general problems of the 2019 GMC Sierra 1500 - part 1

Lifter failure and camshaft failure twice.

Dangerous lost of propulsion in traffic while my minor daughter was in the vehicle, I was driving my truck that has a 6. 2 engine GMC that is currently being reviewed engineering analysis ea25-007, I bought engine back in October 2025 and incident happen early March 2026 around 10,000 miles.

Engine shut off while driving and steering wheel wouldn’t let me turn and I drove up on a curb into someone’s yard , there should be a recall on these trucks with the 6. 2l in the year 2019, this is very dangerous I could of injured myself on injured someone else. This needs to be addressed!!.

While driving down the highway experienced a partial loss of engine power causing jerky/rough operation, harsh shifting, and unpredictable behavior. Was told by the dealer service manager that it was likely a misfire in one of the cylinders. After diagnostics and servicing that included changing spark plugs, wires, and a full engine service it was later confirmed to most likely be due to a stuck lifter and will require a complete engine replacement. I have subsequently learned that this is a common problem with this l87 engine and may be an early indicator of failing crank bearings associated with a recall for later model years of my same vehicle. Seems to me that recall ought to be expanded to include earlier models with l87 engines.

Driving down the interstate 35 in tarrant county, texas. Engine locked up. Towed to dealership. Dealership determined that engine is locked up. Had dealership verify oil level was okay and they confirmed that it was. Oil had been services two weeks ago. Engine is a 6. 2 l but not the l87 block. Milage on the vehicle is 149,752.

The 2019 GMC sierra at4 with the 6. 2l v8 engine began making a rattling or tapping noise at 45 mph. No warning lights appeared on the dashboard. When starting the engine and idling, a similar noise can be heard from the engine. I bought the vehicle used from a dealership one month ago, with 80,000 miles, and the second issue is the complete failure of the blind spot warning system on both mirrors. It was a one-owner vehicle with a clean carfax. I am scheduled to take the vehicle to the dealership's service department for a full inspection.

This truck is equipped with the 6. 2l l87 and the motor seized up and shut off with no dash light warning and I stalled and rolled over a curb! this is very dangerous and now I have to pay 10k + out of pocket for an engine replacement! truck has low miles this is unacceptable and it needs to be in the recall , this is dangerous and it hurts people !.

Engine light came on, along with 'service esc' and 'service parking brake' I drove it to my local GMC and it continued smoking and they told me that if I drove it like that it could blow up the engine. They mentioned a recall on these types of trucks but they said the warranty on my vehicle had expired at 60000 miles. Yes, I took it to rogers GMC in hermiston and the diagnostic is, "mechanical: valve lifters - remove and replace" totaling repairs to about $7000 before this nothing was wrong, I drove it to work everyday and one evening when I turned it on the dashboard lit up and it started smoking.

Engine oil pump solenoid. Diagnostic code p06dd.

The dfm program in the engine caused the lifters to fail and bend a pushrod which in turn scared the cam shaft. There were no signs leading up to this. It caused the traction control and brake systems to be compromised. I took vehicle into a gm dealer and had it diagnosed.

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.

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 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.

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.

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at 45 mph, the vehicle stopped unintendedly. The message “low oil pressure - shutoff engine” was displayed. The contact stated that the vehicle was towed to an independent mechanic, where it was determined that the failure was due to rod bearing failure. The local dealer was contacted and confirmed that there was no warranty coverage on the vehicle. The vehicle was not diagnosed or repaired. The manufacturer was contacted and confirmed that there was no warranty coverage. The failure mileage was approximately 105,000.

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

For the past month I have noticed my truck has been dripping oil, I pulled the shield off and saw my engine oil cooler lines leaking at the crimp points. I’ve seen gm put out customer satisfaction notice but when I tried to have the dealership fix mine they said mine is covered under any recall or warranty. If the line comes uncrimped at highway speeds I’ll lose all my oil where the trucks engine could lock up and lose all forward motion and in my eyes could cause a crash.

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.

