Chevrolet Silverado 2500 oil consumption problems

Filed Apr 15, 2026 · Engine · KY

On or about March 14, 2026 vehicle in question stopped working, losing all power and gave a message that the vehicle was over heating and to turn off immediately. A large amount of steam emitted through the coolant reservoir that was a mixture of oil and coolant. Vehicle was towed to a manufacturer service location. The oil/coolant system ruptured damaging the radiator, thermostat, hoses and related parts. Vehicle with low mileage/hours was consuming engine oil at what one would consider a greater rate. ( 1 quart every other day). Our organization is aware that the diesel model of this truck had a recall for a oil/cooling system issue and we believe the same liability may lay with the gas version. Mileage was approximately 13,000 at time of breakdown.

Filed Jan 6, 2026 · Transmission · MD

Supposedly The oil cooler ended up failing causing oil to be pumped into the cooling system at 26000 miles 8 months after purchase. A low oil message popped up upon start up looked under the hood a noticed no oil on the dip stick and a coolant reservoir full of jet black oil (supposed to be a bright red) and a fluid level higher than the normally observed coolant level. Thankfully happened in my drive way. It could have left me stranded had the engine completely run out of oil/overheated etc. Had the coolant reservoir broke/cracked due to the extra pressure and added volume in the coolant system it would have leaked a coolant/oil mixture in the engine bay around hot components of the motor. (potential fire hazard in my opinion) thankfully was able to get it towed to the dealer before any major leaks of the coolant system or catastrophic damage (that I know of) occurred.

Filed Aug 5, 2025 · Brakes, Engine · CA · fire

While driving on the freeway in a construction zone, I smelled a burning oil smell. I considered the possibility it was in relation to road repairs being done (roads being repaved, ie tar resurfacing). I was cut off by another vehicle and depressed my brakes and I saw a poof of smoke over the front passenger area near tire. I noticed all of my gauges were in the normal ranges (temperature, battery voltage, etc.) In less than a minute my truck went into limp mode and advised it had a DEF system issue and it would be limited to a set MPH and a set number of miles. Check engine light came on and another driver alerted me that the underneath of my vehicle was on fire. I pulled over to the side of the highway and my truck became engulfed in flames in. Truck is under factory warranty, unmodified, never been in an accident and has had all recommended services performed at local dealership. There was a significant amount of traffic and luckily I did not collide with anyone or set neighboring dry grass field on fire. Fire department responded and extinguished the fire, but it is a total loss. Insurance company has been notified, and vehicle will be available for inspection by appropriate agencies. While local law enforcement did respond, they did not take a report because I didn't hit anything, and the only property damage was my own. (There is documentation of the event, but just dispatch notes.) Prior to the situation above the truck had been at operating temperature for at least 20 minutes and I had traveled for about 20 miles on the highway. The total distance traveled from when I smelled the burning smell was maybe 1.5 miles.

Filed Mar 14, 2025 · Transmission · TX

Purchased a new 2024 Chevy 2500HD (Custom, 6.6L gas) on 12/14/2024. After doing some research on maintenance items for this vehicle, I observed the following: Rear axle - Little over a quart low Front axle - a little over .5inches low It was determined these fluids were not filled to the proper level from the manufacture. The dealership and extended warranty company (provide by the dealer) refused to warranty these issues.

Filed May 18, 2011 · Engine, Fuel system · 114,000 miles · WA

I have a 2002 chevrolet silverado 2500hd lt ext. Cab lb7 duramax 5 speed allison transmission, it has 114000 miles on it. This truck has been serviced as directed since new. The truck started using lots of fuel, at an idle it serged between 700 & 900 RPM's, and oil started blowing out the blowby tube. I have just found out that 3 fuel injectors are leaking fuel, with a possible head gasket leak,filling my crankcase with diesel, causing oil to blow out all over the truck, road and whatever else it can land on. While investigating what to do, to fix the truck I've found 3 other people I know that have duramax's, and they are going through the same problems. It's going to take me a year to save the money I need to fix this truck. I'm even going to do the work myself. In my opinion gm should be ashamed. They should at leased pay for the parts. The cheapest injectors I've found are $225.00 apiece with a $125.00 core charge. It's recomended that all 8 injectors be replaced at once. I've also been told these engines have defective head gaskets. That will cost another $600.00 for parts, and $110.00 for special tools I need to do the job. When I forked over the $40,000 cash inheritince money to buy this truck, I didn't signup for this.

