AI DamageGMC Envoy Denali: problems, complaints, bulletins
Summary for the GMC Envoy Denali across 2 model years: 118 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
What fails most often
- 1 Electrical system 23% of all complaints
- 2 Fuel system 19% of all complaints
- 3 Exterior lighting 19% of all complaints
- 4 Engine 14% of all complaints
- 5 Suspension 12% of all complaints
- 6 Fuel/propulsion system 9% of all complaints
- 7 Powertrain 7% of all complaints
- 8 Electronic stability control 6% of all complaints
- Electrical system: 27 complaints (23% of all).
- Fuel system: 23 complaints (19% of all).
- Exterior lighting: 22 complaints (19% of all), 2 of them with a crash reported by the owner.
- Engine: 16 complaints (14% of all).
- Suspension: 14 complaints (12% of all).
Symptoms owners describe
How many of the 118 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 27 | 0 | 0 |
| Fuel system | 23 | 0 | 0 |
| Exterior lighting | 22 | 2 | 0 |
| Engine | 16 | 0 | 0 |
| Suspension | 14 | 0 | 0 |
| Fuel/propulsion system | 11 | 0 | 0 |
| Powertrain | 8 | 1 | 0 |
| Electronic stability control | 7 | 0 | 0 |
| Engine and cooling | 6 | 0 | 0 |
| Visibility | 6 | 0 | 0 |
| Steering | 4 | 0 | 0 |
| Air bags | 3 | 1 | 0 |
| Equipment | 3 | 0 | 0 |
| Service brakes | 3 | 1 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Low beam headlights failed during driving at night nearly causing a serious accident. Many lives could be affected because of this well known design issue not being addressed by gmc. There is a gmc recall for this same problem, but my vehicle isn't included.
Bulb sockets for reverse lights are corroded and rendered unusable due to placement and lack of protection from road grime. Caused lack of visibility at night while operating vehicle in reverse. ## vin failed ##
Tl contact owns a 2006 gmc envoy denali. While driving at 45 mph, the contact crashed into the rear of another vehicle. None of the air bags deployed. The contact suffered head injuries and a police report was filed.
Tl contact owns a 2006 gmc envoy denali. While attempting to decelerate from approximately 3-5 mph, the vehicle accelerated and struck the rear of another vehicle. Currently, the dealer has the vehicle and is unable to duplicate the failure. The engine size was unknown. The current and failure mileages were 10,266.
There was a vibration in the vehicle when the gas pedal was applied while traveling between 30 and 40 mph. The vehicle would also vibrate at any speed. It felt and sounded as if it needed to shift gears, as in a manual vehicle, but was in the wrong gear. It was involved in a crash in november 2006.
The fuel level sensor is malfunctioning giving me erroneous high and low readings. I noticed in august 2011, gm issued a special coverage for this exact problem, however it was only good for 10 years or 120,000 miles. My envoy is 11-1/2 years old, but only has approx. 87,500 miles on it.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Fuel system. Fuel smell, leaks, rough running, fuel-system codes.
- Exterior lighting. Headlamps, leveling, sensors and mounts after a frontal hit.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
Other models of this make
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.