Print this page Notes: Carrying the not-so-proud traditions of its 2002 predecessor, the 2003 has a handful of instrument panel malfunctions that can leave you guessing your speed, engine temperature or how much gas is left in the tank.


really awful
Crashes / Fires:
4 / 5
Injuries / Deaths:
0 / 0
Average Mileage:
79,771 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2003 Chevrolet Trailblazer electrical problems

electrical problem

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2003 Chevrolet Trailblazer Owner Comments (Page 8 of 8)

« Read the previous 20 complaints

problem #18

Jan 282005

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 29,000 miles


These are all of the problems fixed at the dealer with this truck so far: Rear sway bar links replaced, rear wiper blade came out of alignment 2 times, right rear door is warped, driver side rear molding is loose, back plate rubber seal out of alignment, windshield wiper tank replaced since it was leaking, A/C low pressure switch inop then replaced, windshield wiper module replaced because wipers would not turn off, sway bar links replaced for a second time. All of these have broken over the past 2 years and nine months and driver's side passenger window for that door is loose. Still is a noise in the front suspension that makes a hard knock onto the steering column but dealer denies hearing it.

- Yonkers, NY, USA

problem #17

Jan 042004

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 20,000 miles
Dashboard extremely hot. Fire in wiring 2X / 3X short in main fuse vehicle would not restart. Tow into dealer 3X. Dealer replaced fuse and wiring could not explain cause for problem or why persists. Dealer kept vehicle a week claimed to drive it in effort to cause problem but found vehicle buried in snow from a snowfall which occurred 3 days prior. Dealer claimed ignorance to recurring problem of this type w/this vehicle. *

- Center Moriches , NY, USA

problem #16

Feb 252005


  • Automatic transmission
  • miles
Chevrolet Trailblazer 2003 automatic, having problem shifting. The consumer stated the vehicle hesitated for 5 seconds, then slowly accelerated to the speed the consumer needed. The battery died due to a module problem.

- Carmichael, CA, USA

problem #15

Sep 142004


  • Automatic transmission
  • 22,000 miles


The vehicle shuts down while the vehicle is being driven. Vehicle has been serviced and duplicated twice. Computer chip was replaced twice, the harness replaced twice, and throttle body was replaced twice. Currently, vehicle is at the dealer....

- Lauderhill, FL, USA

problem #14

Sep 162004

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 27,000 miles
This vehicle has had multiple failures in the last 12 months. Left side brake light replaced two times before brake light circuit board was replaced. Right side headlight failure, bulb replaced. Ac quit working. Two trips to the dealer to a find compressor failure. The compressor was replaced. Latest and worst failure was a total electrical failure. Only the items controlled by the rap were functional. The vehicle quit running in the middle of the road. Could not be restarted and the transmission could not be moved from the park position. Vehicle had to be left in the middle of the road and abandon for safety of the passengers. This was also a hazard to other vehicles. If there is an override to get the vehicle out of gear it should be in the owners manual. The vehicle had to be dragged up on the two truck. Vehicle is at the dealer and no resolution to the problem has been found.

- Olathe, KS, USA

problem #13

May 202003


  • Automatic transmission
  • miles
The consumer stated the rear tail light were inoperative. The vehicle was taken to the dealer for inspection and the mechanic informed the consumer that the tail lights needed to be replaced. The problem still continued.

- Pittsburgh, PA, USA

problem #12

Jun 252004


  • miles


While driving consumer noticed that service four wheel drive indicator was flashing. Technician upgraded computer, and replaced transfer case.

- Sturgeon Bay, WI, USA

problem #11

May 012004

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 28,000 miles
Power to the rear, or 5th. Door shorts in and out at will, you will never know when the vehicle is securely locked. The rap feature, reserve auxillary power shorts in and out. The rear or 5th. Door windshield wiper shorts in and out, causing you to not be able to see behind you.

- Hattiesburg, MS, USA

problem #10

Jan 282004

Trailblazer 4WD 6-cyl

  • 9,000 miles
I have had the exact problems as stated in 10047425. Windshield wipers went out completely on a rainy day, module replaced, A/C broke on a hot day-fixed, power steering assist stopped working completely making driving the vehicle nearly impossible, vehicle started on reserve power when temp hit -6 degrees, heater motor stopped working completely the next day -10 degrees. Basically this vehicle doesn't like changes in weather.