Filed Mar 24, 2010 · Fuel system · 120,890 miles · MI

My 2002 chevy silverado with duramax diesel engine broke down while on a trip from michigan to florida. The diesel injector casing failed causing the crankcase to overfill with diesel fuel then caused oil and diesel fuel mix to come out of the engine while traveling down the road covering the underside of the vehicle and roadway as well as vehicles directly behind me. The gm dealer in georgia stated we were in by mileage but out of the extended 7 year 200000 mile injector warranty by 1year and 4 days and the cost would be $6250 to replace 8 injectors. They offered a 10% discount off that repair. Subsequent calls to gm customer assistance were made to no end (they stated the 10% discount was their best offer). I pleaded that the time limit should not be a factor as this should not affect wear (injectors do not fail when they are not operating) my vehicle has 120000 miles on it (well under 200000 warranty as stated by the customer assistance rep). I paid extra for the diesel for longevity and fuel economy as I am on a fixed income but wound up being treated unfairly especially for a known problem and the fact that oil/fuel blowing out on the highway and vehicles is a safety and emissions defect. I would like someone from the federal safety agency to consider investigating this aspect (time limit) and safety of drivers and fighting for me to get assistance. Thanks for listening

Filed Feb 20, 2009 · Engine · MO

My truck burns oil entirely too fast. I just changed my oil less than a week ago and my oil level light came on. It was probably 2 quarts low and I only put about 150 miles on it. This is unacceptable. I do have a lot of miles on my truck but everyone tells me this is normal. This has been going on since I purchased the vehicle. I don't know what else to do.

Filed Dec 6, 2008 · Engine · SD

2006 chevrolet 2500 pick-up w/8.1 motor. First there was faulty hoses causing low oil warning to come on. Now engine is low on oil with 1800 miles since last oil change. Had to put in 1 1/4 quart of oil. After engine break in. I switched to mobile 1 5w30 synethic. A recommended oil to use by chevrolet. Dealers service dept. Says its suppose to use a quart to 2000miles. I don't believe that with the modern technology of engines. Maybe years ago but not now. If that's the case then chevrolet should have said this engine uses oil. I guarantee you not many would have been sold.

Filed May 11, 2007 · Engine · NY

Engine 6.0l has piston slap, burns oil qt/700 miles, rough idle.

Filed Oct 14, 2003 · Engine · 30,000 miles · NY

2001 chevrolet 2500hd. 8.1 liter motor, allison transmission. The truck has multiple problems that the dealer is refusing to acknowledge and fix. *la -hard starting when hot. When the vehicle is driven and parked for 10 minutes, it will not start. Engine turns over, but does not fire. After an additional 2-3 minute wait, it will eventually start. This happens on a regular basis. Dealer had the truck for 1 week and claims he can not reproduce the problem. They suggested replacing parts with no garantee of the fix. -exhaust failing. The exhaust was replaced under warranty due to loose baffles. It is failing again with the same problem. Dealer again claims the noise is normal. -excessive oil consumption. I had it in for this problem. The dealer changed the oil and had me come in every 500 miles to check the oil level. It used 1 1/2 quarts in 3,000 miles. This is normal to use this much oil. How ever I tow a trailer and plow snow with this vehicle. During these times of towing and plowing, the truck uses 3-4 quarts of oil in 3,000 miles. There are no obvious leaks. The dealer again claims there is no problem. This vehicle was purchased with the large motor and heavy duty transmission specifically for the type of work I expect it to do.