general problems of the 2019 GMC Sierra 1500 - part 2

I was driving in a city at 30 miles per hour no acceleration and no load. I lost oil pressure, dumped all the oil out of the crankcase and then the engine locked up. I had it towed to my mechanic shop that I have work done. The technician diagnosed it as a failed oil cooler pressure supply line. Where the solid steel line crimps to a rubber oil hose, that connection had not been applied enough pressure and the rubber line became separated from the steel line.

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.

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.

We were driving down a farm to market road at about 50 mph pulling an empty cattle trailer when we had a severe power loss, lots of dash lights and warnings. I noticed white smoke coming from the tail pipe. We limped it back to the house and unhooked the trailer and idled it into the Chevrolet dealership in portland TX. The dealership just called and they said the #5 cylinder failed, there is metal in the oil and it will need an engine replacement at a cost of over $11,000. 00. The truck is a 2019 and has just over 54,000 miles on it. No engine should fail at 54,000 miles and no company should sell one that does. Pulling a loaded trailer at highway speeds with a total engine failure could easily cause death to passengers and livestock. 12122025.

Just had my 2019 GMC Sierra 1500 denali engine fail. My truck has 75k miles oil changed regularly no codes, issues or dash lights. Recently had it at GMC I folsom California for a rear window replacement. Full inspection with no issues and nothing found wrong. Sunday 12/7 with my girlfriend and son in the truck about to get on the freeway felt a weird shift as I got on the freeway on-ramp. As I went to accelerate I had my traction control lights come on, lost power, and flashing check engine lights limped the truck off the side of the freeway and exited to a gas station. My truck wasn’t leaking anything and oil pressure was good but it sounds like popcorn was being made in my engine when it was on. Had my truck towed to folsom GMC and yesterday 12/8 got a call I need a new engine. Called gm corporate to talk to them and opened a claim. GMC dealership got an initial help with 15% of the bill telling me I would need to pay $13,315. Talked to the service advisor and they put in a request for help from gm. Today at 9:00 a. M. They offered 50% coverage and I was able to get a little more but it still has me paying $7,500 and it will be 2-3 weeks to get the repair done. The dealership also will be getting me a loaner vehicle. This dealership has not been great but with this they are trying and doing a lot. However 75k on a truck that does not haul or have heavy use and is 7 years old with no prior issues is crazy. I was told cylinder 8 showed a misfire. Once they opened it up there was damage to the pushrods, valves and lifters with significant metal throughout the motor. I’m still waiting for corporate GMC to get back to me and hoping they will help or offer more money off as this is still a very large bill for a single father of 2 around the holidays. I bought the truck used with about 32k on it in 2022 and have had no mechanical issues or codes related to the motor or transmission.

Ecm completely failed during drive no previous warnings.

Engine failure on 12/1/2025 16,253 miles and 591. 9 hours on vehicle. Vehicle has the 6. 2l engine. Towed to dealership.

Engine malfunction, had dealer look at truck and they said I needed a new engine, check engine light came on and a knocking noise appeared suddenly. Reading about 2021+ sierra with 6. 2 engine that has a recall with the same problem as mine. Wondering why that recall wasn’t extended to my truck as well.

Engine oil cooler lines leaking from crimp joints. "oil pressure low turn vehicle off" display showed on dashboard. Oil is present all over the bottom of my truck as well as a trail along the road and the parking lot where I parked it. I have not brought it to the dealership yet. There has been a customer service program notice about this issue, I got my truck after the issue was sent out so I did not get the letter or supposedly this truck is not part of it even thought it is the exact issue. Customer service program number n212326940.

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving approximately 60 mph, the vehicle started shuddering. The check engine and stabilizer warning lights were occasionally illuminated. The contact pulled over into a nearby gas station, and the vehicle was later towed to a local dealer. The vehicle remained at the local dealer, where it was diagnosed and determined that the engine needed to be replaced. The vehicle was not repaired due to the cost. The local dealer informed the contact that the failure was related to NHTSA campaign: 25v274000 (engine and engine cooling); however, the VIN was not included. The manufacturer was notified of the failure and referred the contact to the NHTSA hotline for assistance. The failure mileage was approximately 49,000.

