2003 Chevrolet Trailblazer Ext transmission problems
The 2003 Chevrolet Trailblazer Ext has 53 transmission complaints filed with NHTSA — 13% of the year's total, and up sharply from the prior model year.
53
Transmission complaints
13%
Share of year
1
Crash-involved
0
Related recalls
Transmission complaints by year
What owners report
“WHILE PUTTING THE VEHICLE IN 4-WHEEL DRIVE IT BEGAN TO ACCELERATE. VEHICLE RAN INTO A GUARD RAIL AND ROLLED DOWN INTO A DITCH. OWNER CONTACTED THE DEALER, WHO SAID IT WAS THE FAULT OF THE DRIVER. LATER, DEALER CONTACTED THE OWNER, AND INFORMED HIM THAT THE 4-WHEEL DRIVE KEY WAS BROKEN. *AK *BF *NM”
Common questions
How many transmission complaints does the 2003 Chevrolet Trailblazer Ext have?
NHTSA has 53 complaints about the 2003 Chevrolet Trailblazer Ext transmission — 13% of all complaints filed for that model year.
Related
Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.
Compiled by Sharon Ben-Moshe, Founder.