- Rochester, MN, USA

problem #9

Dec 112003

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 19,500 miles
I experienced a problem with my trail Blazer about a month ago. The problem was annunciated by the engine light and reduced power. The first occurrence was while I was merging at a toll plaza in Chicago that cleared after stopping the vehicle and restarting. I experienced a problem with my trail Blazer about a month ago. The problem was annunciated by the engine light and reduced power. Several weeks later the second time the problem reoccurred was on a secondary road and third time while making a left at an intersection and the engine light did not clear. The dealer repaired the vehicle after replacing the accelerator unit, which I understand replaced a simple accelerator cable. The concern is the projected failure of a critical part of the vehicle failing while merging or making left turns in front of on coming traffic and the significant risk to injury to the driver and passengers inside the vehicle. If GM engineer can design an electronic component to replace a simple accelerator cable, I assume the component standards would equal the same reliability as the cable. Response by Chevrolet: Good evening! thank you for contacting the Chevrolet customer assistance center. We sincerely apologize for the engine light and reduced power concerns you were experiencing on your 2003 Chevrolet Trailblazer. In addition, we also deeply regret to hear the misfortunate incidents you experienced while the concern was being resolved. We, at Chevrolet, understand that of all the factors involved in customer satisfaction, safety is of primary concern. Please be assured that Chevrolet works diligently to provide a high quality product that we hope will exceed your expectations. However, when dealing with a mechanical part, there is always a chance that something might fail. That is something we cannot speculate on; and why we do provide a warranty on that item of 12 months, or 12,000 miles, whichever comes first.

- Lakewood, OK, USA

problem #8

Sep 102003

Trailblazer 6-cyl

  • Automatic transmission
  • miles


Owned 03 Trailblazer for 4 months and has given me electrical & mechanical problems. I had one problem since I first bought this vehicle and now I have 13 things that are a danger to me and my family. Ac turns on by itself whether car is off or on. Ac has turned on while I was driving frightening the hell out of me causing me to almost lose control of the wheel. Ac, engine lacks horse power, hand brake, hazard lights, lights turn off, mirrors move by themselves, car boggs as if it wants to turn off, while driving steering wheel moves by itself, gas gauge has read low fuel when gas is full. I am terrified the car will give out with my child and I in it.I have tried to have vehicle repaired numerous times and still dealer can't seem to duplicate the problem. The vehicle is a hazard to me and my family and to all those who own one. Need the problem to be fixed before any tragedies occur.

- Los Angeles, CA, USA

problem #7

Oct 232003

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 11,600 miles
Lost total electrical power/stalled while idling at first, then when going about 35 mph. Dealer "reset" computer according to a service bulletin which says this is a known problem. Service bulletin says it is occurs when module on powertrain checks evap system, there is some type of a "glitch" which shuts everything down. According to GM, there is no fix yet for the problem. My concern is driving on the highway, this could happen and cause crash because there is no control of vehicle. If it happens during night, other drivers will not see me because all lights go out, power steering and power brakes are lost. Resetting the computer did not help as it happened within 2 days again. Please help asap because I'm afraid to drive this vehicle!

- Bryan, OH, USA

problem #6

Dec 022003

(reported on)

Trailblazer 4WD 8-cyl

  • Automatic transmission
  • 6 miles
When entering or exiting the vehicle consumer is experiencing sparks by some electrical surge. The electrical surge occurs when metal is touched. Consumer noted this is unpleasant and dangerous when at a gas station.

- Rochester, NY, USA

problem #5

Sep 212003

Trailblazer 8-cyl

  • Automatic transmission
  • miles
Brake lights failed intermittently. The consumer was involved in an accident because of the faulty brake lights. The dealer determined that the computer switch was the cause of the problem.

- Gonzales, LA, USA

problem #4

Sep 152003

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 17,800 miles
On two occasions when turning the vehicle off from running - there was a loud buzz on the radio and then the clock reset like an electrical short occurred.

- Columbia, MO, USA

problem #3

Jul 092003

Trailblazer 6-cyl

  • Automatic transmission
  • miles
Tail light is continuously burning out without warning. Cause unknown. The right front headlight burned out on 07/17/03. On the way to the dealer to get the headlight replaced, the check engine light illuminated. The consumer was advised that the engine light was covered under recall and replaced the circuit board. Consumer questioned whether the rear safety hazard would be repaired if Chevrolet is just changing bulbs without fixing the circuit board.

- Sterling, VA, USA

problem #2

Mar 142003


  • Automatic transmission
  • 5,000 miles
The vehicle experienced an electrical system failure. Which resulted in the gas light coming on, then the vehicle dying out. Gas mileage showed less than it should had been. The security system light failed.. the check engine light illuminated on numerous occasions.

- Mandeville, LA, USA

problem #1

Jun 022003

Trailblazer 6-cyl

  • Automatic transmission
  • 6,000 miles
While drivning the horn and door light would come on intermittently.

- Denver, CO, USA

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