Vehicle Data Hub

2003 Chevrolet Trailblazer fuel system problems

188 complaints about fuel system have been filed for the 2003 Chevrolet Trailblazer, which is 16% of all its NHTSA complaints. It is the 2nd most reported problem area for this model year.

At a glance

Complaints
188 16% of this year's complaints
Typical mileage
89,000 miles 148 complaints with mileage
Crashes and fires
1 and 3
Injuries and deaths
2 and 0

Source: NHTSA owner complaints

When fuel system problems show up

Fuel system complaints by mileage, 2003 Chevrolet Trailblazer Complaints by odometer reading in 20,000-mile steps. The median is about 89,000 miles. 0k to 20k miles: 16 complaints 20k to 40k miles: 7 complaints 40k to 60k miles: 20 complaints 60k to 80k miles: 23 complaints 80k to 100k miles: 23 complaints 100k to 120k miles: 17 complaints 120k to 140k miles: 12 complaints 140k to 160k miles: 9 complaints 160k to 180k miles: 9 complaints 180k to 200k miles: 9 complaints 200k+ miles: 3 complaints 040k80k120k160k200k miles Typical: 89,000 miles
Based on 148 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 miles16
20k to 40k miles7
40k to 60k miles20
60k to 80k miles23
80k to 100k miles23
100k to 120k miles17
120k to 140k miles12
140k to 160k miles9
160k to 180k miles9
180k to 200k miles9
200k+ miles3

What the data shows

Of the 148 fuel system complaints that report mileage, the median is about 89,000 miles, and 29% were reported before 60,000 miles.

These complaints mention 1 crash, 3 fires, 2 injuries.

What owners wrote

When filling the fuel tank on 2003 trailblazers with fuel pump equipped with "accordion" neck sleeves, fuel has the possibility of back flushing out the top of the tank neck. I experience this on multiple gas stations here in california with multiple 2003 trailblazers. About 1 cup of gasoline flows over the intake and on to the car and ground causing a serious hazard. The back flow spill does not seem to occur on every type of fuel pump, but only on those equipped with certain sleeves over the nozzle.

Reported at 205 miles, May 2003 Injury

The area around the fuel tank filler neck, where it connects to the fuel tank, is leaking. This is a common issue with 2002 - 2003 chevrolet trailblazer ext's and GMC envoy xl's. It is covered under general motors special coverage program #14423 for 15 years or 150,000 miles. My trailblazer now has 180,000 miles on it and I have been smelling gasoline fumes in the area of the filler neck for a long time, but I didn't know where it was coming from.

Reported at 140,000 miles, February 2015

Other problems reported for the 2003 Chevrolet Trailblazer

Fuel system problems in other years

Fuel system problems across all Chevrolet models