2021 Chevrolet Silverado 1500: excessive oil consumption

Filed Oct 2, 2026 · Engine · 37,100 miles · OH

The contact owns a 2021 Chevrolet Silverado 1500. The contact stated that the vehicle experienced excessive oil consumption at 2,600 miles. The vehicle was taken to the dealer, where it was diagnosed with a blown engine. The engine was replaced; however, the contact stated that the replacement engine continued to consume a significant amount of engine oil. The vehicle was taken back to the dealer, where the replacement engine was diagnosed with premature engine failure at 37,100 miles. The contact stated that during the engine failure, there was an abnormal sound coming from the engine and transmission. The manufacturer was notified of the failure. The contact stated that the vehicle had been taken to the dealer every 1,000 miles for oil to be added due to the excessive oil consumption. The dealer confirmed the initial engine failure and the premature failure with the replacement engine. The failure mileage was 37,100.

Filed Jun 14, 2026 · Engine · MN

I bought a 2021 Chevy Silverado 1500 Badlander edition in February of 2025. I love the truck and drive it everywhere. I have brought it in for every oil change when needed. I got my first oil change April of 2025 and had no issues. Then I got my second oil change June of 2025 and both of these were done at the dealership that I purchased the truck from. At the June oil change I asked Jeff Belzers to do an oil consumption test and they said they would not because my vin did not show up in the recall. On July 31 of 2025 I got an engine oil low light on my dash, which I took a picture of. At that time I had to add two quarts of oil. Then in August of 2025 I went in for my oil change at Jeff Belzers again and I told them about adding the two quarts of oil and asked again at that time if they could do an oil consumption test and they told me no again because my vin was not on the recall list. I then got another low engine oil light on September 29, 2025 and at that time I added 2 quarts of oil. In October of 2025 I brought my truck to Maur Chevrolet for an oil change and asked them to check my vin for a recall and they said there were no recalls. Then I brought my truck to Maur Chevrolet in November of 2025 for an oil change and I asked if the vin recall had changed and they said no. At this time I was just checking my oil and adding as needed. I took my truck in for an oil change in January of 2026 and asked about the recall again and no changes. Then after that oil change, I was adding a quart of oil every 600 miles. So when I went in for an oil change in April, I asked for an oil consumption test to be done and the service advisor said yes. This was the first positive step I had in this entire ordeal. At the end of the consumption test, which was on June 12, 2026 it was verified that the engine was burning 3 1/2 quarts of oil every 3,000 miles. At that time I had another oil change done and they told me that they would discuss what would happen on Monday June 15, 2026

Filed May 25, 2026 · Engine · WI

The engine was burning oil, so did a consumption test. The dealer took apart the engine and found the rings for the pistons were leaking and scaring was resulting. This caused me to buy part of a new engine because it was 6days past warranty with only 44,000mi on it. Also, at 18,000mi, a lifter bent and needed that replaced. There are numerous reports for this engine. It should be recalled! I shouldn't have to pay out of pocket for the defaulted error proned engine.

Filed May 22, 2026 · Engine · 12,000 miles · RI

The contact owns a 2021 Chevrolet Silverado. The contact stated that while driving at various speeds, a flashing check engine warning light appeared on the instrument panel. The vehicle was taken to a dealer where the received fault code PO300 which was a general code for a misfire in the engine. The contact brought the vehicle back to the dealer multiple times due to various fault codes; however, the contact was given the same information. The contact then received a "Low Oil, Check Oil", the contact checked the oil and discovered no oil on the engine's dipstick. Due to the failure, the vehicle was towed back to the dealer where they began an oil consumption test. The valves collapsed and the dealer replaced the valve in cylinders 1,3,5, and 7 as well as the spark plugs. Despite the repair, the contact stated that the failure returned almost two months later. The contact continued the oil consumption test and stated that the vehicle was losing 3 quarts of oil each oil change. The manufacturer had been notified of the failure on multiple occasions and had made multiple vehicle buyback requested; the manufacturer denied each buyback request. After his latest phone call with the manufacturer, he was referred to the federal safety agency Hotline to file a complaint. The vehicle was not repaired. The failure mileage was 12,000.

