Complaint volume
608 consumer-submitted complaints are matched to this model year. Treat the count as a research signal, then read the actual summaries for repeated symptoms.
Complaint records
2019 GMC Sierra Complaints
608 consumer-submitted complaints on record for the 2019 GMC Sierra, grouped by component category.
608 Total complaints
12 Crash reports
3 Fire reports
7 Injury reports
Complaint data reflects consumer-submitted reports. A complaint is not proof
of a defect, recall, or manufacturer fault. Enriched severity fields come
from official bulk records when the complaint can be matched by ODI number.
Buyer interpretation
How to use these complaints before buying
Complaint records are most useful when they turn into inspection points, seller questions, and comparison checks against nearby model years.
Pattern to inspect
The most common categories are engine, power train, service brakes. Use those categories as a test-drive checklist instead of judging the vehicle from the total count alone.
Severity flags
Enriched records include 12 crash reports, 3 fire reports, 7 injury reports, and 0 fatality reports. These fields come from complaint records and should be read in context.
Mileage clue
Mileage is available on 210 complaints, with an average reported failure mileage of 37,279 miles. Compare that with the mileage on the listing.
Questions to ask the seller
- Have you had any problems related to engine, power train, service brakes?
- Can I see recent maintenance and repair records?
- Has the vehicle ever been towed, involved in a crash, or repaired for the same issue twice?
- Can we also check the recall record for this 2019 GMC Sierra?
Used-car checklist
Use these complaints before the test drive.
Build a buyer checklist to turn these issues into questions and inspection points.
2019 GMC Sierra
Build buyer checklist Compare with other years Sends year, make, and model to pre-fill your checklist.
How severe are the 2019 GMC Sierra complaints?
12 Crash
3 Fire
7 Injury
0 Fatality
52 Towed
1 Medical attention
What are the most common 2019 GMC Sierra complaint categories?
ENGINE 193
POWER TRAIN 76
SERVICE BRAKES 41
UNKNOWN OR OTHER 24
ELECTRICAL SYSTEM 18
POWER TRAIN,ENGINE 18
ENGINE AND ENGINE COOLING 14
STEERING 14
ELECTRICAL SYSTEM,SERVICE BRAKES 9
STEERING,ELECTRICAL SYSTEM,SERVICE BRAKES 9
608 total complaints on record
Latest complaints
| Date | Component | Summary | Severity | Mileage |
|---|---|---|---|---|
| Jul 2026 | POWER TRAIN,UNKNOWN OR OTHER | TSB 19-NA-121. My truck is experiencing the exact issues detailed in the listed TSB. Randomly and quite often my truck feels like I am running over speed bumps. This just started about 3 days ago. The truck has been maintained. Oil is changed on time and there was a 100,000 mile service and I just had a 150,000 service done. Currently there are roughly $148,000 miles on the vehicle. Is there a way to have GM cover the costs of the repairs even though my VIN# was not listed. Also I am experiencing sudden power loss which is also mentioned in other bulletins. Basically it feels like the engine hesitates to accelerate. | Crash: No Fire: No | Unknown |
| Jul 2026 | ENGINE | Engine failure at random while operating. Dealership stated vehicle blew engine block fuse and crankshaft is now seized. | Crash: No Fire: No | Unknown |
| Jul 2026 | POWER TRAIN | Experienced the GMC shudder while driving on the highway. This is a known issue with GMC transmissions valve bodies and torque converters. I would like to know why my vehicle is not on the recall list 2019 GMC? 85,000 miles and has always shifted hard randomly when cold but was unaware of the problem until this shudder became an issue and started looking into it. | Crash: No Fire: No | Unknown |
| Jul 2026 | ENGINE,FUEL/PROPULSION SYSTEM | 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! | Crash: No Fire: No | Unknown |
| Jul 2026 | ENGINE AND ENGINE COOLING | 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. | Crash: No Fire: No | Unknown |
| Jul 2026 | POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM | 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 | Crash: No Fire: No | Unknown |
| Jul 2026 | POWER TRAIN,ENGINE | 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. | Crash: No Fire: No | Unknown |
| Jul 2026 | ENGINE | 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. | Crash: No Fire: No | Unknown |
| Jul 2026 | ENGINE AND ENGINE COOLING | 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. | Crash: No Fire: No | 98,003 |
| Jun 2026 | ENGINE,FUEL/PROPULSION SYSTEM | Lifters (the part that opens and closes engine valves) fail prematurely. There was a loud ticking noises, rough idling. Took to dealership and they advise that yes the lifters are failing and not drivable at this time. | Crash: No Fire: No | Unknown |
| Jun 2026 | ELECTRICAL SYSTEM,EXTERIOR LIGHTING,ENGINE | 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. | Crash: No Fire: No | Unknown |
| Jun 2026 | ENGINE | 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 | Crash: No Fire: No | Unknown |
| Jun 2026 | ENGINE AND ENGINE COOLING | 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. | Crash: No Fire: No Towed | 95,000 |
| Jun 2026 | ENGINE | 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) | Crash: No Fire: No | Unknown |
| Jun 2026 | ENGINE | Engine fail due to lifters collapsing, had a really bad lifter on #3 and #2 and cause to chew out camshaft . Needed a new engine and gm didnt wanna honor it warranty only partial . | Crash: No Fire: No | Unknown |
