2019 GMC SIERRA 1500 Complaints

Engine Failure. 1. The lifter in cylinder 5 failed (dropped) this prompted me to bring the truck in initially. 2. Upon further inspection all the cam bearings were scored and out of spec. Waited 4 months for an engine replacement from GM. Eventually I cut my losses and sent the block to a machine shop. This was all paid out of pocket. Truck had 74,000 miles on it.

Sudden lost of power while driving. I was driving on the i95 and out of nowhere the vehicle shut off in the middle of the highway. It was a scary moment because I could of been in serious accident. All the engine signs were displayed on the dashboard.

The engine started making ticking sounds, then the check engine light came on on and it began running very rough. GMC dealer replaced camshaft, all 16 lifters and guides and one bent push rod. The repair (not including transportation - I had to leave in GallupNM when I was enroute to Minnesota) cost was $7,832.81. The vehicle has 93,000 miles

At approximately 61,500 miles, the engine malfunctioned while cruising on a 4-lane highway at 45 MPH. The problem was diagnosed by an independent mechanic as a crankshaft rod bearing failure. This failure happened despite all recommended maintenance being performed with specified parts. This failure caused a safety concern as the vehicle was in motion at the time of the failure, increasing the potential for a collision due to the vehicle becoming disabled on a highway. The engine was replaced at a cost of approximately $13,500 parts and labor. Vehicle was out of service for two months due to a waiting list on replacement L87 engines.

Defective out cool oil return line on v8 6.2L engine. Causing the truck to lose oil immediately due to being under pressure. Caused complete engine failure and required a new engine. That took 4-5 months to complete. Located in park city Utah a cold weather location. Not part of the 2019 recall for the same failure that gmc did in Canada and Alaska for a defective cool oil return line. When I called gmc to talk about it they referenced my vin and said it had no open issues and that they couldn’t talk about it.

While towing a trailer on Highway 77 in northern Wisconsin, my 2019 GMC Sierra 1500 experienced a sudden engine failure. The dashboard lit up with alerts for the engine, transmission, ABS, and traction control. I safely pulled over in a 55 mph zone with narrow shoulders and heavy truck traffic due to nearby road construction. The truck lost all power, and I had to block the driving lane to transfer the trailer to another vehicle, creating a hazardous situation. There were no prior warnings or issues. The truck had regular service at independent shops, and I had checked and topped off the oil that morning. Lahti Towing & Service recovered the vehicle, changed the oil (no metal shavings), and replaced the camshaft sensor, but the truck still wouldn’t start. They then towed it to Rhinelander GMC, where a broken timing chain was diagnosed, requiring a full engine replacement. The vehicle is currently at Rhinelander GMC and available for inspection. I have photos of the dashboard alerts and data from the GM app documenting the incident.

My engine has a loud knocking/ticking noise. I have had one mechanic look at it. He has me taking my truck to a dealership this week. He believes the known issue with GMC's 6.2 engine is taking place in the engine in my 2019. From a verbal conversation with the dealership, they believe the same. I was advised to complete this form ASAP.

Pulled up to a stop sign, the engine shutoff and would not restart. Had the vehicle towed to the dealership. Received a call that the engine will need to be replaced. The code is a P0016. Same code as the other 6.2 L87 GM motors, but is not currently under the recall. They found no metal in the oil pan and the engine only has compression on cylinders 2 & 8. Make no mechanical sense. Before this, I had no engine lights, I had no oil burning, I had no smell of oil and the truck ran fine. No loss of power or any other issues.

This truck needs 2500.00 in work to replace Electrical Harness after months of problems and evaporating leaks.

The contact owns a 2019 GMC Sierra 1500. The contact stated that occasionally, while driving approximately 57 MPH, the vehicle violently shuddered, causing the steering wheel to become difficult to turn in either direction. No warning light was illuminated. The vehicle was taken to a local dealer, where it was determined that the driver’s and passenger’s side front tires needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The vehicle was taken back to the same local dealer where it was diagnosed; however, the cause of the failure was not yet determined. The manufacturer was made aware of the failure. The failure mileage was approximately 13,000.