Filed May 2, 2026 · Transmission · WY

Vehicle: 2021 Chevrolet Silverado VIN: [XXX] Mileage at time of incident: Approximately 68,000 miles Date of incident: April 24, 2026 Approximate speed: 75 mph Weather/road conditions: Clear, sunny day Was the vehicle towed? No Did the engine restart? Yes My 2021 Chevrolet Silverado experienced a sudden loss of power and stalled while I was driving on the highway at approximately 75 mph. The weather was clear and sunny, and road conditions were normal. This created a serious safety concern because the vehicle lost power while traveling at highway speed in traffic and could have caused a crash. The vehicle did restart after the incident and was not towed, but it had to be taken in for service after the power loss/stalling event. The dealership later advised that the oil was low on the dipstick and stated they would change the oil and complete a recall/service update. However, I have maintained the vehicle with regular oil changes, and at the time of the incident, the vehicle’s oil life monitor still showed approximately 50% oil life remaining. I do not believe this should be dismissed as a simple lack-of-maintenance issue. I am concerned that the sudden loss of power/stalling may be related to an engine, fuel, oil pressure, electrical, ECM, or recall/service campaign issue. I am also concerned that the vehicle was low on oil despite regular oil maintenance and the oil life monitor still showing about 50%. The vehicle is currently at Tyrell Chevrolet for inspection/service. I have not yet received a clear explanation of the cause of the power loss, whether diagnostic trouble codes were found, whether oil pressure was affected, whether oil consumption was checked, whether any recall or service campaign caused or corrected the issue, or whether the truck is safe to drive. This sudden loss of power while driving at approximately 75 mph presents a serious safety risk and should be investigated. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Apr 16, 2026 · Engine · MN

I am writing because I have a truck with the 6.2L L87 engine and it has been burning oil at every start up and acceleration from stop signs or stop lights, it blows out a blue cloud of smoke. I have asked Jeff Belzers in Lakeville , Mn to look and they did not as my vin did not show up in the recall. I took it to Maur Chevrolet in Inver grove heights, Mn and they told me that my miles were too high and they did not do an oil consumption test. I am burning 2 1/2-3 quarts of oil every 3,000 miles. I called the GM customer service line and they said there is nothing they can do except note it, so if I do get it repaired and pay for it, I could possibly get reimbursed in the future. If there is a known issue with this engine and there being 3 different engine builders, than why is it that my engine doesn't fall under that recall. It has all the symptoms of the engine failure that is specified in the recall? And it started about 6 months ago. Thank you Sincerely, [XXX] P.S. I have 136,000 miles and the special coverage warranty runs out at 10 years or 150,000 miles. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jan 30, 2026 · Engine · AR

At 46000 miles the motor was replaced because of an internal oil consumption issue after the motor was replaced at 1500 miles the motor locked up while traveling down the road they rebuilt this motor. I went to go pick it up. Drove it 20 miles and oil was blowing out the rear main seal. after this, I sold the truck back to Gwatney Chevrolet and purchased a 2024 model with a 6.2 L I have not had any problems yet.

Filed Nov 10, 2025 · Engine · NC

GM 6.2 engine recently tested for the national recall regarding valve and lifter issues. Recall was cleared as ok, but they found burnt cylinders in multiple areas within the engines. Several issues are still occurring with this engine, and I think most are related to the recall effort. 1. Engine will use oil at an abnormal pace when towing anything heavy. Recently used an additional 2 quarts of oil when towing a trailer that weighed 10, 000 pounds over 1600 miles. 2. Recently engine seemed to lose compression at a stop light and turned off. This happened an additional 5 times until I could get the truck off the road and into a safe place. The engine would immediately start and then die within 5-10 seconds. Towed to a Chevrolet dealership and the service manager tried to move it into the bay for diagnostic testing. started and stopped 4 additional times as they attempted to drive if 100 feet into the service bay. Towed to my hometown dealer that afternoon for diagnostics testing. The next morning when they started the truck it cranked fine and has been running since (7 days). No lights appeared on the dash during the breakdown or warnings appeared in their testing I have spoken to several other Chevrolet owners about the 6.2 engine issues and what was occurring with my truck They also had seen an increase in oil usage when towing heavy. I believe that your investigation needs to delve further into not only issues with the lifter / rods but also into other mechanical concerns that are oil dependent and related such as burnt cylinders. This last issue occurred on October 27, 2025.

