 LMM and 04. Jul 5, 2017 · Missing Coolant New to this, hope this is correct. 5 LLY A forum community dedicated to Chevy and GMC Jun 23, 2020 · I have a 2010 3500. my big concern was that the truck had 24k miles on it and that seemed a bit long to go having just a low fill from the factory issue pop up. Jump to Latest 1. 2018 GMC Sierra 2500HD Diesel Feb 4, 2010 · The ECM is calculating an expected Coolant Temp given the fuel that has been burned and the time that it has been burning it. I added 50/50 gm approved coolant. I have no visible coolant leaks, did a coolant pressure test and only got 8psi when the thermostats opened (Operating Temp). Oct 17, 2024 · No visible leaks and nothing from the over flow tube. They fill it, complete oil change and send me on my way. Both phenomona began the same day and persist even after having dealer check for leaks, bleed cooling system, load-test batteries, check alternator, etc. May 15, 2007 · 3000 miles warning came on today. I'll usually then see the low coolant msg flash. I'm guessing the dealer didn't properly refill the coolant? I took it back to the dealer & they refuse to cover anything. Had the low coolant message pop up every time I started truck. Jump to Latest Apr 28, 2009 · I have 3600 miles on my new 09 LMM. 0 Duramax '10 LMM and 04. Jan 24, 2015 · they did not use the tracing dye. I called the dealership and they are going to replace my tank. I have a 2011 GMC 3500HD dually 4wd 18,765miles. Replaced cap and havent had an issue since again. I have to top it off every 4 to 6 weeks. Once i unscrewed the cap on the engine coolant surge tank, #2 in the attached picture. 1 L duramax, but no (obvious) sign of coolant leak Mechanic's Assistant chat Customer: I've got repeated low coolant warning on chevy silverado 2500 4WD 8. So I changes both thermostats and fixed that issue [no more warnings]. I got the truck back this past Monday. Ok so yesterday I had a low coolant light warning so I checked and it was 2 quarts low. ran for a few weeks, no problem. The level did appear low both times and both times it was cold. Nov 18, 2014 · With the design of the multi-chamber coolant tank, it eventually builds and starts forcing coolant out the overflow. Turns out to be a failed sending unit sensor in coolant res Jul 9, 2021 · It will heat up a little slower than normal to op temp (185), then after a few minutes go down to about 150-160 for a few minutes. Factory gauge doesn't drop below 25 psi. It looks to be empty. May 21, 2011 · I'm trying to find the engine oil pressure specs for your LMM. 5 Chevy 2500HD CC - 5" FloPro Turbo Back - EFILive by Dan's Diesel Performance More to come hopefully Sep 27, 2012 · False Triggering Of Low Coolant Level Warning Message (Reprogram HVAC Control Module) Models: 2007-2008 Chevrolet Silverado 2500 and 3500 Heavy Duty Series Only 2007-2008 GMC Sierra 2500 and 3500 Heavy Duty Series Only with 6. Feb 11, 2008 · #08-08-49-002: False Triggering of Low Coolant Level Warning Message (Reprogram HVAC Control Module) - (Feb 13, 2008) Subject: False Triggering Of Low Coolant Level Warning Message (Reprogram HVAC Control Module) Models: 2007-2008 Chevrolet Silverado 2500 and 3500 Heavy Duty Series Only 2007-2008 GMC Sierra 2500 and 3500 Heavy Duty Series Only Feb 25, 2017 · So Way Back in June of last year the low coolant light popped on the way to job site , so I stopped and got a gallon of dexcool and got to job, let it cool down for 4 or so hours popped the hood and sure enough I needed about a 1. Apr 26, 2011 · 2015. 5 quarts of coolant. Jan 16, 2025 · I take it in for an oil change and on the way there a warning light comes on that says low coolant level. Seems that the sensors can fail and they are part of the tank. Oct 16, 2017 · If the top portion of the tank is full and you have the low coolant light the switch is intermittent or failed. ^ Normal in appearance—Follow the filling procedure. Jun 3, 2011 · Need some help!!! Just drove 4 1/2 hrs to remote part of lake, dropped boat in and engine stalled backing down ramp - scary!!! Now the low coolant warning light comes on and the truck goes into engine shutdown. Perform Coolant System Leak Test. 5 diesel and my 15 Jun 10, 2011 · LMM runs borderline low oil pressure normally, add heat and towing and it drops even further. Jan 2, 2021 · 6. . all good. Truck has 150k on it 06 lly. After filling it up I then checked the upper radiator hose after sitting overnight, there was still coolant in the overfill tank, it was not hard and I could hear coolant being pushed into the engine. My 08 lmm has the low coolant message after i run it to full temp and let it sit overnight Feb 3, 2020 · Well as a minor update, I still haven't gotten to the store to pick up a jug of coolant, but have been driving the truck and there has not been a low coolant warning since. 