YearToAvoid

2005 Chevrolet Trailblazer Ext 370 Electrical System Problems

NHTSA has 112 owner complaints about electrical problems in the 2005 Chevrolet Trailblazer Ext 370, 47% of all 237 complaints for this model year. That is the highest electrical complaint count among 2 Trailblazer Ext 370 model years. These complaints report 1 crash and 1 fire. Median mileage at failure: 74,067 miles.

Electrical System complaints
112
47% of 237 complaints
All complaints this year
237
Crashes reported
1
Fires reported
1
Injuries reported
0
Median mileage
74,067 mi
Related recalls
0

When 2005 Chevrolet Trailblazer Ext 370 electrical complaints were filed

First complaint Jul 3, 2006, latest Oct 12, 2018.

2005 Chevrolet Trailblazer Ext 370 electrical system complaints: complaints filed per quarter122006 Q32008 Q12009 Q22010 Q42012 Q12013 Q42015 Q42018 Q4
112 complaints filed with NHTSA from 2006 Q3 to 2018 Q4; peak 2010 Q1 (12).

Electrical System recalls for the 2005 Chevrolet Trailblazer Ext 370

No safety recalls on record for this model year.

Electrical System complaints by Trailblazer Ext 370 model year

Raw complaint counts per model year; newer years have had less time to accumulate complaints.

  1. 2005112 (47%)
  2. 20068 (50%)

Frequently asked questions

Does the 2005 Chevrolet Trailblazer Ext 370 have electrical problems?
NHTSA has 112 owner complaints about the electrical in the 2005 Chevrolet Trailblazer Ext 370, 47% of all complaints for this model year, including 1 that report a crash. Median mileage at failure is 74,067 miles.
Which Chevrolet Trailblazer Ext 370 year has the most electrical complaints?
The 2005 Chevrolet Trailblazer Ext 370 has the most electrical complaints (112), compared with 112 for the 2005.
Is there a electrical recall for the 2005 Chevrolet Trailblazer Ext 370?
No NHTSA recall campaign for the 2005 Chevrolet Trailblazer Ext 370 is classified under electrical system. Complaints alone do not trigger a recall; check the full recall list and your VIN.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.