Pontiac Grand Prix Problem Report

Pontiac Grand Prix Loss of Engine Power Due to Plugged Catalytic Converter

(12 reports)

The catalytic converter may become plugged resulting in loss of engine power. General Motors has extended the catalytic convertor warranty on some models to 10 years or 120,000 miles. Please contact your local GM dealer to see if your vehicle is included.

Loss of power causing the transmission to not shift out of first gear. Car is in the shop right now and I am currently being told it is a plugged Catalytic converter. Shop is trying to charge me $800 to fix it. -
straight pipe -
Had to have the entire exhaust system replaced it has a plugged catalytic convertor. -
loss of power bad -
Put on an aftermarket catalytic, had to replace a few months later with a GM converter $800 -
Lost of power going up hills. $700.00 to fix -
had no power exausth manifold get red hot , replaced catiliatic converted ran great -
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