5-2008 LMM Duramax Diesel you will notice that you will also have to reroute your EGR cooler line because of clearance issues. then you can hear the sensor click as you turn the tank right side up and up side Mar 29, 2017 · 9/2018 I went to the dealer as I had the low coolant indicator for the third time in 6 weeks, each time I added a 1/3 gallon to "fix" the problem (I knew about the low fill issue from the factory). Got out and checked my tank and everything seemed fine. Mar 18, 2012 · 2015 Duramax Coolant Leak w/900 miles Howdy, I'm new here and unfortunately my first post has to do with a leak on my new 2015. low again… filled properly… no more light… but now the tank is completely full!!! Feb 7, 2018 · Hello all, I just took delivery of a new to me 2015 GMC Sierra 2500HD SLE Duramax. Fill it until coolant begins to come out if the home where the lower cap is. , anything below 32F). LMM: Jump to Latest 21K You loosing enough that the low coolant level" Light comes on? Jan 2, 2015 · 1 - After driving with the cruise set at 70MPH for about 1. 5-05 LLY Forum. com 2001-2007 Duramax Fabricated Aluminum Coolant Tank Kit from WCFab mounts in the OEM location. I bought the truck end of November and didn't have a issue at all until just now. Sep 6, 2023 · The top tank is always filled to the markers and I check often. Then the temp will rapidly climb to 250 hold for 3 seconds (get associated hot engine warning) then it will drop rapidly back to 185 +/- 5 and hold rock steady. I completely replaced the egr valve, I did not do the cooler though while trying to be frugal. The first low coolant warning came withing 25 miles. This had never happened before. Jan 6, 2025 · I have been having the dreaded "Low Coolant Warning" 2012 LML fully deleted 223k miles. I did not have any coolant with me so I figured I'd limp it to the nearest gas station/parts store. 6L Diesel Engine (VIN 6 - RPO LMM) Condition Nov 12, 2024 · I've got a 2006 LBZ that is losing coolant when towing. 38,500 miles on 12/15/2017. I was told if the sensor is exposed to air a few times it burns out, apparently. The ECM supplies 5 volts to the ECT signal circuit, and a ground for the ECT low reference circuit. Apr 8, 2011 · My brother just called and told me last week his low coolant light came on, for just a minute, went off, hasn't been on since. 0L; 2017-2024 L5D VIN Code ; Dodge Cummins. 5-2005 LLY VIN Code 2; 2006-2007 LBZ VIN Code D; 2007. Checked the coolant level the next morning and it has lost nothing , but under pressure as usual. Dec 8, 2016 · After driving and the truck get up to temp. can't find a leak. Is this normal temperature for an LMM? Feb 18, 2014 · 🇺🇲🚛 2008 LMM 3500WT DRW Crew Cab, 8 'Flat/GN, Workforce Alum Toolbox, Ride-Rite Air Use-ta Haves-->> 2006-6. Jan 28, 2015 · Low coolant level message. If the coolant temp does not meet or exceed the calculated temp, you get the code. Amp steps, 28" rigid combo incognito mount behind the grill. but thought it was really weird i get a low coolant light and then 10 minutes into the drive i hear that weird whine, after giving it like 75 percent throttle to Dec 21, 2007 · Duramax Fourth Generation: 2007. Test it and go from there Jun 22, 2013 · 2010 2500hd duramax lmm z71 ccsb ltz 18" Dick Cepek Wheels | Cooper STT Maxx 295/70r18 | Edge CTS | Alligator Performance Stage 1 DPF Delete Package: 5" Magnaflow straight | PPEI DSP5 Tunes | 3" MBRP Downpipe | AFE 5x7x12 tip |Dan's Diesel Performance Stage 2 intake Aug 19, 2021 · 2008 6. I have replaced the thermostats, fan, fan clutch, both fan shrouds, and the radiator. Jul 23, 2007 · lmm coolant level low message My low coolant level message came on twice in two weeks. Dealer is now telling me bad head gasket(s) is causing both issues. Since then, about 18 months or so, I have had to add a total of about 1 1/2 gallons coolant. Jan 6, 2014 · Chevy / GMC Duramax 07. 7K views 6 replies 5 participants last post by jc1843 Jul 25, 2013 Mar 20, 2019 · So sitting at 33k on my 17’ and the low coolant warning came on few weeks ago. levels are even in both sides of expansion tank. I check the coolant and it is ok. 🇺🇲🚛 2008 LMM 3500WT Jan 23, 2012 · Mines not that accurate. 