On November 25th, 2025 I had my wife, kids and baby grandson in my truck driving approx 50 mph when the trailer brake light appeared on my dash. I thought that was strange since I was not pulling a trailer. Shortly after my truck felt like it was going to stall and complete loss of power. I pulled into a turn lane and coasted into a gas station parking lot. I put the truck into park and turned the motor off and then restarted it. The truck was running extremely poor and sounded like it had rocks loose in the motor. I had it towed into an automotive repair facility I have always used and they told me my engine was gone and had to be replaced. I had been told by an oil change company a few weeks before that this engine was under a recall. I checked into it but this model year was not included. I did further research and founded out that this model year was under review. Something needs to be done as I was lucky this was not a busy highway or this could have ended worse.

Less then 47 000 miles on truck, used for only city driving, no off road driving or rigorous travel. - engine malfunction and could have had catastrophic failure while traveling causing injury to myself or others. -car is inoperable, dealer recommend not to drive it due to safety concerns. -I have metal shavings in the oil, misfires, and a p0011 code. These match the known gm lifter/camshaft failure pattern. Vehicle started skipping check engine light turned on for cam shaft interrupter magnet. Gm has open recall for 2021-2025 engine however 2019 vehicle is still under investigation.

Informant system tells me that the engine oil is low every time right at about 1,000 miles after I change the oil. There have been times where the engine has hesitated to accelerate shortly after receiving the message. I've taken truck to be serviced with no oil leaks found. I purchased this truck with 21,000 miles on it, and it's been doing this ever since I've had it.

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at various speeds, the vehicle hesitated and failed to properly accelerate while the accelerator pedal was depressed. No warning light was illuminated. In addition, the contact was aware of excessive oil consumption and the vehicle was previously taken to a local dealer. An appointment with the same local dealer was scheduled to inspect the vehicle. The vehicle was not yet repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 87,000.

The starter started dragging about a year ago and on November 12 the 2019 GMC truck would not start. We had it towed to harper GMC in minden, la. They told us the motor was locked up. This vehicle has a little over 40,000 miles on it. Has always been parked in a carport out of the weather and still looks brand new. I see where 2021 GMC trucks have a recall on the motor and this is the same problem with our 2019.

It is the same issue with 2021-2024 6. 2l engines that have already been recalled. I have to replace lifters and cam because of the issue.

While traveling in high-speed traffic, the vehicle experienced a sudden and catastrophic mechanical engine failure without any prior warning lamps, messages, or symptoms. The failure manifest as a loud, rhythmic ticking and knocking noise immediately followed by a sudden loss of propulsion and severe engine shuddering. Safety risk: the loss of power occurred in active traffic, creating an immediate crash hazard. Because the engine could no longer maintain speed, I experienced multiple near-miss collisions while attempting to navigate the vehicle to safety. This "limp mode" state placed myself and other motorists at extreme risk of a rear-end or side-impact collision. Component & inspection: the failed component is the engine (6. 2l l87 v8), specifically believed to be a failed lifter or bearing within the dynamic fuel management system. The vehicle and its engine are currently available for inspection. Confirmation: the problem has been confirmed by a certified dealership service center. Diagnostic codes include p0300 (random misfire) and p0016. The dealership identified the symptoms as consistent with internal mechanical failure.

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at 25 mph and making a turn, the vehicle lost motive power. There were several unknown warning lights illuminated after the failure. Upon investigation, the failure was related to NHTSA campaign number: 25v274000 (engine and engine cooling). The vehicle was towed to an independent mechanic, where it was diagnosed with lifter failure and camshaft damage. The vehicle was repaired. The local dealer was not contacted. The manufacturer was contacted and opened a case, and referred the contact to the local dealer for assistance. The failure mileage was approximately 86,960.

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.

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.

