general problems of the 2019 GMC Sierra 1500 - part 1

2019 GMC sierra denali 6. 2l , back in March 2026 my motor seized up , waited for a month for a new motor replacement that I had to pay out of pocket for 12k+, finallyy got my truck back mid may! , fast forward to [xxx], lifters and cam went out had to get replaced, I only driven under 5k miles since the motor replacement (the motor I payed for came with a 3 year warranty) , also over a months waiting… [xxx], I receive a call from the dealership saying my truck was ready for pick up but during the test drive , it started having a bottom end problem, turns out it was a bearing issue! , now they have to replace the motor again! michigan! information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

I am writing to formally log a safety concern regarding my vehicle’s 6. 2l l87 engine, specifically in relation to the known defects under NHTSA’s ongoing engineering analysis ea25007. The engine seized up while driving in traffic which has a safety impact on the occupants and other drivers. The vehicle was towed to gm and the they noted the the engine has catastrophic internal failure with large metal debris in the engine oil and filter. This is consistent with failures that other gm owners have experienced with gm's l87 engine. The initial recall (recall 25v-274) for a specific manufacturing window (March 1, 2021, to may 31, 2024), the NHTSA launched ea25007 because it continued to receive a flood of complaints from owners whose vehicles fell outside that original recall window. That is me, I am outside that original window. But I am confident that the issue was known by gm and should have been handled several years ago with a wider recall window. Now I was exposed to a safety issue and I am stuck with a large repair bill. I think there is an even broader active investigation ea26005.

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving 35 mph, the vehicle lost automotive power. There was no warning light illuminated. The contact attempted to restart the vehicle, and the check engine warning light illuminated. The vehicle was towed to an independent mechanic to be diagnosed, and dtc: p0016 was retrieved. The contact was informed that the engine needed to be replaced due to catastrophic engine failure. The manufacturer was notified of the failure. The failure mileage was 113,000.

I am the owner of a 2019 GMC Sierra 1500 4wd equipped with the 6. 2l l87 v8, VIN [xxx], currently at 177,271 miles. On [add date] while driving 40-45 mph westbound on [xxx] near xxx in [xxx], in a school zone, the engine suffered sudden catastrophic internal failure with complete loss of propulsion and would not restart. No prior warning lights or low oil pressure warning. Vehicle required tow from school zone. GMC dealer inspected and verified catastrophic internal failure. Dealer stated verbally failure is either camshaft broken in half or timing chain sprocket/pulley broken off or loose causing timing chain to come off. Timing cover was not removed to confirm. Dealer stated engine is not repairable and quoted $13,500 for new engine replacement only. I have copies of the work order and the dealer's written statement verifying internal failure and replacement recommendation. Engine and vehicle have been retained. 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 55 mph, the vehicle experienced engine failure. The vehicle was towed to the local dealer, where it was diagnosed with total engine failure. The dealer informed the contact that the VIN was not under recall. The failure mileage was approximately 142,370.

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the vehicle came to a full stop to allow wildlife to cross the road. Upon accelerating, the engine made an abnormal banging noise. The contact stopped to inspect the vehicle and observed an engine misfire while idling. The vehicle was towed to the residence, where an independent mechanic diagnosed that the lifters had collapsed, and that the engine needed to be disassembled for further diagnostic testing. The failure mileage was approximately 159,000.

Driving vehicle at normal speeds and engine suddenly shut of and stopped in the road. Would not restart. Had to get it towed to dealer who diagnosed problem as a seized up engine and need a new engine replacement.

Engine went out very devastating $10k out of pocket.

The lifters collapsed on cylinder 3 causing the camshaft to shed metal into the oil leading to bearing failure. Leaving us stranded 210 miles away from home. Motor has 85,909 miles. This is the same problem that the 2021 model year trucks have that has a recall. The 2019 model years have the exact same problems. I personally know 6 people who have had this happen. Check out the facebook page. Gm 6. 2 lifter and bearing failure.

Subject: event of engine failure • while driving on a level paved road at 15 miles per hour in a busy area my 2019 GMC sierra denali pickup truck stalled in the middle of a busy street. • truck stalled in a heavy traffic area at an intersection putting myself and passengers in a dangerous area and situation. This obstructed the normal flow of traffic causing a danger to pedestrians and normal vehicle traffic pattern. Each had to go around my disabled truck into oncoming traffic putting them and normal traffic flow at risk. •upon securing a towing service the truck was transported to the nearest gm dealership. This happened on a Friday afternoon and the truck got to the dealership after hours. I returned to the dealership the next morning and was told that they may not be able to check the truck until probably Tuesday. On Monday afternoon I called and they hadn't been able to get to it. I received a call the next day and was informed that the technician at the dealership had put a breaker bar to the crankcase and the engine would not move and therefore the engine is seized. • there were no warning lights that came on prior to the truck stalling in the street. There was no noise prior or any other symptom to give any indication that the truck was not operating in a normal fashion.

