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BrakesPart report

2003 Chevrolet Trailblazer EXT Brakes Problems

Complaints
13about this part
Share
4%of 313 total for the year
Median mileage
52,350miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 13 complaints about the brakes of the 2003 Chevrolet Trailblazer EXT, 4% of the 313 complaints for this model year. Where a mileage was given, the median is 52,350 miles. 1 recall campaign on record is filed under a similar system.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Driving approx 70mph on the highway, suddenly heard a whap whap whap noise coming from the back of the vehicle. I slowed down, and the sound diminished. Arriving home, I found that the center brake light assembly had come loose at both ends. The two center connections luckily held, or else the piece would have come off the car and possibly caused an accident. I have read that other trailblazers have had the same issue.”

NHTSA complaint #10475663, filed 2012-09, 139,000 miles

“The ABS light has come on and then it would work sometimes and not other times. Now it never works. Now that its winter I'm sliding at stop signs that aren't even that slippery. The actuators in the heating and cooling are not working properly. All summer I had heat blowing all the time and suddenly there would be nothing. Now it's cold air all the time. Makes my windows fog up and not defrost. I have done the reset procedure and hear things moving but it doesn't fix it. The blower in the ball seat and third row is hit or miss for even working at all.”

NHTSA complaint #11155988, filed 2018-12, 120,600 miles

“My wife and five children traveling on I-94 e and exited the freeway at the 12 mile exit in roseville mi. My wife attempted to brake as they approached the red traffic signal on the 12 mile exit ramp and the brake pedal went all the way to the floor without warning. She was unable to stop the vehicle and proceeded through the red light narrowly missing a high speed collision with both east and west bound traffic on 12-mile road. She continued through the intersection on the red light and was able to stop the SUV several hundred yards down the service drive. …”

NHTSA complaint #10761751, filed 2015-09, 88,000 miles

“My 2003 chevy trailblazer has a third brake light across the top hatch .while driving down a busy highway it was flying like a wing on the back of my vehicle luckily DOT falling completely off but when I stopped it came crashing down onto my window of hatch luckily not breaking all I could do is break it completely off so it would not fly into someone's windshield behind me I work with a lady with the same make and model and hers flew right off her latch causing it to smash luckily no one was behind her. …”

NHTSA complaint #10202853, filed 2007-09, 71,700 miles

“Without any squealing in the days and weeks before the brake failure, as I would expect from deteriorating brakes, the brakes on my 2003 Trailblazer Ext failed. Fortunately, the metal to metal sound heard on feb. 4, 2005, alerted my wife to call our local chevy service center. At the time of the failure, this car had 29,000 miles on it. Not only did the dealer find the left front brake digging into the rotor surface, but they found the rear brakes worn low and the emergency brake portion of the rotor rotted. At 29,000 miles, total brake overhaul should not occur. …”

NHTSA complaint #10126150, filed 2005-06, 29,000 miles

Related recalls

Related service bulletins

Brakes: other model years

YearComplaintsShare of year
200632%
200410%
2003134%

Other parts of the 2003 Chevrolet Trailblazer EXT

Fuel system
89 complaints
Electrical system
77 complaints
Transmission and drivetrain
49 complaints
Visibility (wipers, defrost, mirrors)
26 complaints
Exterior lighting
23 complaints
Body and structure
20 complaints
Engine cooling
16 complaints
Latches, locks and linkages
13 complaints
Suspension
12 complaints
Other or unknown
7 complaints
Vehicle speed control
7 complaints
Steering
6 complaints

← All problems reported for the 2003 Chevrolet Trailblazer EXT

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology