2006 GMC Envoy Denali XL problems & reliability
42 owner complaints filed with NHTSA for the 2006 GMC Envoy Denali XL. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Fuel System, Gasoline → | 13 | 31% |
| Electrical System | 6 | 14% |
| Engine | 5 | 12% |
| Power Train | 5 | 12% |
| Exterior Lighting | 3 | 7% |
| Fuel/propulsion System | 3 | 7% |
| Fuel System, Other | 3 | 7% |
| Suspension | 3 | 7% |
| Vehicle Speed Control | 3 | 7% |
| Air Bags | 2 | 5% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
All 21 reported components →Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Among the 37 complaints that included a usable odometer reading, the median reported incident mileage was 67,000 miles (middle 50% between 50,000 and 110,000 miles).
Complaints by incident year
What owners report
“The initial time (3/14) it occurred, I was out of town with my family, embarrassed to say the least. However, mainly uncomfortable, tired, and frustrated because my 87 years old dad was stranded for hours as well as my 66 years old sister who is recovering from cancer. This problem was a serious problem because of our…”
Unknown OR Other · filed Apr 10, 2019
“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.”
Exterior Lighting · filed Jan 12, 2019
“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…”
Exterior Lighting · filed Aug 22, 2017
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Fuel Level Gauge System Failure
Defect Petition DP10001 · opened Jan 7, 2010 · closed May 23, 2011
Technical service bulletins
135 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2006 GMC Envoy Denali XL. The 10 most recent:
This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
PIP5601C · Service Bulletin/Repair Instructions · issued Jul 18, 2025
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
PIT5074R · Service Bulletin/Repair Instructions · issued May 30, 2025
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
PIT5074R · Service Bulletin/Repair Instructions · issued May 30, 2025
This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.
PIT5074R · Service Bulletin/Repair Instructions · issued May 30, 2025
This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. and Canada Dealers Only).
02-00-89-002X · Service Bulletin/Repair Instructions · issued Sep 9, 2024
This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized…
PIT3271P · Service Bulletin/Repair Instructions · issued Sep 6, 2024
Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to…
General Communication · Service Campaign · issued Aug 26, 2024
This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
01-06-01-011P · Service Bulletin/Repair Instructions · issued Aug 5, 2024
GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This…
24-NA-141 · Service Bulletin/Repair Instructions · issued Jul 24, 2024
This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how…
16-NA-383 · Service Bulletin/Repair Instructions · issued Jun 28, 2024
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
No NHTSA recall campaigns name the 2006 GMC Envoy Denali XL in our current data. Recalls may apply only to certain VIN ranges — always confirm with a VIN check.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2006 GMC Envoy Denali XL?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Among complaints with usable mileage, the median reported incident mileage was 67,000 miles. This does not predict when a particular vehicle will develop a problem.