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really awful
Crashes / Fires:
0 / 1
Injuries / Deaths:
2 / 0
Average Mileage:
44,826 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 fuel system problems

fuel system problem

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2003 Chevrolet Trailblazer Owner Comments (Page 1 of 2)

problem #21

Mar 272009


  • 95,000 miles


2003 Trailblazer filler neck on fuel tank cracked, fuel tank is same part number as Trailblazer ext which is under special coverage for same problem, however regular model is not. Cost to replace fuel tank is $900 for oem new product.

- Madison, NJ, USA

problem #20

Feb 252008


  • 75,000 miles
The contact owns a 2003 Chevrolet Trailblazer. While driving approximately 40 mph on normal road conditions, the check engine warning indicator illuminated on the instrument panel and remained lit until the engine was turned off. In addition, the contact noticed a small amount of fuel leakage whenever the fuel tank was filled to capacity. The driver fills the fuel tank halfway in order to avoid leakage. The vehicle was taken to an authorized dealer for diagnostic testing and they stated that the failure was related to a hole in the fuel tank. The vehicle was taken to an independent mechanic for a second opinion and the same failure was confirmed. The vehicle has not been repaired. The failure mileage was 75,000 and current mileage was 107,000.

- Texas City, TX, USA

problem #19

Feb 232009


  • miles
Smell of gas. Took to mechanic and found the fuel tank is leaking where the filler tube goes into the tank causing the service engine light to come on.

- Huntersville, NC, USA

problem #18

Feb 102009


  • 79,500 miles


The contact owns a 2003 Chevrolet Trailblazer. While driving 20 mph, smoke appeared under the hood of the vehicle and entered through the defrost vents. The flames spread through the hood and then underneath the vehicle. The fire department extinguished the fire and stated that the fuel injector was the cause of the failure. The vehicle was towed to a repair shop and they stated that the vehicle was destroyed. A police report was filed. The contact wanted to know what caused the fire. There is a recall for the faulty fuel injector for the 2002 models, but the 2003 models were not included. The current and failure mileages were 79,500.

- Meadville , PA, USA

problem #17

Oct 232008


  • 68,000 miles
The contact owns a 2003 Chevrolet Trailblazer. The contact smelled a strong odor of gasoline. She took the vehicle to the dealer and they stated that they needed to diagnose the vehicle in order to locate the failure. The vehicle has not been repaired. The current and failure mileages were 68,000.

- Ellicottville, NY, USA

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problem #16

Oct 052008


  • 108,000 miles
2003 Trailblazer ls started leaking fuel from the top of the gas tank. Gas smell is present all the time. Fuel tank had to be replaced.

- Fulton, NY, USA

problem #15

Feb 032007


  • 75,000 miles


Have a 2003 Chevy trail Blazer and the gas tank is leaking from the top. I understand that there is a tsb # 05012 out on this issue. I had recently been at my dealer to get the check engine light checked. They said that I needed to replace the compressor right away. Well that was over a year ago and it is still working just fine..that was not the problem. Seems there are a lot of us out there who have this leaking gas tank problem.

- Westford, VT, USA

problem #14

Jul 242008

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 65,000 miles
The contact owns a 2003 Chevrolet Trailblazer. While driving 55 mph, the contact was notified of a fuel leak by a fellow driver. The vehicle was towed to the dealer and they stated that the gas tank was corroded. The gas tank was replaced at the cost of $1,000. The contact filed a report with the manufacturer. The current and failure mileages were 65,000. Updated 08/15/08 the fuel pump module was replaced because it had rusted out. Updated 08/15/08.

- Washington Township, NJ, USA

problem #13

Apr 262008

Trailblazer 6-cyl

  • 54,111 miles
Trailblazer ls 2003 has problems with code P0442 and checked other complaints from same vehicles (2002) issued in the past. Gas tank is leaking therefore a recall must include this models year too.

- El Paso, TX, USA

problem #12

Mar 092005

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 75,000 miles
I own a 2003 Chevy Trailblazer. I have been smelling gas fumes for the last couple of years and when I have taken to the local dealerships they stated that it was just "spillage and normal" for that type of car. My check engine light stays on and I have been told by autozone personnel that the "code" indicates some kind of emissions leak. When reviewing the open complaints, I noticed that there are many complaints very similar to what I have been experiencing. It is mostly when I fill up my gas tank over 1/2 a tank. I am afraid to fill it up full due to the heavy smell of gas.

- Round Rock, TX, USA

problem #11

Jun 302007

Trailblazer 6-cyl

  • Automatic transmission
  • 29,855 miles


The contact owns a 2003 Chevrolet Trailblazer. While driving approximately 30 mph, the contact smelled fuel inside the vehicle compartment. She exited the vehicle, cleaned the fuel tank, and discovered a leak. The vehicle has not been inspected by the dealer. The contact stated that the plastic neck leading into the fuel tank appeared to be cracked. The current and failure mileages were 29,855.

- Glendale, AZ, USA

problem #10

Jan 032007

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 97,000 miles
Had to have fuel sending unit replaced.the dealer stated the top was rusted, leaking fuel on the driveway.filed one complaint here already with no response now I saw in the paper there might be a recall.

