2022 Chevrolet Suburban: excessive oil consumption

Filed Aug 31, 2026 · Engine · IN

I am submitting a safety complaint regarding our 2022 Chevrolet Suburban equipped with the 6.2L L87 engine. The vehicle is subject to GM Product Safety Recall N252494000 / the federal safety agency Recall 25V‑274. Our Suburban underwent GM's required recall inspection, including the Picoscope inspection. The engine passed the inspection and the engine oil type was changed in accordance with GM's recall procedure. Since passing that recall inspection, we have experienced the following issues: On XXX, at approximately 40,527 miles, while we were in [XXX], the vehicle displayed a reduced-acceleration warning and check-engine light and experienced significant acceleration problems and loss of reverse. We took the vehicle to Essenlohr Motors, a Chevrolet dealer in [XXX]. The dealer diagnosed a P0700 condition/control solenoid stuck off and repaired the transmission valve body under GM warranty. I understand this incident was diagnosed as a transmission issue, and I am including it as part of the vehicle's recent history rather than asserting that it was caused by the L87 engine defect. The dealer's repair order documents both the check-engine condition and our report of the reduced-acceleration warning. On XXX, after we had returned home to [XXX] from our trip to [XXX], the Suburban had 41,798 miles on it. We drove approximately 2 miles from home when a “Low Engine Oil–Add Oil” warning appeared. We immediately returned home and parked the vehicle. After allowing it to sit for approximately 15 minutes, we checked the engine oil and there was no oil registering on the dipstick. We saw no evidence of an external oil leak on the garage floor or underneath the vehicle. Rather than continuing to drive it, we had the Suburban towed to Wiers Chevrolet in [XXX]. The dealer confirmed that the engine was approx. two quarts low on oil and indicated that there was no apparent leaks. They performed an oil change and started a 6,000 mile oil consumption test. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Feb 20, 2026 · Engine, Fuel system · IA

My vehicle was subject to a GM recall involving inspection of the 6.2L engine. The recall inspection was completed by an authorized GM dealership at 58,581 miles. The vehicle was cleared as passing the recall criteria and returned to me. Within fewer than 10 miles after leaving the dealership following the recall inspection, at approximately 58,590 miles, the vehicle experienced a sudden loss of propulsion while traveling at highway speed (approximately 65 mph) on a divided U.S. highway while ascending an incline. The vehicle shifted into neutral and lost engine power without warning. Steering and braking remained functional, but the vehicle lost forward motive power in the left lane of traffic. Attempts to restart the engine resulted in a loud mechanical thud, and the engine would not restart. The vehicle was towed to the dealership. The engine is now being replaced. Prior to this incident, the vehicle had previously undergone an oil consumption test related to engine concerns before the recall campaign. This failure occurred shortly after the vehicle was inspected and cleared under the recall procedure. I am reporting this due to the sudden loss of propulsion at highway speed following recall inspection and the subsequent need for complete engine replacement.

Filed Jul 8, 2025 · Engine · 3,000 miles · CO

The contact owns a 2020 Chevrolet Suburban. The contact received notification of the federal safety agency Campaign Number: 25V274000 (Engine and Engine Cooling). The contact stated that on several occasions while checking the oil level, there was no oil on the "dip stick". The contact stated that the engine consumed 2-3 quarts of oil approximately 4,000 miles. Additionally, the contact stated that while driving on several occasions at various speeds, the low oil warning light illuminated. The vehicle was taken to a dealer where it was diagnosed that the piston and piston ring were damaged due to excessive wear and sticking. The vehicle was repaired but the failure persisted. The vehicle was taken to the same dealer where it diagnosed that the cylinder head had failed and needed to be replaced. The vehicle was repaired but the failure persisted. The vehicle was taken back to the same dealer where the failure was not replicated. The manufacturer was not notified of the failure. The failure mileage was approximately 3,000.

Filed Feb 13, 2025 · Engine, Transmission · OH

The “add engine oil” light kept coming on and I initially thought it was because they forgot to reset it after my oil change because my car wasn’t reading it was due for one. I came to find out that my car is likely burning excess oil, according to the dealership, since all of the oil was gone. GM says that it’s normal to burn oil and as long as it’s up to 2 quarts between oil changes it’s fine. The dealership recommended that I get oil consumption test and sometimes it burned more oil than normal and other times it did not. We had to go every 1,000 miles which was an issue because it’s our main vehicle for family transportation and sometimes I would have to go under 1,000 miles because we needed it for a longer trip and would be over if waited until we got back. Also, my engine fan was making a very loud noise that would run for a while after my car was turned off and I was told multiple times it was fine until one time they checked it and it was indeed an engine malfunction and my engine would overheat when I went above a certain speed. The first fix wasn’t right and had to go back. I wasn’t burning enough oil to warrant GM to do anything.

Filed Nov 13, 2023 · Engine · SC

at some point,we noticed that every time we crank it up, the engine would sounding weird, like it was low on engine oil, we checked the engine oil, and it was no less then 2 quarts low, that was realy weird, because we change the oil as needed and we definitly make sure that we add the amount recomended by GM, also this past weekend, it was rainy, we were out doing some shopping and on the way back home the windshield wipers stoped working, we could not take the vehicle out for the rest of the weekend until it stopped raining.