Truck has the 6. 2 litre engine,failed. Gm won't do anything to fix or replace the engine.

6. 2 liter engine failure @ just over 100,000 miles. Prior to 100k miles I had taken to the dealership for sporadic loss of oil. They confirmed that the oil had been upgraded previously as instructed by gm so must be another source of the leak. Engine locked up while driving down the road. Had to have the vehicle towed and the mechanical said the motor is shot, and related to lower camshaft bearing issue. The only warning signs were the low oil light which happened around the mid 90k miles, so I would monitor that. When the engine failed there was no low oil light on, it just started shaking/vibrating and then kicked out. I think hte mileage read right around 103,000 approx. When it died.

Total engine power loss while driving 70mph on the highway in steady moving traffic causing a safety hazard, with 3 young children in the vehicle. No prior warning lamps, messages or symptoms to indicate a problem. Engine completely shut down while driving and will not turn back on. Had vehicle towed to the dealership. Certified GMC dealership did a full inspection and indicated that the engine assembly needs to be fully replaced. Nhtsa campaign 25v274 for vehicles 2021 and newer is for the same exact engine failure issue with the same engine size. I would appreciate you exploring the possibility of covering this catastrophic malfunction as an exception to the aforementioned recall campaign. Many other drivers have noted the same failure with the 2019 as was included in the recall for 21-24. Thank you for your consideration, please feel free to reach out to me directly to discuss further. I look forward to hearing from you!.

I am writing to formally log a safety concern regarding my vehicle’s 6. 2l l87 engine, specifically in relation to the known defects under NHTSA’s ongoing engineering analysis ea25007 (previously preliminary evaluation pe24004). While my vehicle is currently running and has 52,000 miles on the odometer, it falls squarely within the manufacturing window being investigated for premature engine failures due to defective connecting rod bearings and dynamic fuel management (dfm) lifters. My primary concern is the severe safety hazard presented by a sudden, catastrophic engine failure. A sudden seizure or loss of motive power at highway speeds puts myself, my passengers, and other drivers at an immediate risk of a high-speed collision, especially if it occurs without prior warning lights or symptoms. Because gm’s previous engine recalls (such as 24v-418) excluded the 2019 model year despite utilizing the same vulnerable engine family, I am filing this report to urge the NHTSA to expand the recall to include 2019 models. I want my vehicle's VIN documented as part of this vulnerable population so that a proactive, permanent remedy can be mandated before a dangerous highway failure occurs.

The engine went into limp mode as I made turn leaving the damn I was is in town and it was a lot of traffic could’ve been bad if I didn’t pull into the median left me devastated and no crank no start I’ve only had the truck a year it went down a month from when I purchased it.

The lifter on my gm sierra at4 truck with a 6. 2l (l87) engine collapsed and damaged the engine shafts and cylinders in the block. While driving, the engine started to lose power, and a ticking noise started to occur. I pulled the car over to the side of the road and called the dealer, which told me to have the truck towed into the dealership. Metal was found in the oil. The entire engine has to be replaced for $12k. I have a life time oil change service with the dealer an also an extended warranty, but my mileage was over the warranty by 6k miles. The warranty ended at 106k miles and actual milage was 113k. I reached out to my dealer and also to gm to discuss goodwill assistance and gm pushed back indicating they cannot do anymore. I asked the rep to esalate the ticket.

Engine failure at random while operating. Dealership stated vehicle blew engine block fuse and crankshaft is now seized.

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving 55 mph, the low oil pressure message was displayed. The engine oil cooler line had detached, and oil was leaking from the vehicle, causing the engine to seize. The contact associated the failure with general motors customer satisfaction program: n212326940. The vehicle was towed to the local dealer, where it was diagnosed that the engine needed to be replaced. The vehicle had not been repaired. The manufacturer was contacted and opened a claim. The failure mileage was approximately 96,182.

