2023 GMC Sierra 1500: excessive oil consumption

Filed Oct 30, 2026 · Engine, Fuel system · AZ

Recall: The GM 6.2L V8 (L87) Engine Safety Recall (Recall No. 25V274000) May/June 2025 Purchased Vehicle:[XXX] Recall “Fixed”: [XXX] passed the Pico test @ Findlay GMC, Prescott, AZ Oil Consumption: [XXX] - Used 3 qts oil over 7k miles Was informed by Dealer that the accepted rate of oil consumption was 1 qt per 2k miles Engine Failure: [XXX] - Catastrophic Engine Failure (Low Engine Oil Pressure) resulting in total lack of propulsion and shutting down of engine while traveling 65mph towing a trailer Towed: [XXX] to Findlay GMC, Bullhead City, AZ INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 16, 2026 · Engine · MI

A 6.2 engine operated as expected for 75,000 miles. I turned a corner at an intersection, and had a loud knocking in the engine occur. For the first 75,000 miles, there wasn't any unusual engine noises or oil consumption.Seconds later the engine light illuminated on the dash, reduced engine power, and every safety light within the dash was going on and off. I managed to drive slow and return to my residence and have the truck towed to the dealership to have the engine replaced. As many have learned, the recall from GM states to either pass a PICO test and change to 0W-40, or have the engine replaced if necessary. My concern is that the replacement engine is the exact same engine with the exact same components that assuredly will fail due improper design, production, and overlooked components that attribute to such failure. The crankshafts are being found to have values of "peaks and troughs" within the finish that are many times out of given specifications. The extraneous pressures created by the Dynamic Fuel management system over time are creating stresses and friction that the designated oil and oil pump are not compensating for. These mechanical stresses over different durations, seem to be part of the cause of the engines failure. The replacement engine came with a warranty that only extends to an odometer reading of 150,000 miles. I no longer have confidence in a manufacturer that is enforcing false resolve upon a customer as a solution. The new engines of replacement have been failing as well. This result exhibits a fact that shouldn't be ignored. The new engines have the same components and are due to fail, just the same as the original. I would like the manufacturer to resolve this failure by offering a "true" solution. A proven remedy and a documented warranty that assures the manufacturer stands behind the product. GM sells a new product that fails and then recalls the engines to replace with the same failed components and lack of warranty.

Filed Oct 11, 2026 · Engine · ND

1) Driving on highway and lost acceleration power would only go 50 mph/went into limp mode. Dealership stated VIN number had not been released into national safety recall. Replaced crank shaft valve and was told once VIN was released I would be reimbursed, to date still in dispute. 2) low oil light came on, upon checking oil was extremely low and oil had just been changed during #1’s repair. Had towed to dealership. Engine was replaced under recall. Was charged for water pump which is in dispute. 3) shortly after and well before oil change would be due, low oil light came on again. Towed back to dealership dip stick bone dry. I asked the store vehicle inside. Called for diagnosis at 5pm stated no codes no leaks found needed to investigate further. 4) 9am following day received a vm the truck had been repossessed by GM (note there is only 10K remaining on a special order 72K truck) dealership has not responded to requests to determine if the issue was fixed or request for service ticket to know what had been done. GM Financial claimed dealership told them it “was just a part under warranty” well the warranty came from the replacement engine that was under the recall…upon talking to reinstatement dept I was informed the vehicle was not fixed. I will be redeeming the vehicle but I do not think it is right to repo during a safety recall and then auction off not fixed as that is a safety issue! Once redeemed, it is also a safety issue to get from auction lot to be repaired.

Filed Mar 12, 2026 · Engine · MT

Engine with leas than 40,000 miles is consuming one (1) quat of oil every 2,000 miles. GM dealership showed me the internal GM service update stating the accepted rate of oil consumption for engines uses in the vehicles referenced is 1qt per 2,000 miles. That may seem acceptable because GM put it in a notice to dealerships but I assure you the end consumer would never buy this engine if this was explained prior to purchasing. There is a reason new cars to not consume oil (at least not at a level you need to add oil between oil change intervals) at this rate. Long term wear and tear on the engine - note Gm offered a warrantee covering 100,000 miles, which is nice but the problems will become more severe over time and miles. I consider this borderline criminal as it will surely cause engines to lock up.

Filed Feb 23, 2026 · Engine · MN

After 5000 miles between oil changes, the engine had burned enough oil to have no oil in the dipstick. This equals at least 3 quarts oil if a 7 quart capacity. The dealership states this truck burns a quart to quart and a half every 2000 miles. This seems like an excess amount of oil consumption.

Filed Feb 17, 2026 · Engine · NJ

This vehicle since early inception of ownership has been brought to the dealer for failure to start, oil consumption and the vehicle stopping suddenly on it's own. There have been 13 service calls and each time the vehicle has been brought to dealer for the problem at hand shortly after that the vehicle was brought back again for the same issue and eventually escalating into other severe problems. The vehicle is unsafe to drive because it suddenly stops without warning, oil is being burned and needs replacement more often than it should. The vehicle recently had to be towed because it stopped and could not be started. The manufacturer claims that there is nothing wrong with this truck. However, this was disputed by a second dealer that examined the vehicle.

Filed Feb 2, 2026 · Engine · FL

Engine losing 60% to 50% of its oil capacity at 5000-6000 miles with 40-50% life left in the vehicles built in maintenance minder. This has been a trend since 25,000 miles. By this math, vehicle would have minimal oil, if any at all, when vehicle says service is due. Creates a high probability for catastrophic failure at speed and increases smoke / condensation from the exhaust in colder weather. Dealer states this is a common problem, manufacture has adjusted their oil consumption standards to make this a "normal" amount despite the risk of failure and injury at speed.

Filed Jan 15, 2026 · Engine, Transmission · CA

Vehicle passed initial inspection and had higher viscosity oil installed. After driving for the past six months I noticed a burning oil smell inside the truck. The smell gets intense at times especially during highway driving. The OW-40 viscosity oil is causing high fumes within the cockpit. Please consider checking this issue out during your added investigation into the L-87 engine failure. I shouldn't have to drive with the windows down but I do. I will have the truck inspected during my next oil change next week.

Filed Dec 26, 2024 · Engine · 21,000 miles · AZ

The contact owns a 2023 GMC Sierra 1500. The contact stated the vehicle was consuming excessive oil consumption. The contact mentioned that the vehicle was consuming oil every 2,000 miles. The vehicle was not taken to a dealer. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and confirmed that the vehicle was consuming oil at a regular timeframe. The manufacturer advised the contact to have an oil consumption test. The failure mileage was 21,000.