Complete engine failure. I was driving approximately 55 miles an hour, then all of a sudden the cruise control automatically shut off and a series of alarms are triggered. When pressing the accelerator pedal, the engine vibrated excessively in cleary indicated catastrophic engine failure. I was lucky enough to make it to the nearby dealer who confirmed a complete engine failure. I ended up buying a new vehicle that day to avoid being stranded.

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

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.

Around June 2025 under normal driving my truck displayed engine oil low which I promptly checked the oil to find that it was in range. The light later went off but I still brought it to the dealership to which they could find no issues. From there over the next month or so the truck developed a low end popping sound on start up and at my next oil change at the dealership in August of 25 I asked them to listen to see if they heard it and could recommend a course of action. They reported not hearing anything. On October 19th I had my family in the truck with me and during normal acceleration the engine had a loud pop sound and lost power. Every warning light came on and I pulled over promptly when safe. I had it towed to the dealership and their initial diagnosis was a failure on cylinder 4 with a suspected failure of either the cam shaft or lifter. Given the poor design of the lifter I didn’t want to go back with the oem lifter so I had it towed to an aftermarket shop. It is there now and they are in the process of tearing down the engine. After watching a video on youtube I fear my truck is part of the connecting rod bearing failure under pe25-001. My understanding is there is an official investigation into the trucks outside the initial recall. I wanted to submit this for your review as the truck only had 74,000 miles. Freeman GMC in grapevine, TX has performed all the maintenance and should have documentation.

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, several unknown warning lights illuminated, and the engine seized. The vehicle was taken to an independent mechanic, where it was diagnosed with a misfire in cylinder #3 and engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact referenced an unknown recall with a similar failure; however, the VIN was not associated. The manufacturer was not made aware of the failure. The failure mileage was approximately 101,000.

Main bearing failure.

Truck cut out going across the road almost got hit due to the vehicle stalling then about a mile down the road the check engine light came on parked it took it to my mechanic and after the incident it was throwing a cylinder misfire code. Cylinder one when the mechanic got in there was completely shot and I had to have a new motor. No warning no lights could have potentially caused a major accident.

Engine problems (oil, crankshaft, loss of propulsion) similar to that of recalls in 2021-2024 models.

Was driving at about 55 mph and vehicle popped up with warning and said shift into neutral to restart. I tried to and all power turned off. This was at around 8 p. M. So no headlights or anything. Luckily got it stopped without hitting anything. Had vehicle towed and motor was locked up. Spun bearing they said. Same issue apparently as other 6. 2 liter engines have been having.

Engine developed a clicking sound. Took to dealership and was diagnosed with rod and bearing damage requiring an engine replacement. Was fortunate to have inspected before engine failure while driving. No warning before the failure. I believe there is a known issue with the 6. 2 l engines.

The engine lost all power while driving down the road and code says p0016 truck is now at a GMC service station being torn down.

As I was turning left from a county road to a highway my truck died on me. I was able to push it out of the road with the help of two other motorist. This is the second time in 4 months were my truck broke down due to engine failure. I had the motor repaired the first week in June 2025 for a similar instance. My truck is at the dealership right now awaiting repair because gm will not recognize that my 2019 6. 2 l87 engine has the same known defects as other 2019 6. 2 l87. This is a safety issue which gm refuses to acknowledge on my vehicle.

The contact owns a 2019 GMC Sierra 1500. The contact stated that the vehicle was taken to the dealer for an oil change service. The contact stated that while in the process of picking up the vehicle, the dealer informed the contact that the vehicle had failed to start. The dealer determined that the engine needed to be replaced and provided an estimate for the repair. The vehicle was not repaired due to the cost. The manufacturer was not notified of the failure and informed the contact that the VIN was not included in a recall. The contact was referred to the NHTSA hotline for assistance. The contact related the failure to NHTSA action number: pe25001(engine, engine and engine cooling). The failure mileage was approximately 115,000.

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.

Engine suddenly lost power at highway speed. Truck was still running so I was able to get off the highway. Engine failure was caused by bent lifter. Lifter failure also caused damage to the camshaft. Vehicle was at dealership for significant time with a large repair bill that gm is not willing to cover due to the vehicle being 5 weeks out of warranty.