The contact owns a 2019 GMC Sierra 1500. The contact stated while driving at 55 mph, the vehicle made an abnormal rumbling sound and stalled. All the warning lights illuminated. The vehicle was taken to a nearby independent mechanic, who determined that the engine lifter and cylinder had failed. The vehicle was not repaired. The local dealer was not contacted. The manufacturer was contacted and confirmed that there was no recall coverage. The manufacturer referred the contact to the NHTSA hotline for assistance. The failure mileage was approximately 98,003.

I haven’t even owned my truck for2years.

I believe I had a lifter failure as I was traveling up sr 393. Safety issue as vehicle lost power. Vehicle is at dealership now and confirmed possible lifter collapse. No dashboard lights were on or any power issues prior.

The contact owns a 2019 GMC Sierra 1500. The contact stated that upon starting the vehicle, the engine seized. There was no warning light illuminated. The vehicle was towed to a local dealer to be diagnosed. The contact stated was informed that the engine failure was caused by rod bearing failure. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 115,000.

The contact owns a 2019 GMC Sierra 1500. The contact stated that the engine failed to start after several attempts. The vehicle was towed to an independent mechanic where a diagnostic test was performed and the mechanic discovered metal shaving inside the engine oil pan. The vehicle was diagnosed with engine failure. The vehicle was repaired. The failure mileage was approximately 164,687.

See attached document for complaint.

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving at 25 mph, the check engine warning light illuminated, and the engine started knocking. The contact pulled over immediately and contacted an independent mechanic, who recommended continuing to continue driving at a slow speed. The contact resumed driving to the residence. The contact's son, who was a highly skilled mechanic, diagnosed that the left bank lifters had failed. The vehicle was not repaired. The dealer was contacted several times and informed that the VIN was not included in a recall and referred the contact to the manufacturer for assistance. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 83,000.

Complete failure on cylinder 3 after afm system caused lifter collapse in 5. 3l v8. Lifter fell into cam shaft and scored the shaft at 55mph. Truck started surging and shaking violently. Truck shaking had me swerve to the side of the road as I was coming up on a crosswalk with golf cart about to cross the road. Vehicle was inspected at atwater gm in aitkin, mn and component failure was identified. Two weeks later I paid $14,149 to have a complete engine replacement. There was absolutely no indication that this event would take place. Just months before I took this truck from [xxx] to [xxx] and back without an issue. Gm should be held responsible for a complete lack of safety due to faulty afm engines. Not only did this endanger my safety, but I also had to withdraw from my 401k to pay for the outrageous cost of a new engine replacement because of a single point of failure. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

Engine seized on june29th while driving on I 64 . (6. 2 l87) due to oil line failure. Engine replaced on July 18th, 2026. New engine started leaking oil from camshaft and gasket on August 10th 2026, back in GMC shop on august12th 2026 for repairs, still waiting parts today. Sudden failure on road in traffic inspected by GMC southpoint. No indication prior to failure and shut down completely. Could not do anything to move vehicle out the road.

My 2019 GMC Sierra 1500 at4 equipped with the 6. 2l engine experienced an internal engine/lifter failure. The vehicle was inspected by an authorized GMC dealership. The dealership documented damaged lifters, including rough edges and visible signs of friction, and advised that the camshafts on these vehicles can also have issues. I was provided estimates for both a lifter repair and complete engine replacement. Due to the possibility of additional internal engine/camshaft damage and the risk of having to repeat the lifter repair, complete engine replacement was recommended. The dealership is replacing the engine with a gm remanufactured engine, part #19420611, carrying a 3-year/100,000-mile warranty. The customer-paid repair is approximately $9,400 plus applicable taxes and shop charges because my 2019 vehicle/VIN is not currently included in the existing l87 engine recall. I am submitting this complaint because NHTSA is currently investigating failures involving 6. 2l l87-equipped vehicles outside the existing recall population. I believe this failure should be documented and considered as part of the investigation into whether the affected vehicle population should be expanded. I have requested the dealership provide the technician's complete diagnosis and documented cause of failure and can provide additional information when received.

I am retired and have always bought gm vehicles which are taken care of with required oil changes etc. This one I have only owned 25,000 mi each year (I have owned two years). So, when purchased it has high 50,000 miles not sure of exact, and it has only been driven 2 years. When calling escalation at gm, they act as though it doesn't matter and too bad. 110,000 miles and the truck needs a new motor. This is what we are told and 10,000 more than the initial 1500 to tear it down. This truck is not broken due to us, this is a problem with the manufacturer and the responsibility needs to be addressed. My husband has a heart issue and he almost didn't make it home. I'm not accepting that nothing be done, since next we need a lawyer and a media appointment. This isn't right when you see thousands of people with the same GMC sierra trucks online with complaints of the same valve and motor issues. This needs completely replaced and not by a customer, by the manufacturer. How can 1500 people new wrong on one sight stating the same as we have had. This person who is responsble for reporting and making sure we are safe needs to be fired. I am writing my representatives, senators etc to let them know this is going on. No one should pay for the mistakes of bad engineering. Period.

