What breaks most · 2006 to 2007 model years
GMC Envoy Denali problems by year
Owners have filed 118 safety complaints with NHTSA about the GMC Envoy Denali across model years 2006 to 2007. Two years stand out: 2006 for electrical system complaints and 2007 for exterior lighting complaints.
- Years to check closely: 2006, 2007
- Complaints on file
- 1182006 to 2007, all trims
- Worst year
- 200684 complaints
- Crashes reported
- 51 fires · 1 injuries · 0 deaths
- Typical failure mileage
- 83kMedian where owners gave mileage
- Recall campaigns
- 0Across the years shown
Complaints by model year
Raw filings with NHTSA, not adjusted for how many were sold.
| Model year | Complaints | Crashes | Recalls | Most-reported component |
|---|---|---|---|---|
| 84 | 4 | 0 | Electrical system (19) | |
| 34 | 1 | 0 | Exterior lighting (14) |
What fails on the 2006 GMC Envoy Denali
| Component | Share of complaints | Filings | Crashes | Parts for this job |
|---|---|---|---|---|
| Electrical systemAlternators, starters and ignition | 23% |
19 | 0 | Shop all electrical system parts, not filtered to this vehicle |
| Fuel systemFuel pumps and injectors | 21% |
18 | 0 | Shop all fuel system parts, not filtered to this vehicle |
| EngineEngine gaskets and seals | 14% |
12 | 0 | Shop all engine parts, not filtered to this vehicle |
| SuspensionStruts, springs and control arms | 12% |
10 | 0 | Shop all suspension parts, not filtered to this vehicle |
| Exterior lightingHeadlights, tail lights and bulbs | 10% |
8 | 1 | Shop all exterior lighting parts, not filtered to this vehicle |
| Powertrain and transmissionTransmission parts | 10% |
8 | 1 | Shop all powertrain and transmission parts, not filtered to this vehicle |
| Stability controlABS and wheel speed sensors | 8% |
7 | 0 | Shop all stability control parts, not filtered to this vehicle |
| Fuel systemFuel pumps and injectors | 8% |
7 | 0 | Shop all fuel system parts, not filtered to this vehicle |
One complaint can name more than one component, so shares add to more than 100%. "Unknown or other" is NHTSA's uncategorized bucket and is shown but never ranked.
In owners' words
Complaint narratives as filed with NHTSA, trimmed for length.
-
I was driving 10 mph and the suv stalled put it in park to restart and it would not start had it towed to a ex GM dealer and they replaced the switch .
-
My vehicle's headlights have started to turn off for no reason, sometimes while driving and sometimes while waiting at a traffic light. They come on then without an intervention.
How to read this page
Every figure comes from the National Highway Traffic Safety Administration's public complaint database, which holds every safety-related defect complaint filed by owners since 1995. We refresh it monthly and count each complaint once per component it names. Data through September 6, 2026.
NHTSA only accepts safety-related complaints. Rattles, paint, infotainment bugs and other annoyances are under-reported here, so this page is a map of what fails in ways owners consider dangerous, not a full reliability score.
Counts are raw. Use the year-over-year shape and the component mix, not the absolute numbers. Where a component maps to parts we stock, the row links to that category filtered to the year you are viewing. Air bag and seat belt complaints link to the recall checker instead, because those repairs are almost always covered.
Common questions
Which GMC Envoy Denali years have the most problems?
By NHTSA complaint volume, 2006, 2007 carry the most filings on the GMC Envoy Denali. The 2006 alone has 84 complaints, led by electrical system.
What is the most common GMC Envoy Denali problem?
On the 2006 model year, the most-reported component is electrical system with 19 complaints. The table above lists the top components for every year.
At what mileage do GMC Envoy Denali problems start?
The median mileage at failure across all GMC Envoy Denali complaints that include mileage is about 83,000 miles. Older model years skew higher; the per-year figure is in the "at a glance" card.
Are these complaints verified?
No. NHTSA publishes complaints as submitted and does not investigate individual filings. Patterns across hundreds of complaints are meaningful; a single one is not.