YearToAvoid

2006 GMC Envoy Denali Reliability Data: Problems & Recalls

No verdict The 2006 GMC Envoy Denali has 84 NHTSA complaints, giving it a complaint index of 100 and rank 1 of 2 model years, meaning it has the higher complaint volume of the two. No recalls are on file for this year, and the top problem area is the Fuel System.

Based on NHTSA complaints per model-year, not a reliability rating. Methodology

YearToAvoid Scorecard

Complaint Index
100/100
#1 of 2 Envoy Denali years
Verdict
No verdict
vs. other years of this model
Complaints
84
unique NHTSA reports
Recalls
0
distinct NHTSA campaigns
Crashes
4
reported in complaints
Fires
1
Injuries
1
Top issue
Fuel System
Best nearby year
—
no alternative with data

Top 2006 GMC Envoy Denali problems

Share of this year’s NHTSA complaints by component group. Groups with 15+ complaints have their own page.

  1. Fuel System27 (32%)
  2. Electrical System26 (31%)
  3. Engine19 (23%)
  4. Suspension, Wheels & Tires11 (13%)
  5. Brakes8 (10%)
  6. Transmission & Powertrain8 (10%)
  7. Other7 (8%)
  8. Steering3 (4%)
  9. Visibility & Wipers3 (4%)
  10. Airbags2 (2%)

A complaint can list more than one component, so shares add up to more than 100%. Shares are % of complaints.

What owners report

  • Vehicles vibrate or lurch when the gas pedal is applied between 30 and 40 mph, feeling like the transmission is stuck in the wrong gear.
  • The transmission shifts abruptly into first gear right after the vehicle stops, jolting occupants as if hit from behind.
  • A constant squeal comes from the rear that only stops when the vehicle is taken out of overdrive, with dealers unable to fix it.
  • Owners report the engine stalling unexpectedly at idle and while driving, sometimes preceded by the check engine light.
  • Reverse light bulb sockets corrode from road grime, cutting off visibility when backing up at night.
  • Electrical shorts in the driver door panel have caused smoke and, in one case, a fire.
2006 GMC Envoy Denali complaints: complaints filed per quarter102006 Q12009 Q22011 Q22012 Q42014 Q22015 Q42017 Q1
84 complaints filed with NHTSA from 2006 Q1 to 2018 Q3; peak 2011 Q3 (10).

2006 GMC Envoy Denali recalls

No safety recalls on record for this model year.

2006 compared with other Envoy Denali years

Complaint Index by model year (0 = fewest issues, 100 = most)025507510020062007
Complaint Index: 0 = fewest issues, 100 = most, relative to other years of this model. Avoid Caution Good Best
YearVerdictIndexComplaintsRecallsMPG
2006No verdict100840—
2007No verdict0340—

All GMC Envoy Denali years: best and worst →

Frequently asked questions

Is the 2006 GMC Envoy Denali reliable?
NHTSA data shows 84 complaints for the 2006 Envoy Denali, the higher of the two model years with data, with Fuel System and Electrical System issues making up 32% and 31% of complaints respectively.
Does the 2006 GMC Envoy Denali have any recalls?
NHTSA lists zero recalls for the 2006 Envoy Denali.
What is the most common problem with the 2006 GMC Envoy Denali?
Fuel System complaints are the most common, accounting for 27 of 84 complaints (32%), with a median failure mileage of 60,000 miles.
How does the 2006 Envoy Denali compare to the 2007 model?
The 2006 model has 84 complaints and a complaint index of 100, versus 34 complaints and an index of 0 for the 2007 model, making 2006 the worse of the two years by complaint volume.
Did the 2006 GMC Envoy Denali have transmission problems?
Yes, owners reported the transmission shifting abruptly into first gear after stopping and a persistent squeal from the rear, with Transmission & Powertrain complaints showing a median failure mileage of 24,039.5 miles.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.