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Transmission and drivetrainPart report

2006 Chevrolet Trailblazer EXT Transmission and drivetrain Problems

Complaints
6about this part
Share
3%of 189 total for the year
Median mileage
88,081miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 6 complaints about the transmission and drivetrain of the 2006 Chevrolet Trailblazer EXT, 3% of the 189 complaints for this model year. Where a mileage was given, the median is 88,081 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

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

“4wd quit working and was told by the dealership today I needed to replace the transfer case for over $2,000. Already reported the fuel sensor quit working. Told by a phone rep for NHTSA it could take at least a year to investigate and was given a phone number for the ftc. My car has under 44,000 and when the transfer case went it there was a smell of smoke.”

NHTSA complaint #10295373, filed 2009-12, 43,600 miles

“I was driving home from work in my 2006 Trailblazer Ext. After stopping at the stop sign in front of my home, I pressed the center button on the overhead console to open the garage door and proceeded to turn right as to position the vehicle to allow for backing-up onto my driveway and into the right parking half of my garage. But as I shifted the trailblazer into reverse, I began to press the accelerator pedal, but the vehicle would not move. …”

NHTSA complaint #10416604, filed 2011-08, 73,162 miles

“Upon turning the four-wheel drive engaged unknown to me at the time because the selector switch did not indicate this.the truck became difficult if not impossible to turn at low speeds as this vehicle does not have a limited slip differential in the four wheel drive mode. While turning the tires on the outside of the turn make a larger radius than do the inner tires.without any slip the vehicle tries to maintain the same linear footage travel by each tire. This causes the tires to bind lock up and skid during turns. …”

NHTSA complaint #10587543, filed 2014-05, 120,000 miles

“While driving , the vehicle would shift from 2wheel drive down to 4 low, causing a very rapid decrease in speed and loss of control over vehicle, depending on driving speeds and rd conditions this could cause a very dangerous accident. I have had the vehicle into the dealer 4 times in the last month and they have replaced , 4wheel drive switch on dash, encoder motor on transfer case and reprogrammed stabiltrac, vehicle is still at dealer and trying to solve problem. Dealer has been very polite and understanding during this entire process.”

NHTSA complaint #10217485, filed 2008-02, 22,430 miles

Related service bulletins

Transmission and drivetrain: other model years

YearComplaintsShare of year
200663%
2004177%
20034916%
20022020%

Other parts of the 2006 Chevrolet Trailblazer EXT

Fuel system
129 complaintsElectrical system
41 complaintsExterior lighting
11 complaintsBody and structure
9 complaintsVisibility (wipers, defrost, mirrors)
8 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 31, 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