- Batavia, NY, USA

problem #9

Feb 072006

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 53,000 miles
2003 Trailblazer - reduced engine power light present when started. Would accelerate to 15mph. Rattle or grinding noise when braking or driving over bumps. Drove to beaty Chevrolet knoxville tn tues, 2/7/06. Replaced throttle assembly & advised noise was from misaligned hood. Trailblazer picked up on fri, 2/10/06. Paid $200. Ext warranty ded. Gas empty stopped to fill up. While driving noticed fuel gauge past full mark, appeared to be pointing straight down. Noticed tachometer registered 6500 rpms. Called beaty Chevrolet. Service department closed. Next day fuel gauge appears correct. After a week refueled and noticed fuel gauge was incorrect again. Noticed strong gas odor when vehicle is started & vehicle smoking. Called to schedule repairs on 2/28/06. Was unable to make appointment rescheduled for tues 3/9/06. Beaty informed that it must be guage sensor and not related to previous repair work so another $200. Deductible would be due. They were unable to detect fuel odor nor smoking. I disagreed with the $200 charge due to vehicle being defective when I picked it up from the service department on the first visit. Beaty chev. Said they did not look at the tachometer nor fuel gauge when they service vehicles so they would not have known about the problem. Lol.. I called GM warranty and they would not waive the $200 and said the dealership would be responsible. I contacted the dealership again and they thought GM would waived because of the numerous problems with the guage sensors. However they would not admit that they did not check the vehicle when it was being repaired the first visit. I have read numerous complaints regarding reduced power throttle assembly, guage malfunctions, and grinding noise when braking and feel that GM should recall and reimburse the consumer for the repairs they have paid. Vehicle is still making grinding noise and now seems to lunge forward when brake is released. I need help and any advice you have to offer.

- Maynardville, TN, USA

problem #8

Mar 092006

Trailblazer 6-cyl

  • Automatic transmission
  • 25,000 miles
: the contact stated while driving at any speed, fuel fumes were in the passenger compartment. The dealership replaced the charcoal filter, fuel tank, and solenoid. These attempts have not repaired the problem.

- Mims, FL, USA

problem #7

Sep 252005

Trailblazer 6-cyl

  • Automatic transmission
  • 41,000 miles
I have a 03 TB 2wd I have noticed recently that it is not changing gears properly. The service engine light came on and the problem appeared three more times. Then the light went off and the problem went away. I took it to the dealer and they hooked it up to the "machine" and all they could find wrong was my O2 sensor. They said I needed to replace the gas sensor. This has nothing to do with the transmission.(this is what they said) they told me that they were not worried about it. I told them I was about to drive the car on a trip 1,000 miles one way. No problems they said. I called and questioned the dealership and he acted very surprised by this. Says he hasn't seen a "problem" with the transmission. One of my co-workers daughter also has a Trailblazer and hers has started to act up as well, and guess what it is the same thing as mine. I went on this web site and found out that this is a common problem with the TB. Is there anything that can be done about this madness? townhall-talk.edmunds.com/direct/view/.EF15323/65.

- Dallas, TX, USA

problem #6

Sep 182005


  • Automatic transmission
  • miles
When filling up my gas tank, it regularly overflows before the automatic shut off a the pump. This problem has occurred at various gas stations, and from research, found that this is common problem. This is extremely dangerous as gas will often spill on my clothes, shoes and the side of the vehicle. Not to mention the astronomical cost of gas these days! I can't afford this problem. How can it be fixed and if it's a common problem, why hasn't a recall been issued?

- Bronx, NY, USA

problem #5

Jan 172003


  • miles
Consumer was stopped by a police officer, who informed consumer that the tail lights were out. Vehicle was taken to the dealer for inspection, and mechanic determined that tail lights needed to be replaced. Also, vehicle stalled while driving at any speed. The vehicle would hesitate and skip upon acceleration, at stop signs. Traffic lights and while parking on inclines. Multiple components were replaced to correct the problem but they recurred. The radio became extremely hot while driving on long trips. The radio was replaced but the problem continued. The A/C unit failed intermittently because of a faulty A/C switch. The consumer mentioned fuel system problems.

- Stockbridge, GA, USA

problem #4

Mar 072004

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • miles
I attempted to fuel the vehicle. Every time I attempted, the pump would shut off as if an overflow were happening. This is not the first time. The dealer had advised me that it had fixed the problem when advised of it on a previous occasion. Usually happens when the engine hasn't been running for very long.

- Royersford, PA, USA

problem #3

Sep 292002

Trailblazer 6-cyl

  • Automatic transmission
  • 357 miles
Every time you fill up for gas. Gas overflows and spills on ground.

- Covington, GA, USA

problem #2

May 042003

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 205 miles
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. Other Trailblazer owners I have talked to in my area also experience this problem. The dealer has not only not been able to duplicate the problem at their local station but has no remedy for the multiple times we have brought the vehicle in for service.

- Temecula, CA, USA

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