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Electrical systemPart report

2006 GMC Envoy Denali Electrical system Problems

Complaints
19about this part
Share
23%of 84 total for the year
Median mileage
80,945miles
Trend
StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.

NHTSA recorded 19 complaints about the electrical system of the 2006 GMC Envoy Denali, 23% of the 84 complaints for this model year. Where a mileage was given, the median is 80,945 miles. 1 a fire, according to the filers.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“I have had 4 battery and lights flash and hard draw on alt have replaced alt with new delco new lights still flash draws lights down. Been to dealer dealer from2008 to now and they tell me I don't drive very need to drive more care has 40 000 miles they can't find anything wrong. You can drive or be setting running still does this it pull down on engine pulls alt goes to12 volts then goes on”

NHTSA complaint #10839933, filed 2016-03, 20,000 miles

“I was driving on the freeway at 65-70 MPH. The engine lugged a little like it was running out of gas but the tank was half full. The engine resumed running at full speed. A few seconds later the engine shut off. I was able to coast long enough to pull off the freeway. But without power steering and brakes this was not an easy task. Once the car stopped I turned off the ignition and put the car in park. I tried to restart the car but nothing happened. …”

NHTSA complaint #10649549, filed 2014-10, 45,435 miles

“Gm ignition switch problem with suvs!!!!!!! Was driving about 45 MPH with our grandkids and all power was lost. No power steering, no brakes. Radio and electric windows still worked after stopping (luckily safely). Service repair reported that ignition switch circuit that controls the engine shorted out turning off engine at 45 MPH. This is the 5th ignition switch on this vehicle. Gm has a larger ignition switch problem than they are acknowledging. Luckily we just got off the highway going 70 MPH or we would have crashed. …”

NHTSA complaint #10606771, filed 2014-06, 110,000 miles

“Gm has a recall out for Envoy Denali driver door panels shorting out causing smoke and possible fire. This is a fact. My door did start on fire and thank god I was still in the store when it happened. Brought the truck to the dealer, dealer says yes this is a recall issue, GM has the dealer hold my truck for three weeks while they decide if they are going to pay for the repairs to the recall that did start on fire. After three weeks the third party representing GM calls and says no GM is refusing to pay for the fire damage. ???? …”

NHTSA complaint #10533231, filed 2013-08, 80,945 miles

“Purchased this vehicle in october of 2013 and now the drivers door electrical systems works intermittently. I contacted Gmc because this was a recall in june of 2013. Gmc told me the work was already done so to have this problem fixed I would have to pay for it out of pocket. The problem I have is they didn't fix the problem they only masked it with a cheap piece of plastic. If a vehicle has a recall and it is not fixed correctly does the company legally have to play to fix the part again because one of their dealerships was negligent in fixing the recall correctly?”

NHTSA complaint #10579244, filed 2014-04, 153,000 miles

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2007824%
20061923%

Other parts of the 2006 GMC Envoy Denali

Fuel system
27 complaints
Engine
12 complaints
Suspension
10 complaints
Exterior lighting
8 complaints
Transmission and drivetrain
8 complaints
Electronic stability control
7 complaints
Engine cooling
4 complaints
Other or unknown
4 complaints
Visibility (wipers, defrost, mirrors)
4 complaints
Equipment
3 complaints
Steering
3 complaints
Vehicle speed control
3 complaints

← All problems reported for the 2006 GMC Envoy Denali

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology