2006 GMC Envoy Denali

Typical pattern

5.8% of complaints about the 2006 GMC Envoy Denali came in the first year, which is unremarkable for a 2006 vehicle — around the middle of the 250 model-years on record. The median complaint arrives at 6.8 yr in service. The most-reported system is electrical system (19 complaints), typically at 8.6 yr or about 80,945 miles.

Complaints: 121
Median age at failure: 6.8 yr
Median mileage: 81,000 n=100
Crash / fire / tow: 5% of reports
Safety recalls: 0

In owners’ own words

Electrical system 360 mi 7 mo in service

WHEN BRAKING THE CAR FEELS LIKE IT WILL STALL OUT @ AROUND 20 MPH. BROUGHT BACK TO DEALERSHIP. COMPUTER CHIP ISSUE THAT DOES NOT HAVE A SOLUTION YET. *NM

Electrical system 8,700 mi 1.3 yr in service

THE CHECK ENGINE LIGHT CAME ON AND FOLLOWED SHORTLY BY THE ENGINE QUITTING, 1 TIME AT IDLE, 2 TIMES IN WHILE UNDER WAY IN TRAFFIC. *JB

Electrical system 41,000 mi 4.2 yr in service

FUEL GAUGE IS MOVING FROM FULL TO EMPTY WHEN THE VEHICLE IS FULL. DEALER IS SAYING IT IS A COMMON PROBLEM, $800 FOR REPAIR IS THE GOING RATE. I HAVE FOUND MAY MORE PEOPLE WITH THE SAME PROBLEM. HTTP://WWW.TOPIX.COM/FORUM/AUTOS/CHEVROLET-TRAILBLAZER/TH8JI6TEPO3VRJI3D . *TR

Fuel system 41,000 mi 4.2 yr in service

FUEL GAUGE IS MOVING FROM FULL TO EMPTY WHEN THE VEHICLE IS FULL. DEALER IS SAYING IT IS A COMMON PROBLEM, $800 FOR REPAIR IS THE GOING RATE. I HAVE FOUND MAY MORE PEOPLE WITH THE SAME PROBLEM. HTTP://WWW.TOPIX.COM/FORUM/AUTOS/CHEVROLET-TRAILBLAZER/TH8JI6TEPO3VRJI3D . *TR

How to read this

This is what owners reported, not a reliability rating. People file with NHTSA about alarming failures, not routine ones, and complaint volume tracks how many cars were sold.
Failure ages come from the incident date on each complaint, populated on about 83% of records. Mileage is shown where reported — NHTSA’s 2021 system change cut mileage capture to roughly 15%, so it thins out sharply after MY2020.
Every rank compares this vehicle only against others of the same model year. A 2025 car has not had time to accumulate five-year failures, so comparing early-failure share across years is meaningless.
Fourteen make-months distorted by media storms and mass recalls — Toyota in February 2010 ran 11× normal volume across 33 models — are excluded.
Recalls are manufacturer actions and authoritative; complaints are not. A recall listed here may already have been performed on any individual car. Check a specific VIN at nhtsa.gov/recalls.

2006 GMC Envoy Denali

When each system is reported — middle 50% of complaints

In owners’ own words

How to read this