The contact owns a 2019 GMC Sierra 1500. The contact stated that while driving 75 mph, the message "engine power reduced" was displayed and the vehicle decelerated and stalled. The vehicle was pulled over onto the shoulder and failed to restart. Roadside assistance was called to the scene, and the vehicle was towed to the local service center, diagnosed, and it was determined that the engine cam actuator screws had failed causing metal shavings to enter the engine and turbo. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer and local dealer were notified of the failure. The failure mileage was 95,000.

On [xxx], my 2019 GMC Sierra 1500 denali equipped with the 6. 2l engine suffered a sudden loss of power while driving. The vehicle lost propulsion and could not continue operating normally. The vehicle was taken to orange Buick GMC in orlando, florida. The dealership advised that the engine is locked and unable to rotate manually, and that the engine requires replacement. The vehicle has approximately 126,000 miles. This failure occurred while the vehicle was being driven and created a safety concern due to sudden loss of propulsion. A sudden engine lockup or loss of power could increase the risk of a crash, especially if it occurs in traffic, at highway speed, while turning, or while crossing an intersection. There was no crash, fire, injury, or death. The vehicle remains at the dealership awaiting repair. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

While towing jetski's the #2 cylinder has a persistent misfire. Was able to limp to chapman Chevrolet where it took 2 days to diagnose. Vehicle is below 70k, which just recieved a brand new transmission and torque converter due to metal shavings from converter getting pushed through to the transmission. Service advisor's message below: "performed further diagnosis and requested engine teardown to determine root cause of misfire. During disassembly, found cylinder #2 intake/exhaust valve train failure, including a bent pushrod and a severely scored/collapsed lifter. Inspection revealed the damaged lifter had caused abnormal contact with the camshaft lobe, resulting in significant scoring and wear of the camshaft. The failed lifter and bent pushrod led to loss of proper valve operation and cylinder misfire. Point of failure is lifter #2 that resulted in camshaft failure as consequence. I am in the process of generating a quote and taking pictures for the extended warranty. " seems like another afm/dfm issue has brought down another gm motor. Why are these motors not part of the recall, when they are going down the same was as the recall? my safety and my family were put at risk for a possible catastrophic failure and loss of power due to the engine being faulty. There were no warning laps, just check engine light, parking break wrench light. The only other sign was a quite tick that is with most chevy/gm motors.

No warning lights, engine stalled in the middle of the freeway almost got killed by a semi truck was behind me, engine lost power and found that needed new engine because of the camshaft and internal damage. Confirmed by certified mechanic.

My 2019 6. 2 engine suffered from severe loss of compression caused by internal piston ring failure and bore scoring also loss of power . In the 6. 2l engine , piston ring failure and ring- seal are direct consequences of connectiing rod alignment errors, my engine failure is proof that this is the same situation that is currently under investigation and have proof with compression test and report done by my technician . First time it happened to me it just stopped on me in the middle not the road all lights came on the dash including esc light something it never done before. But before this happened it had been running rough. I took it first to the local repair shop and they wouldn't be able to work on it , so I took it to the local dealer and there it got. Worse from there . Took it to the dealer changed the battery and it was running again but they found it had really bad leak on the rear main seal spent over $3,000 for all of it. Thought the problem was over after that months later after it was running rough again took back to the dealer and from there they told me there were oil coming through the piston rings and metal shaving in the engine and from there found out engine needed to be replaced warranty company would not cover it. I had to pay 1500. 00 for rental car coverage, teardown of engine was 3,500 since the extended warranty did not cover it endurance warranty CO. Denied my claim. Dealership is charging me out of pocket charges of 13,495 for the engine replacement plus engine teardown endurance warranty CO. Denied my claim. Even after paying for warranty for almost 2 years. Gm says manufacture warranty is out of coverage can not be apart of the recall but engine failure mirrors 21-24 recall 6. 2 engines.

There was a catastrophic internal engine failure, due to cam/lifter/bearing issues. This caused the timing chain and tensioner to jump and the engine to be out of alignment. This caused the valves to all be bent as a result. I believe that this has been an issue for longer than what gm has originally recalled for, and I am submitting this complaint because I read that there is an active investigation into this.