Filed Jul 25, 2025 · Engine · KY

check engine light came on at 55000 mile went to servige ststion they check oil 4 quart lowe motor leaking o il . been to dealer 5 time in last 2 0r 3 month . now engine making peaking noise at 6400 mile . dealer say warrenty out have to pay for repair . something wrong clinder head they guess dont now for shore will have to tare into motor this truck was under warrenty when i first took it for repairs now they want me to pay for the repairs .

Filed May 23, 2025 · Engine · IL

At 38,000 miles: While driving, the engine began knocking, vibrating and shut off. The check engine light came on and the vehicle could not be restarted. It was towed to the dealer who diagnosed it with lifter failure. It was still under the powertrain warranty at this time. Several lifters were replaced as well as other engine parts and I was given the truck back after a few weeks. A week later, truck would not start. After looking under the hood I noticed most of the hoses and wires were not clipped off, causing them to just rattle and move around. Upon further investigation, I found that the wire to the starter was loose and had to be wiggled to get the truck to start. This wire should have been secured to the vehicle with the provided clips, but it was not and came loose because of it. I also found a random loose bolt lying in a void space under the hood near the windshield. I took the truck back to the dealership that replaced the lifters and explained my frustration with the condition my truck was put back together after tearing into the engine. I also showed them the random bolt I found. Their manager assured me that they would go through the engine compartment and make sure that the wires and cables were properly secured to the side like it should have been after the initial engine work. I never received an explanation of where the random bolt came from. After this engine work, my truck never seemed to drive the same. It began use more oil and the fuel MPG decreased. I reported to the dealer on the oil consumption and they had me start an oil consumption test. 600 miles after the oil change my engine light came on, truck began to run rough and make a loud engine rattle noise. I took it back to the dealer for a diagnosis. They called back and said that there was a lot of metal in my oil when they drained it. They contacted GM and are scheduled to open the engine up to find out if it can be fixed or needs a new engine. Currently at 52000 miles

Filed May 1, 2025 · Engine · GA

My engine is out due to the piston rings failing and is at a dealership waiting for a new engine. The engine for this vehicle is on national back order with no ETA in sight. Out of nowhere the low oil light came on and I had to stop immediatley to check it as to make sure nothing happened while I was driving down the road. The dealership that has it has confirmed that the issue was due to the pistons. This vehilce was purchased brand new and has had perfect maintenance performed on it since day one. The dealership has inspected the vehicle. The low oil light first came on in February. I took it straight to a place to have them check it and change the oil again just until I could get it to the dealership a few days later. I was advised to have an oil consumption test done. On the 3rd time, which would have been around 3000 miles, it had already consumed more than a quart of oil. They did a borescope and confirmed that the pistons are bad and because of this the inside of the engine is scored. Now I need a new engine on a vehicle that I've taken perfect care of. I believe that this vehicle should be included in the GM recall with the other 6.2 engines as this is also a 6.2 engine in the same year range. I have included the paperwork from the dealership and my carfax showing maintenance.

Filed Apr 8, 2025 · Engine · GA

I purchased this vehicle brand new is 2021 with the 6.2 liter engine. I have had all the regular maintenance performed as scheduled with 90% being done at a Chevrolet dealership. My truck has around 90,000 miles on it and now the engine is out. It started with showing low oil at 50% oil life left. When I took it to have it checked, it was 3 quarts low on oil. I did another oil change and was told I had to start an oil consumption test in order for them to review the issue. I had it checked every 1000 miles. The first and second check was fine. The third check was one quart low. They took it in and found that the spark plugs were oil fowled. Upon further investigation, they found that the cylinder walls were scored and had oil bypass in the cylinders. I have done everything right with this truck. Took care of it in all the ways I was supposed to. There is no reason what so ever for the engine to have gone out at 90,000 miles. There has to be more to this. I have looked it up and other people are having the same issue with the same engine. Why is nothing being done about this?