AI DamageGMC Envoy Denali XL: problems, complaints, bulletins
Summary for the GMC Envoy Denali XL across 1 model years: 42 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
| Year | Owner complaints | involving a crash | Technical service bulletins (TSB) | YouTube repair videos |
|---|---|---|---|---|
| 2006 | 42 | 2 | 0 | 0 |
What fails most often
- 1 Fuel system 38% of all complaints
- 2 Electrical system 14% of all complaints
- 3 Engine 12% of all complaints
- 4 Powertrain 12% of all complaints
- 5 Service brakes 10% of all complaints
- 6 Exterior lighting 7% of all complaints
- 7 Fuel/propulsion system 7% of all complaints
- 8 Suspension 7% of all complaints
- Fuel system: 16 complaints (38% of all).
- Electrical system: 6 complaints (14% of all).
- Engine: 5 complaints (12% of all).
- Powertrain: 5 complaints (12% of all).
- Service brakes: 4 complaints (10% of all), 1 of them with a crash reported by the owner.
Symptoms owners describe
How many of the 42 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) |
|---|---|---|---|
| Fuel system | 16 | 0 | 0 |
| Electrical system | 6 | 0 | 0 |
| Engine | 5 | 0 | 0 |
| Powertrain | 5 | 0 | 0 |
| Service brakes | 4 | 1 | 0 |
| Exterior lighting | 3 | 0 | 0 |
| Fuel/propulsion system | 3 | 0 | 0 |
| Suspension | 3 | 0 | 0 |
| Vehicle speed control | 3 | 0 | 0 |
| Air bags | 2 | 1 | 0 |
| Electronic stability control | 2 | 0 | 0 |
| Structure | 2 | 1 | 0 |
| Visibility | 2 | 0 | 0 |
| Engine and cooling | 1 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
I was pulling up to park in a parking lot.I had total brake failure. The electronic safety features failed- and there was no stopping the envoy. I slid up the curb and into the building.
My wife was involved in an accident last night in which the vehicle, a 2006 gmc envoy denali was totaled, but neither air bad deployed.
We had gone to get dinner and ice cream after getting ice cream we back in the vehicle for it would not start. I called 911 no police ever showed nor would even stop to assist. After 2 1/2 hours, we contacted a church member to find out about a mechanic in the area that could possibly come check it out.
Low beam headlights and daylight driving lights shut down after a few minutes. Lights will come on after engine cools down but not before. Cannot drive after dark. High beams continue to operate.
2006 gmc envoy denali. Consumer writes in regards to dropped valve.
Last night I noticed at a stop light that I did not have low beam headlights on. Very disconcerting. After I made my turn to exit the busy street, the headlights did come back on. After researching the issue, it is a known issue with gm. In fact, many cars were selectively recalled on this issue. Mine was not.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
What to check before buying
- Fuel system. Fuel smell, leaks, rough running, fuel-system codes.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
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.