The oil cooler line is leaking, and the vehicle is available for inspection upon request. This safety concern is addressed under gm program n192220080. The hazard is present: the leak is active. The risk of total line detachment and engine seizure is the same in texas as it is in alaska (the us state the GMC recalled the exact same part). An engine seizure and loss of propulsion is an immediate danger to passengers within the effected vehicle, as well as the other vehicles on the road. The admission of defect: gm’s offer to provide the part (part #85136335) confirms that my vehicle’s hardware is part of the failed batch. The vehicle was inspected by an authorized GMC dealership on 01/14/2026, confirming the leak and potential safety hazard with continued driving of the vehicle. The issue was submitted to the gm customer care team, case #[xxx]. The only warning of the defective oil cooler line leak was oil on the ground underneath the vehicle after driving. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

I am an owner of the same year, and model GMC Sierra 1500 included in the gm customer satisfaction program n212326940, which is the oil cooler line failure. However, my VIN was not included in the program despite experiencing the exact same failure the program covers. My safety and the safety of others is put at risk because the failure may cause an immediate loss of oil pressure or propulsion while driving. This is a huge safety hazard, since loss of vehicle control may occur. My vehicle has been inspected by a certified gm dealer and they confirmed the oil cooler line has failed and must be replaced. I have not experienced any warning lights, but my vehicle is leaking an excessive amount of oil. The vehicle is no longer safe to drive until repaired.

My vehicle recently experienced a sudden flashing check engine light, severe misfiring, and rough engine operation, creating an unsafe driving condition. An inspection by an authorized GMC dealership, serra Buick GMC champaign, confirmed a failed deactivating valve lifter on cylinder 5, documenting that the lifter ceased movement after a single engine rotation. The dealership advised that the failure necessitates replacement of all lifters and extensive internal engine components, at an estimated cost of $5,650. 75. This defect is not isolated, unforeseeable, or the result of consumer misuse. It is directly associated with general motors’ active fuel management (afm) system, which has been widely reported to cause: •premature lifter collapse •camshaft damage •severe engine misfires •loss of power while driving •catastrophic engine failure.

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

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.

On Wednesday, January 7th, 2026, my wife and I were traveling north on the northeast extension of the pennsylvania turnpike (476) at approximately 9:00 pm. A check engine light came on with no other symptoms, we start to get off the next exit. While still on the highway, the motor turns off with a warning to put it in neutral and restart. It would not restart and coasted off the exit and into a convenience store parking lot. There was noise, just turned off. We got stuck in the town for over 2 days before getting a tow 209 miles to the mechanic shop. We were miles from any mechanic shop and tried to troubleshoot while waiting and to no avail. First mechanic had to send it to a second because it looked like the engine had seized and that was confirmed at the second mechanic shop. Apparently the bearings in the lower end seized. The only thing they could offer was to replace the motor. It had proper amounts of fluids and didn't overheat. The motor replacement is approximately $10,800. 00 in addition to having no vehicle there was additional towing and breakdown expenses (food and lodging for 2 nights and 3 days).

I live in illinois, my 2019 GMC Sierra 1500 slt has 51,318 miles on it as of 12/31/2025. What component or system failed or malfunctioned, and is it available for inspection upon request? engine oil cooler hose line detaching from crimp - small oil leak currently. Not yet fixed. Available for inspection. How was your safety or the safety of others put at risk? if this component fails, all oil from the vehicle will be lost and inoperable. This could cause a traffic accident, especially if towing a load. Has the problem been reproduced or confirmed by a dealer or independent service center? confirmed by an independent service center. I will be taking my vehicle to the local GMC service center for additional confirmations. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? no, but gm has acknowledged the issue through these customer satisfaction surveys (csp xxx/ xxx). Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? there has been no failure yet. A small oil leak was found on my garage floor. My issue is that this is a known issue in cold weather climates. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

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.

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.

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

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.

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.

I was driving up the road truck cranked up fine started a morning commute, on cruise control the truck instantly out of nowhere lost power completely with no signs of anything and engine won’t attempt to turn over now. I fear the worst has happened which would be catastrophic internal failure for to a faulty engine & its internals.

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.

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).

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at various speeds, the braking system had erroneously activated, causing the vehicle to abruptly stop in the middle of the road. The vehicle was towed to the local dealer, who diagnosed that the failure was caused by an engine malfunction of the number six cylinder. The vehicle was repaired. No further information was available. After retrieving the vehicle, the contact was driving approximately 10 mph when the failure reoccurred and the braking system erroneously activated, causing the vehicle to abruptly stop. During the incident, the driver's head slammed into the steering wheel, causing a head laceration. No medical treatment was required. The vehicle was towed back to the dealer. The cause of the failure was not yet determined. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 120,000.

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.