NHTSA — Engine And Engine Cooling: Exhaust System: Emission Control: Catalytic Convertor Problems


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
56,787 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 #5

Jun 062005

Grand Prix 6-cyl

  • Automatic transmission
  • 90,000 miles


I had a letter sent through the mail that said that I could have a problem with my catalytic converter but when I took it to the dealer to have it fixed they said my check engine light had to be on so they said they wouldn't fix it but on the paper said nothing about the check engine having to be on. It only said that the catalytic converter might be bad if I had power loss but they said they wouldn't fix it until the light came on.

- St Meinrad , IN, USA

problem #4

Oct 102005

Grand Prix 6-cyl

  • 28,000 miles
The contact states he owns a 2001 Pontiac Grand Prix. The transmission does not shift correctly. The contact states this is due to the catalytic converter malfunctioning. The contact states he received a notice in the mail 9-05. This notice is not a recall notice. The notice states there could be a problem with the catalytic converter. He called the dealership and the dealer told him that transmission not shifting correctly was not a sign of the catalytic converter going bad. He also called Pontiac, and filed a complaint on 10-10-05. The file number is 1-367-660-427.

- Elkhart, IN, USA

problem #3

Jan 212004

Grand Prix 6-cyl

  • Automatic transmission
  • 87,747 miles
While driving, the car put out little power and I was only able to go 10-12 mph. I took to one mechanic who said it may be transmission. I took to transmission specialist who said the transmission was in good condition. He felt it was something in the engine. Took to 3rd mechanic who said the catalytic converter was clogged and he replaced it. Cost to find out it was not transmission- $51.50. Cost to replace catalytic converter-$975.15. Mileage at this time was 87747 miles.

- Merrimack, NH, USA

problem #2

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

problem #1

Dec 152003

Grand Prix 8-cyl

  • Automatic transmission
  • 78,187 miles
Catalytic converter car lost power was not running rough. Took vehicle to mechanic told catalytic converter was bad. Took to dealer told not covered because car was misfiring. Asked if bad converter could cause misfire since car was not running rough at first. Told no.asked what was causing misfire, told could be anything. Charged $75 because converter was not covered due to misfireconverter warrenty for 80000 miles.

- Pasadena, MD, USA

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