AI Damage2006 GMC Envoy Denali XL: common problems
Owners of the 2006 GMC Envoy Denali XL filed 42 complaints with NHTSA, most often about fuel system and electrical system. Details by component below, with sources.
Key figures
- Owner complaints
- 42
- involving a crash
- 2
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.
Takata recall I have had to make many repairs on this vehicle. However, now the lifters in the engine collapsed. The vehicle only has about 87,000 miles on it. This is unacceptable. There have been many complaints about this vehicle and the lifters collapsing.
While driving, in pitch black darkness on 6/10/2016 around 1:00 am, my headlights suddenly went off. The only way I could obtain lights was using the high beams. Low beams do not work and high beam only works in manual on/off mode. We checked the lamps and fuses. All are in excellent condition.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 5,819 of 36,656 model years in the NHTSA data (top 16% most complained about).
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.
Questions and answers
What are the most common problems with the 2006 GMC Envoy Denali XL?
Owner complaints to NHTSA most often mention: fuel system, electrical system, engine. Total complaints: 42. The most frequent symptoms in complaint texts: fuel system, fuel smell (26%), warning lights, check engine (26%), headlights and tail lights (7%).
How many service bulletins (TSB) were issued for the 2006 GMC Envoy Denali XL?
NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2006 GMC Envoy Denali XL from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2006 models
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.