2019 GMC Sierra 1500 Engine

The contact owns a 2019 GMC Sierra 1500. The contact stated that the vehicle made an abnormal rattling sound while idling. Additionally, while driving at 45 MPH, the message "Reduced Power" was displayed, the check engine warning light illuminated, and the vehicle stalled. The contact was able to coast to the shoulder of the roadway. The vehicle failed to restart and was towed to the dealer, where it was diagnosed and determined that there was no compression in the engine. The dealer determined that the engine needed to be replaced. The dealer advised the contact that the repair was not covered because the VIN was not under recall. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was approximately 126,000.

While driving vehicle at highway speeds the vehicle shut down without any warning

The service engine light came on while driving on the highway. We took it to a GMC dealership and they scanned to determine a short in the oil pressure sensor. This was replaced then during the final check they found metal in the oil. The warranty company made them tear the engine apart where they found multiple area where the metal was worn down including the gaskets, rings, and cylinders. The warranty company continues to fight us to cover the whole invoice.

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving 75 MPH, the vehicle failed to accelerate as intended while depressing the accelerator pedal. There was an abnormal sound coming from the engine. No warning lights were illuminated. The contact stated that on a separate occasion, while driving at an undisclosed speed, blue and white smoke was coming from under the hood. The contact pulled over to the side of the road, and the smoke ceased. The contact opened the hood and inspected the engine. The contact restarted the vehicle, and the smoke started coming from under the hood again. The messages "Parking Brake Service Required”, “Reduced Steering Assist”, “Proceed with Caution" were displayed, and the check engine warning light was illuminated. The contact stated that while driving and coming to a stop, the engine jerked abnormally. The vehicle was taken to an independent mechanic, where it was diagnosed with oil intrusion into the spark plugs with a misfire in cylinder #6, and the piston rings were fractured, and there were scratches on the cylinder walls. The vehicle was not repaired. The contact stated that the failure persisted. The manufacturer was made aware of the issue. The contact was referred to the dealer for assistance. However, the contact was concerned about the damage to the engine and feared driving the vehicle. The vehicle was not taken to the dealer. The failure mileage was 71,799.

After a really bad cold snap noticed oil spots on my driveway, after further inspection noticed the oil cooler lines were leaking from the crimps. Got in contact with GM because there was a customer satisfaction program for my year model- N212326940- they told me it did not apply to my truck but it is a know issue, and now I’m having to come out of pocket for it.

Luckily, truck was sitting in idle waiting on my wife and daughter to leave the store so we could go home. Engine began to run rough, and then died. Would not restart. Had this happened just a few moments later while in traffic, it could have been catastrophic for our family. GM dealership said the engine was nearly locked up and needed a new long block and several other ancillary parts. So far, we have no internal pictures and nothing was harmed externally.

Complete engine shutdown after multiple issues of truck using 5 quarts of oil in-between oil changes. Engine was rebuilt at dealer at out of pocket cost over 10000

There is a Service Bulletin on the Engine Oil Cooler line failure. It leaks or becomes detached form the crimp joint. Mine is leaking from the crimp joint and GMC says my VIN is not covered under this bulletin. N192220080 if this is a known issue on these vehicles why am I having to cover the costs for replacing a known faulty part. GMC said I could bring it in and have them perform the repair at my cost. The nearest service department is 100 miles away. I have it at a local mechanic that says it will cost anywhere from $1300 to $1500 to perform the repair.

Catastrophic engine failure. Engine failed while driving and lost all oil pressure. Nearly cause accident

5.3L V8 L84 Engine, 101,300 2nd owner Slowed down for traffic and was accelerating back to 80 when sudden loss of engine power coinciding with cylinder failure happened. Dealership determined lifter was collapsed. Lifter 1 failure at interstate speeds. Collapsed lifter caused damage to camshaft required both components to be replaced.

While pulling a small trailer to go hunting, the engine just lost all power while merging onto the freeway. I had to pull over to the shoulder in high speed traffic because the truck had no power and had an odd clanking sound. When I took it to the dealer for repair, they stated that the lifter failed and also damaged the cam. This required a full engine rebuild. When the dealer went to test drive the truck with the new parts, ANOTHER lifter failed and also affected the cam again which required another rebuild.

I had to get the cam and lifters replaced in the engine.

