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.


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
68,240 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

problem #12

Jan 092013

Trailblazer 6-cyl

  • 168,900 miles


Leaking from the fuel pump flanges, caused fuel lines to corrode and leak onto gas tank. Gas smell coming from rear of vehicle. This was a great fire hazard as a driver of this vehicle and safety of others! PE 07013 cost to repair $763.76.

- Algonac, MI, USA

problem #11

Mar 052010


  • 60,000 miles
The contact owns a 2003 Chevrolet Trailblazer. The contact stated that the service engine light was illuminated when he started the vehicle. Two weeks after noticing the check engine light, he smelled strong gas fumes. The vehicle was taken to an authorized dealership where the dealer dropped the fuel tank and found all types of fuel spraying from it. The dealer informed the contact that the failure was caused by the fuel pump. The contact called the manufacturer who told him that someone would contact him within two business days to discuss the expenses of the repair. The vehicle had not been repaired when the complaint was filed. The VIN was unavailable. The current and failure mileages were approximately 60,000.

- Haggertown, IN, USA

problem #10

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 #9

Mar 182008

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 73,500 miles


Fuel leak from the fuel pump module in my 2003 Chevrolet Trailblazer. I recently had the fuel tank replaced because of a vapor leak causing the check engine warning light to activate. When I picked up the vehicle I detected a strong gasoline smell and was just now told that the top of the fuel pump module was badly corroded with gas leaking through it. Warranty will not cover the replacement as the module is still working. This is either a faulty design, or substandard materials are being used for this part as this vehicle is not all that old, and this condition is presenting a serious hazard with the gas and gas vapors leaking from the fuel tank.

- Cincinnati, OH, USA

problem #8

Mar 152008

Trailblazer 6-cyl

  • 101,500 miles
The fuel pump sending unit on my 2003 Chevy Trailblazer developed corrosion and leaked fuel from the unit. The cost of the repair was $592.

- Victor, NY, USA

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problem #7

Dec 172007

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 95,000 miles
Fuel was leaking on the ground.

- Batavia, NY, USA

problem #6

Nov 012007

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 48,365 miles


I got a strong smell of gasoline in my 2003 Chevrolet Trailblazer. I stopped at a garage and they looked at it and said the fuel line was either busted or corroded. They could not fix it right away, but said they didn't think the fuel line on a 2003 vehicle should be rusted. The gas was pouring out underneath the vehicle causing a fire hazard. I called the local Chevrolet dealer and they could not fix it either, but they informed me that it would be rusted through that they are replacing a lot of them and also brake lines. I ask if there was a recall for this on the vehicle, and he said no it's just the ice melting materials they use on the roads around here. The gas tank has to be removed and the lines need replaced. The garage that is doing the work says that the fuel pump and filter should be replaced while the tank is down. I don't believe a four year old car should have fuel lines and brake lines rusting out like that. I think it is an engineering mistake on the materials these lines are made from. I am sure a lot of other people have spent large sums of money to repair this problem and if my complaint can get a recall started that would benefit all Trailblazer owners.

- Slippery Rock, PA, USA

problem #5

Apr 182007

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • miles
The smell of gas coming into vehicle, and leaking onto ground underneath. Had fuel pump module (fuel sending unit) changed.

- Canastota, NY, USA

problem #4

Mar 022007

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 65,503 miles
Vehicle would emit a strong fuel odor upon being started. After idling for a short period of time small puddles of gasoline were present beneath the undercarriage of the vehicle dirctly below the fuel tank.

- Camillus, NY, USA

problem #3

Dec 272006

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 93,110 miles
I purchased a used vehicle from upstate Chevrolet in attica NY 14011 and the second month of ownership this vehicle was leaking gasoline. The fuel pump was leaking pushing gasoline out. Vehicle was repaired for $670 all at my cost. Checking with a parts store it was found to be a problem that is common of these vehicles. My vehicle is less than four years old. It is a 2003 Chevy Trailblazer and was repaired on 12/27/06.

- Batavia, NY, USA

problem #2

Jul 032006


  • miles
2003 Trailblazer fuel line and fuel pump rusted and began to leak fuel. The fuel pump had to be replaced at a cost of $800 dollars. The filler neck was leaking at the fuel tank. The front pinion axle seal was leaking and the front stabilizer links were replaced.

- Lewiston, NY, USA

problem #1

Jan 042006

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 48,000 miles
: the contact stated after attempting to start the engine, a strong odor of gasoline was present. After smelling the gasoline, no further attempt was made to start the vehicle. The next day the contact managed to start the vehicle with the odor of gasoline present. The vehicle was driven to an independent repair shop who discovered the fuel pump was cracked and leaking gasoline. The repair shop suggested replacing the fuel pump. Updated 01/25/06.

- Colesburg, IA, USA

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