2019 GMC Sierra Denali Transmission and drivetrain Problems
- Complaints
- 4about this part
- Share
- 15%of 26 total for the year
- Median mileage
- 2,490miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the transmission and drivetrain of the 2019 GMC Sierra Denali, 15% of the 26 complaints for this model year. Where a mileage was given, the median is 2,490 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Vehicle has faulty transmission system that at shakes during use of the vehicle at all speeds. The vehicle also experiences hard shifts at low speed to the point that the vehicle rear tire chirp with such force that it feels like you've been hit from the rear by another vehicle.”
NHTSA complaint #11281163, filed 2019-11, 4,500 miles“Electric/electronic/computer issues. Most issues are intermittent, some happen all the time. The intermittent ones sometime happen in clusters (multiple times a day then not for days, weeks, months) a few have only happened once so far. The following issues happen all the time. Does not come out of cruise control automatically during collision alert. Does not automatically brake during imminent collision with auto brake feature turned on. Secondary bluetooth phone does outgoing calls through trucks info system. Heads-up display gives double turn directions during route guidance nav. …”
NHTSA complaint #11307106, filed 2020-02, 480 miles“The contact owns a 2019 GMC Sierra Denali. The contact stated while parking the vehicle, the vehicle inadvertently stalled without warning. The contact attempted several times to restart the vehicle however, the vehicle would not restart. The contact attempted to jump start the vehicle and the failed to start. The vehicle was towed to the dealer where the starter was replaced; however, the failure persisted. The contact was informed that the engine needed to be replaced due to metal shavings in the engine. The vehicle was not repaired. …”
NHTSA complaint #11474899, filed 2022-07, 91,000 milesRelated service bulletins
- 11019516Apr 17, 2025This preliminary informational (PI) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers.
- 11013069Jan 9, 2025This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
- 11011989Nov 27, 2024This service bulletin provides information on the harmful effects of ethylene glycol in transmission fluid.
- 11011205Oct 28, 2024This informational bulletin explains Unscheduled Supplemental Services and the importance of GM Simplified Maintenance Schedules.
- 11009756Sep 17, 2024This bulletin provides information on Policies Applicable to All U.S. Dealers for Engine and Transmission Assembly Replacement Under Warranty, Policy or Customer Enthusiasm and…
- 11009088Sep 16, 2024This service bulletin provides information on some vehicles that may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be…
- 11006421Jul 24, 2024GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or…
- 11005311Jul 9, 2024This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation.
- 11001321May 16, 2024This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
- 11000119Apr 26, 2024This service bulletin provides technicians with information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
Transmission and drivetrain: other model years
Other parts of the 2019 GMC Sierra Denali
8 complaintsSteering
7 complaintsElectrical system
5 complaintsElectronic stability control
5 complaintsOther or unknown
5 complaintsEngine
4 complaintsExterior lighting
2 complaintsBack-over prevention (rear camera)
1 complaintsEngine cooling
1 complaintsEquipment
1 complaintsBody and structure
1 complaintsTires
1 complaints
← All problems reported for the 2019 GMC Sierra Denali
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology