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Electrical systemPart report

2006 Chevrolet Trailblazer EXT Electrical system Problems

Complaints
41about this part
Share
22%of 189 total for the year
Median mileage
70,858miles
Trend
StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.

NHTSA recorded 41 complaints about the electrical system of the 2006 Chevrolet Trailblazer EXT, 22% of the 189 complaints for this model year. Where a mileage was given, the median is 70,858 miles. 2 a fire, according to the filers.

Example complaints

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

“I am having this issue, for a few weeks now, the key gets locked in the ignition switch, will not turn off, it drain the battery the first day, now I have to disconnect battery, then when it finally locked it did not want to start, I could not start the vehicle for almost two days, and I cannot afford to take it to a mechanic right now.”

NHTSA complaint #10693122, filed 2015-03, 150,000 miles

“Fuel gauge has failed. At any given time, I am uncertain of the amount of fuel in my gas tank. I have contacted the dealer, they said they would diagnose the problem for $99, and the repair could cost $600 - $800. This is an obvious defect and should be replaced by GM as part of a recall. Since I could run out of gas at any time, it is obviously a safety issue.”

NHTSA complaint #10341973, filed 2010-07, 50,000 miles

“My fuel gauge on my 2006 chevy trailblazer slowly stopped to where it is no longer working at all. Also, suddenly today, both of my dim (low beam) head lights stopped working after having the battery replaced. Have checked fuses and they are ok. I have seen many complaints for both of these issues.”

NHTSA complaint #10369408, filed 2010-12, 78,000 miles

“Lights on the dash not working, and also the hot /cold lights on the heater console in the front just quit working, and only 43,000 miles it makes it complicated at night to see how much gas you have or how fast your going. Also the air/heat unit on the console for the back seat just quit working, so if I have passengers in the car with me, then they just freeze to death in the back seats, because there is no heat.”

NHTSA complaint #10377026, filed 2011-01, 39,000 miles

“I own a 2006 chevy Trailblazer Ext. On april 17th 2011 I was driving on highway 1-96 in michigan with my 2 young kids. Gas gague read 48 miles till empty when the vehicle suddenly stalled,it was out of gas. My kids and I had to walk along a major highway to nearest gas station to get gas. The truck ran fine before stalling out at 70 MPH. I am thankful there were no cars close behind me when the vehicle suddenly stalled.”

NHTSA complaint #10398544, filed 2011-05, 102,000 miles

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
20064122%
200414556%
20037725%
20021414%

Other parts of the 2006 Chevrolet Trailblazer EXT

Fuel system
129 complaintsExterior lighting
11 complaintsBody and structure
9 complaintsVisibility (wipers, defrost, mirrors)
8 complaintsTransmission and drivetrain
6 complaintsAir bags
4 complaintsEngine cooling
4 complaintsOther or unknown
4 complaintsBrakes
3 complaintsTires
3 complaintsEngine
2 complaintsLatches, locks and linkages
2 complaints

← All problems reported for the 2006 Chevrolet Trailblazer EXT

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