6L LMM Duramax trucks with a HSP factory replacement. Any suggestions? May 30, 2010 · 2011 GMC Sierra 2500HD 4x4 Ext Cab LML Duramax Cognito Platinum Leveling kit with FOX Shox 2006 GMC Sierra 2500HD CCSB 2WD LBZ, Banks Six-Gun w/PDA, Magnaflow 4", TB PCV re-route & Trans lines, Weathertechs, AVH-P3100DVD, Focal Access 165s, Bushwackers, Caterpillar batteries PN#127-0826, Energy Suspension Body Mounts Jul 17, 2021 · I am in the middle of installing a new coolant reservoir on my 2017 with 30000 miles. 5-2010 LMM Duramax Fabricated Aluminum Coolant Tank Kit from WCFab mounts in OEM location. any ideas? 2015 Chevy 2500HD Dmax LTZ1 - white -leveled on 20" stockers w/ toyo AT2s. Went on for 4 starts then took to dealer where I bought it. Feb 17, 2021 · Apologies upfront. And the coolant gauge is worse. If necessary, repeat coolant fill procedure Steps 1 through 6. One thing I'd like to rule out (or in) is an EGR cooler leak. 5-2010 Chevy/GMC 6. 5-2010 (LMM) Coolant System Issues. Now I am just getting coolant temp sensor codes. Most prominent tell-tale? Hard (like a tennis ball) upper rad hose after sitting overnight, or even several days later. The truck now has about 35,000km on it and the low coolant message is appearing at almost every start up. I got sick of taking it to the stealership for low coolant warning after bockheater recall. Dodge Cummins; 1994-1998 5. It will go away and then come back even after I have cycled the engine on and off a few times? Jan 18, 2025 · I got a coolant level low message the other day. ^ Discolored—Follow the flush procedure. If no coolant is visible in the surge tank, add coolant as follows: 1. You will see coolant flow down the raised portion on top of the tank then down the side into the lower reservoir. 5hr the low coolant warning message came on. Jump to Latest 3. I pulled over at the nearest rest stop, popped the hood and sure enough the coolant level showed well below the "Min" mark on the reservoir. 0L; 2023-2025 LZ0 VIN Code 8 3. It is located behind the AC compressor between the 11mm turbo coolant return line and the metal return line that comes off the t-stat. Caution Mar 19, 2023 · I recently got a low coolant message and then a day or two later the check engine light came on. It sits over the weekend, I hop in it and get the same Mar 14, 2011 · I have been watching my coolant level for weeks now and no problems. About 50% of the time I drive my LBZ shortly after startup I get a low coolant warning, but when I check the reservoir it’s right up to the fill… Aug 11, 2018 · Thanks for the advice! The truck has 217k miles however, previous owner had some aftermarket stuff done to it, so probably drove it hard. What am I missing? Dec 3, 2013 · my coolant is low light has been on for months and i saw a thing on utube about a possible fix so i tried it. When lines leak, the transmission can get low on coolant which results in transmission overheating and potentially serious damage to its internal components. The lower portion of the tank should have very little coolant in it. Had a hard time refilling coolant to the lower compartment. In the hot of summer pulling I have seen oil pressures drop to 11 psi reading cts going to idle after hard pull. When cold, I added fresh coolant pre-mix to “full”. repeat a time or two. It's apparently somewhat common. Inspect the coolant. The first time it took a 1/2 gallon. The low coolant message would pop up once in a blue moon. I have since driven hundreds of miles and have not seen any irregular engine temps, but have received the same message a few more times. If the coolant level is still low after having followed these steps twice, have the coolant system checked a certified technician at the dealer for a possible leak. Sep 7, 2021 · So in the past week and a half, I have been getting the Low Coolant warning on the dash. GM Duramax. I added coolant and today the light came back on and sure enough the level was low. Inspect fan for proper operation. I have the Mini Max tuner, which reads the coolant temp, much better and accurate than the factory gauge. The other night I drove about 7-8 miles to the store. I think that an air bubble must have passed by the sensor and tripped the warning light ,(not sure). Capacity is approximately 1/2 gallon. we will see if it pops up tomorrow. the low coolant light came on , checked the coolant level the next morning and it was not low , and no coolant light the next day. ikxv php zfng fbfci qgnz ltyn ysvx cueg kmccn jylbja