2019 GMC Sierra Denali Problems
Compared with other GMC Sierra Denali years
More complaints than typical for this model
77/100 1.9× a typical year · 50 = typical
- Complaint rate is 1.9× that of a typical GMC Sierra Denali year, weighted for crashes, fires, injuries, recalls and mileage, and allowing for the era and for how long each year has had to collect complaints.
- 22 of its 26 complaints were filed by the end of 2021.
- Most reported part: Brakes (8 complaints, median 3,450 mi).
Nearby years with a typical complaint level and no open NHTSA investigation: 2016
Based only on NHTSA complaints, recalls and investigations. Not adjusted for how many vehicles were sold, and not a reliability rating. How this is calculated
- Complaints
- 26filed with NHTSA
- Median mileage
- 5,269miles, 24 complaints with mileage
- Recalls
- 0campaigns on record
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
Sources: NHTSA records for the 2019 GMC Sierra Denali (complaints, recalls, investigations). Report an error
NHTSA recorded 26 consumer complaints for the 2019 GMC Sierra Denali. The part named most often is brakes, with 8 complaints (31% of the total), followed by steering (7) and electrical system (5). 24 of the complaints include a mileage, and 92% of those were filed for vehicles with under 50,000 miles; the median is 5,269 miles. Of all complaints, 1 an injury, according to the filers. NHTSA lists 0 recall campaigns and 647 technical service bulletins for this model year. Brakes complaints overlap with 17 technical service bulletins filed under the same part. Steering complaints overlap with 12 technical service bulletins filed under the same part. Compared with the other 2 GMC Sierra Denali model years that have at least 25 complaints and are old enough to compare, this one scores 77 out of 100, where 50 is a typical year for the model (more complaints than typical for this model). The comparison allows for the era and for how long each year has had to collect complaints, but not for how many vehicles were sold.
Which parts are reported most
Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.
- Brakes8 31%
- Steering7 27%
- Electrical system5 19%
- Other or unknown5 19%
- Engine4 15%
- Exterior lighting2 7.7%
- Engine cooling1 3.9%
Also reported: Equipment (1), Body and structure (1), Tires (1), Visibility (wipers, defrost, mirrors) (1).
Example complaints
Brakes: “After starting vehicle using the mygmc app, I received the following warnings: 1. Service trailer brake system 2. Steering assist is reduced drive with care 3. Service ESC 4. Brake system failure 62 MPH top speed 5. Check engine light. Vehicle was stationary and I did not drive afterwards. Truck was in for service last week to complete recent recalls and replace a leaky rear window. …”
NHTSA complaint #11301709, filed 2020-01, 9,793 milesSteering: “I started my vehicle on january 7th 2020 at about 4:00pm to return home from work I received multiple warning lights and the check engine light went on. The warns read break system failure 62 MPH too speed , service ESC , steering assist is reduced drive with care , service trailer break system . The vehicle would not break properly I would estimate the breaking capacity at 30% from normal. …”
NHTSA complaint #11297849, filed 2020-01, 1,403 milesElectrical system: “On january 23rd I started the Gmc via the Gmc phone app and when I got in the truck pushed brake and start button and that's will gauges went crazy saying brake malfunction .steering ,speed reduced to 62 MPH and brake pedal went to floor with little to no brakes and stopped the truck turned it off and on twice before all codes cleared except now the check engine light is on . Brakes appeared to work fine after te second time of turning the truck off and on .970 miles on it!”
NHTSA complaint #11301754, filed 2020-01, 970 milesElectronic stability control: “After using app to start the vehicle, I sat in the driver seat depressed the brake and pushed the start button. Immediately a warning popped up saying ESC needed service, service trailer brake, speed limited to 62mph. Additional lights illuminated including brake, traction control, ABS, and cel. Since the dash indicated that the speed was reduced I thought it would be safe to drive, however at the first turn I realized my brakes were nearly gone and I went through the intersection. …”
NHTSA complaint #11306648, filed 2020-02, 2,000 milesMileage when problems were reported
92% of the 24 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 1,403 and 9,793 miles.
Complaints by year filed
Trend: falling. Complaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
Recalls and investigations
NHTSA lists no recall campaigns for the 2019 GMC Sierra Denali in the data used here. A recall can apply to some vehicles of a model year and not others, so check a specific vehicle by VIN at nhtsa.gov/recalls.
Technical service bulletins
TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 647 on record; the latest 10 are shown.
- 11037555Sep 26, 2026Other or unknown. This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- 11037253Sep 4, 2026Other or unknown. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11035340Jul 21, 2026Other or unknown. PI to help diagnose A/C concern
- 11030974Apr 1, 2026Other or unknown. This preliminary information communicates information about how to determine if a wheel and tires size change is available.
- 11030092Mar 9, 2026Other or unknown. This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
- 11030091Mar 9, 2026Other or unknown. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11029950Mar 2, 2026Other or unknown. This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss
- 11027697Jan 16, 2026Other or unknown. This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
- 11027601Jan 8, 2026Other or unknown. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11025755Nov 20, 2025Other or unknown. This Preliminary Information communication provides information to the technician about vehicles that have had multiple repair attempts that are being performed on customer’s vehicles that exhibit…
Other model years of the GMC Sierra Denali
| Year | Complaints | Median mi | Recalls | Crash ★ | MPG | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|---|
| 2020 | 11 | 20,000 | 0 | — | — | — | Not enough data |
| 2019 | 26 | 5,269 | 0 | — | — | 77 · More | Falling |
| 2018 | 17 | 28,000 | 0 | — | — | — | Falling |
| 2017 | 15 | 60,000 | 0 | — | — | — | Falling |
| 2016 | 30 | 48,000 | 0 | — | — | 50 · Typical | Falling |
| 2015 | 22 | 47,800 | 0 | — | — | — | Stable |
| 2014 | 14 | 59,496 | 0 | — | — | — | Not enough data |
| 2013 | 8 | 70,000 | 0 | — | — | — | Not enough data |
| 2012 | 10 | 50,000 | 0 | — | — | — | Not enough data |
| 2011 | 28 | 65,000 | 0 | — | — | 0 · Fewer | Falling |
| 2010 | 10 | 45,284 | 0 | — | — | — | Not enough data |
| 2009 | 7 | 94,000 | 0 | — | — | — | Not enough data |
| 2008 | 18 | 58,000 | 0 | — | — | — | Stable |
| 2006 | 5 | 61,000 | 0 | — | — | — | Not enough data |
| 2004 | 11 | 44,000 | 0 | — | — | — | Not enough data |
| 2002 | 13 | 79,315 | 0 | — | 12 | — | Not enough data |
All GMC Sierra Denali model years · Best and worst years by complaints
Frequently asked questions
How many NHTSA complaints does the 2019 GMC Sierra Denali have?
NHTSA recorded 26 consumer complaints for the 2019 GMC Sierra Denali as of Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
What part of the 2019 GMC Sierra Denali is reported most often?
Brakes is named most often, in 8 complaints (31% of the total), followed by steering with 7.
Has the 2019 GMC Sierra Denali been recalled?
NHTSA lists no recall campaigns for this model year in the data used here. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.
At what mileage are problems with the 2019 GMC Sierra Denali reported?
Among the 24 complaints that include a mileage, the median is 5,269 miles and the middle half falls between 1,403 and 9,793 miles; 92% were filed for vehicles with under 50,000 miles.
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.