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9.3

really awful

Typical Repair Cost:

no data

Average Mileage:

78,217 miles

Total Complaints:

3 complaints

Most common solutions:

  1. not sure (3 reports)
Pontiac Grand Prix exhaust system problems

exhaust system problem

This problem may be covered under warranty. Ask your Pontiac dealer.

Helpful Websites About 2002 Pontiac Grand Prix catalytic converter plugs up, loss of power

A D V E R T I S E M E N T S

problem #3

2007Feb 15

Grand Prix 3.1L

  • Automatic transmission
  • 70,000 miles

We noticed our car started losing power. We pushed on the gas, and it would take forever for it to get up to speed. We also started getting very poor gas mileage (13 mpg). We took it in to the dealership and were lucky enough to have this under warranty. If I remember correctly, the warranty is for up to 80,000 miles. It is a VERY expensive fix otherwise.

Mandi H.

Seattle, WA, USA

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problem #2

2008Oct 15

Grand Prix GT V6

  • Automatic transmission
  • 105,000 miles

My 2002 Pontiac Grand Prix GT gradually started losing power, then BOOM I had no power as of October 2008. When accelerating the car jerks and shifts but doesn't stall (knock on wood). At one point it almost overheated and the service engine soon light came on as well. All the while, my low coolant light has been on for months and it's not the sensor its something else. After reading on this and seeing another person has this problem, I've concluded it could be the catalytic converter.

This will be the last GM product I purchase if this problem is not resolved by year's end. I had a Tahoe and had a similar problem but turns out it was the fuel pump. When these vehicles lose power, that's the end. :-(

sgbrewster

Boston, MA, USA

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problem #1

2007May 02

(reported on)

Grand Prix GT 3.8L V6

  • Automatic transmission
  • 59,652 miles

car had no power. The computer comes up ok plug converter comes up ok put it was a piece falls down when you step on the gas it flips up and plugs.

Darren W.

Hamilton, ONT, Canada

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