Vehicle Data Hub

2003 Chevrolet Trailblazer electrical system problems

Owners reported electrical system problems in 290 complaints for the 2003 Chevrolet Trailblazer, 25% of the complaints on file. It is the most reported problem area for this model year.

At a glance

Complaints
290 25% of this year's complaints
Typical mileage
80,000 miles 248 complaints with mileage
Crashes and fires
5 and 9
Injuries and deaths
1 and 2

Source: NHTSA owner complaints

When electrical system problems show up

Electrical system complaints by mileage, 2003 Chevrolet Trailblazer Complaints by odometer reading in 20,000-mile steps. The median is about 80,000 miles. 0k to 20k miles: 20 complaints 20k to 40k miles: 22 complaints 40k to 60k miles: 30 complaints 60k to 80k miles: 50 complaints 80k to 100k miles: 35 complaints 100k to 120k miles: 24 complaints 120k to 140k miles: 22 complaints 140k to 160k miles: 23 complaints 160k to 180k miles: 7 complaints 180k to 200k miles: 6 complaints 200k+ miles: 9 complaints 040k80k120k160k200k miles Typical: 80,000 miles
Based on 248 complaints that include mileage. 29% were reported before 60,000 miles. The amber marker shows the median: half of these complaints happened before that mileage.
View the numbers
MileageComplaints
0k to 20k miles20
20k to 40k miles22
40k to 60k miles30
60k to 80k miles50
80k to 100k miles35
100k to 120k miles24
120k to 140k miles22
140k to 160k miles23
160k to 180k miles7
180k to 200k miles6
200k+ miles9

What the data shows

Of the 248 electrical system complaints that report mileage, the median is about 80,000 miles, and 29% were reported before 60,000 miles.

These complaints mention 5 crashes, 9 fires, 1 injury, 2 deaths.

What owners wrote

While driving obout 25 miles my vehicle stopped without any warning.I put it back in park and tried to started nothing happen. Called the dealer they sent a towed truck and said it was the ignition switch and replaced it. I dont feel safe in this car any more.a car that stops suddenly while driving is very dangerous.

Reported at 31,956 miles, May 2005 Death

The back hatch latch will at times go for months, not locking with the inside lock & sometimes it even has to be shut 2-3 times for it to catch & latch shut. Then for some reason it will seem to be ok. Then it is right back to not locking & having to shut it hard 2-3 times to catch. When it will not lock with the inside lock, you can not even lock it with the key, the key will not turn completely so it is locked.

Reported at 25,879 miles, December 2008

Other problems reported for the 2003 Chevrolet Trailblazer

Electrical system problems in other years

Electrical system problems across all Chevrolet models