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NHTSA — Engine And Engine Cooling: Exhaust System: Manifold/Header/Muffler/Tail Pipe Problems


fairly significant
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
13,000 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.

2001 Pontiac Grand Prix exhaust system problems

exhaust system problem

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2001 Pontiac Grand Prix Owner Comments

problem #4

Dec 142005

Grand Prix 6-cyl

  • Automatic transmission
  • miles


The contact stated the vehicle caught on fire without warning. The fire occurred in the engine compartment, and was first noticed from under the hood. Currently the vehicle operated properly. The mechanic could not determine what the cause of the fire. However, they believed it was the exhaust manifold area. The fire department was contacted and a report was taken.

- Foresthills, CA, USA

problem #3

Nov 112004

Grand Prix 6-cyl

  • Automatic transmission
  • miles
The vehicle was leaking antifreeze. Had to use a special orange kind of antifreeze. Took this vehicle to the dealer 11-22-04 had coolant leak at the intake. January 6, 2005 a coolant light would stay on and replaced sensor. Had a coolant leak again. The dealer stated they needed to replace head gaskets.

- Carmel, IN, USA

problem #2

May 282004

Grand Prix 6-cyl

  • Automatic transmission
  • 52,000 miles
Defective design of intake manifold plenum gasket on 2001 Pontiac Grand Prix -found cracked/leaking during routine service. Car has 52,000 miles, regular maintenence. Condition can lead to coolent in engine & engine failure. Repair is $650. This is a common condition in this engine caused by defective design. GM used a plastic plenum and gasket that cannot take the heat at this location. There are thosands of postings on the internet regarding this issue accross GM model lines. GM should warranty this repair and recall these vehicles.

- Brookeville, MD, USA

problem #1

Feb 032004

Grand Prix

  • Automatic transmission
  • miles
While driving vehicle, reached high temperatures due to intake manifold failure. Dealer replaced the intake manifold and egr valve. Also catalytic converter was defective.

- Dillsburg, PA, USA

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