While driving my 2019 GMC Sierra with approximately 119,000 miles the engine suddenly made a loud bang, started shaking violently, backfiring, and missing out. Took it to dealer. They diagnosed the problem as a rod failure with camshaft damage. Quoted repair cost $12,000. After repair, they were doing a 25 mile test drive before returning the truck to me. After only 20 miles, the engine completely failed. Now it needs an entire new engine. I am waiting for them to reply what the cost is. The truck was maintained exactly as required in the owners manual at General Motors dealers

Engine loss of power many different engine code took it to the dealership. Now they say lifters, rockers are loose and worn,broken,the cylinder 5 misfire, engine needs rebuild at 88,000 miles. Dealer wants over ten thousand dollars to take apart and repair

Friday night coming home. While entering my driveway. The check engine light came on. The engine sounded really bad. Rough idling. Saturday morning. Took it to a mechanic shop. While on my way to the shop, the truck had loss of power. The first mechanic shop told me that the truck was having engine failure. Was not sure at the time but the L 87 is known for having lifters and bearing failure. Monday the truck was taken to the dealership Novak motors. For extended warranty, repair or possible engine replacement. It has been two weeks. Have not heard anything yet. But the timing of the incident was good. Because the engine failed when I was pulling in to my driveway.

On January 15, 2026, my wife was driving our 2019 GMC 1500 Sierra Denali and the lights on the dash came on with the truck losing power. I made to my wife later in the day and was able to drive the truck to the dealership only achieving 15mph for about 5 miles. The Mike Bell Chevrolet Dealership in Carrolton GA stated that my engine was knocking and needed to be replaced. I took my truck the John Thornton Buick GMC dealership on January 22 to get a second opinion and they stated the exact same thing stating the engine needs to be replaced. The dealership is stating the remanufactured replacement issue is over $10,900. My truck has over 271,000 miles.

Vehicle is having loss of oil issues.

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at various speeds, there was an abnormally loud clamoring sound coming from the engine. There was no warning light illuminated. The vehicle was taken to a dealer, and the mechanic informed the contact that the engine might fail soon. The contact was able to continue driving the vehicle, but the contact was advised to bring the vehicle back if the failure worsened. The following day, the contact stated that the front of the vehicle started shaking with several unknown warning lights illuminated on the instrument panel. The vehicle was taken back to the dealer and remained with the dealer undiagnosed. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 71,000.

I have the L87- 6.2 V8 and my crankshaft bearings burned up at highway speeds and the truck shut down. The is a massive recall on this engine for this reason but does not include the 2019 model and it most definitely should. The issue started in 2019 (not 2021).

Engine started knocking so took to the GMC dealer they said the engine needs to be replaced.

ENGINE COOLER LINE DETACHED FROM CRIMP CAUSING ENGINE TO DRAIN OIL RAPIDLY AND ENGINE SEIZED. THE OIL PRESSURE WARNING LIGHT CAME ON, AND THE TRUCK WAS IMMEDIATELY SHUT DOWN (WITHIN 10 SECONDS). WE WERE PUT AT RISK BECAUSE WE TRIED TO COAST OUT OF TRAFFIC AND PARK IT ON A SHOULDER TO PREVENT BEING STRUCK BY ONCOMING TRAFFIC. TRUCK WAS TOWED TO DEALER WHERE WE WERE TOLD THE ENGINE WAS SEIZED AND WE WOULD HAVE TO PAY FOR A NEW ENGINE. DIGGING INTO THIS FURTHER, GM HAD PUT A SERVICE BULLETIN FOR THIS EXACT ISSUE OUT ON THIS YEAR OF TRUCK. (N212326940-01). I BROUGHT THIS UP TO THE DEALER AND THEY TOLD ME THAT MY SPECIFIC TRUCK WASN'T INCLUDED IN THE RECALL AND WOULDN'T BE COVERED.

Manifold. I use my truck daily for my job. I was coming home every night, tired with headaches not knowing why I was being poisoned. The manifold was leaking in the cab of the vehicle. This is a major safety issue when it’s poisoning people.

6.2L engine lifters were replaced in 05/24. Complete engine failure in 09/25. Engine replaced with remanufactured engine. Fuel pump fail while driving on highway. Engine shutoff completely while driving 70mph. Prior to shut off engine struggled going over a bridge on I95 at 70 mph. Fuel pump failure happened 11/25 after ~900 miles on new engine. All service, maintenance and repairs completed by GMC dealership.

I have a 6.2 engine that failed just recently had to get it rebuilt after hearing all the recalls for the other 612’s also have a 2023 GMC Denali Yukon also what does 6.2 on the recall

ECM COMPLETELY FAILED DURING DRIVE NO PREVIOUS WARNINGS