| Jun 2026 | ENGINE | On May 27, 2026, I was on my way home from work when I went to accelerate the vehicle and all the sudden it started shaking and the check engine light came on with the EBS. I was able to get the vehicle to a repair shop local the next day, who took the car apart. What was thought to be an easy fix of spark plugs and fuel injector, became even more after they put back together and the cylinder was still misfiring. After several hours of taking apart the engine, the mechanic determined that the hydraulic valve lifters had failed. This has been an ongoing issue with with the 5.8L V8. Due to a recall not being under the vin yet, i have now incured a $16k expense to add an engine to it after i purchased it in Nov of 25 at $97,000. This is a saftey issue and luckily no one was hurt when the car started shaking and couldn't go over a certain speed. I want this reviewed and looked at for possible reimbursement as there have been several other vehicles with the same known issue. | Crash: No Fire: No | Unknown |
| Jun 2026 | ENGINE | I was driving, suddenly my truck is dead. I got it tow to GM dealership for weeks. The technician diagnose and said I need a new engine replacement. My truck is only 148K. | Crash: No Fire: No | Unknown |
| Jun 2026 | ENGINE | 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. | Crash: No Fire: No | Unknown |
| Jun 2026 | ENGINE | Vehicle lost power and shut down while driving at 60 mph, would not restart | Crash: No Fire: No | Unknown |
| Jun 2026 | POWER TRAIN,VEHICLE SPEED CONTROL,UNKNOWN OR OTHER | Transmission blew on a 7 year old vehicle. Was replaced entirely and is NOW having the EXACT SAME PROBLEM AGAIN! | Crash: No Fire: No | Unknown |
| Jun 2026 | ELECTRICAL SYSTEM,EXTERIOR LIGHTING | The contact owns a 2019 GMC Sierra 1500. The contact stated that the trailer lights flashed intermittently while the vehicle is turned off. Additionally, the contact stated while driving with a trailer hitched to the vehicle, the messages "Trailer Disconnected" and "Trailer Connected" were intermittently displayed, and the running and marking lights were inoperative. The contact related the failure to GM TSB Numbers: 20-NA-198 (Trailer Running Lights Shut Off Due to Excessive Load on the Running Lamp Circuit), PIT5747B (Diagnostic Tip - Trailer Lighting Complaints with Trailering App RPO U1D) and N192213550 (Service UpdateTrailer Integration Module Software Error). The vehicle was taken to an independent mechanic, where it was determined that the failures were due to a wiring or software failure. The contact was informed that the failure was a factory defect because the fuses were in good condition. The vehicle was not repaired. The dealer and the manufacturer were not contacted yet. The failure mileage was approximately 64,000. | Crash: No Fire: No | 64,000 |
| May 2026 | UNKNOWN OR OTHER | Back window water leaking causing bad smell and mod | Crash: No Fire: No | Unknown |
| May 2026 | POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM | While driving, the vehicle suddenly began running rough, losing power, and displaying engine warning lights. Due to the severity of the issue, the vehicle was towed to a GMC dealership for diagnosis. The dealership diagnosed lifter failure and a cracked cylinder head. The dealership also documented coolant intrusion, oil/coolant contamination, and evidence of internal engine damage. Repairs were attempted, including replacement of the cylinder head and lifter. After the repairs were completed, the vehicle never left the dealership because it continued misfiring on the same cylinder. GM later determined the engine had a failed piston ring and scored engine block requiring complete engine replacement. The vehicle has approximately 55,000 miles, has been properly maintained, and was purchased new. This catastrophic engine failure resulted in loss of power and major internal engine damage at relatively low mileage. I also opened a case directly with GM Customer Assistance regarding this failure. The case involved multiple escalations after the initial repair attempt failed and the vehicle ultimately required full engine replacement. GM ultimately advised that only partial assistance toward the engine replacement would be provided, leaving the customer responsible for a significant portion of the repair cost. I am submitting this complaint because this vehicle appears consistent with the ongoing NHTSA investigation involving GM 6.2L L87 engine failures and loss of motive power. | Crash: No Fire: No | Unknown |
| May 2026 | ENGINE AND ENGINE COOLING | The contact owns a 2019 GMC Sierra LD 1500. The contact stated that while driving approximately 65 mph, the vehicle, went into low power mode, and was able to move safely to a and then the vehicle stalled. The vehicle was towed to an independent mechanic and was diagnosed as the engine has no compression, suspect a possible crankshaft failure, also a possible engine replacement. The manufacturer was notified of of the failure. The contact associated the failure with NHTSA Campaign Number 25V274000 (Engine and Engine Cooling). The approximate failure mileage was 130,000. | Crash: No Fire: No Towed | 130,000 |
| May 2026 | ENGINE | Engine component failure. If not identified early could have caused catastrophic failure being disabled in traffic. This problem has been diagnosed and confirmed by a certified GM dealership. Initial warning sign was a knock in the engine, no warning lamps. First identified on 9/2/25 at 80,345 miles. Dealership changed oil to a higher viscosity. Problem gradually got worse, diagnosed #3 cam lobe failed 3/9/26 at 85,437 miles. | Crash: No Fire: No | Unknown |