hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
55,250 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 EXT exhaust system problems

exhaust system problem

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2003 Chevrolet Trailblazer EXT Owner Comments

problem #2

Aug 202007

Trailblazer EXT 4WD 6-cyl

  • Automatic transmission
  • 56,500 miles


Ticking noise under hood when engine is running. Diagnosed as leaking exhaust manifold. Bolts securing exhaust manifold broken. Repair requires removing cylinder head to remove old bolts. Cost estimated at $2,000 plus. Complaint filed with Chevrolet. Claim initially denied. Continue to ask for assistance. Vehicle is located at trecek chev in portage Wisconsin and is available for inspection.

- Baraboo, WI, USA

problem #1

Jul 152007

Trailblazer EXT 4WD 6-cyl

  • Automatic transmission
  • 54,000 miles
The exhaust manifold on my 2003 Chevy Trailblazer ext has cracked at 54000 miles, and must be replaced at a cost of around $400. I contacted GM directly, and was told that this is considered "normal wear and tear." I disagree. If that is the case, then why would I keep the vehicle, knowing I can anticipate another costly repair within the reasonable life of the vehicle. My local Chevy dealers service manager tells me GM is repairing many of these parts on the 4.2 L. engine of not only the trailblazer, but other vehicles as well. A local aftermarket parts store also says his suppliers have many of these parts on hand. More than one might expect if this were an unexpected occurrence. I believe GM knows it has a part that is unsound, but it is unwilling to correct the problem at its expense. An exhaust manifold is not supposed to fail within less than 4 years, and at 54000 miles. That is not "normal wear and tear.

- Arcade, NY, USA

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