2004 Chevrolet Trailblazer Ext engine problems
The 2004 Chevrolet Trailblazer Ext has 21 engine complaints filed with NHTSA — 7% of the year's total, and roughly flat versus the prior model year.
21
Engine complaints
7%
Share of year
0
Crash-involved
0
Related recalls
Engine complaints by year
What owners report
“WHILE DRIVING ON THE HIGHWAY THERE WAS A BOOM UNDER THE HOOD. TWO MINUTES LATER THE CAR STARTED DECREASING POWER AND I HAD TO PULL OVER. BEFORE I COULD GET OUT TO LIFT THE HOOD, FIRE WAS SHOOTING FROM UNDER NEATH. *TR”
Common questions
How many engine complaints does the 2004 Chevrolet Trailblazer Ext have?
NHTSA has 21 complaints about the 2004 Chevrolet Trailblazer Ext engine — 7% 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.