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.
Car Problem Reports
Chevrolet Impala Plugged Catalytic Converter May Cause Loss of Engine Power
Chevrolet Impala Problem
Average Mileage: 94,333 mi (80,000 mi - 103,000 mi)
Visitor, 2003 Chevrolet Impala, 103,000 mi
This happened, was diagnosed as a board, BUT the catalytic converter actually 'plugged up' and blew up through the top of the motor, burning the wiring harness that was laying on top. Chevrolet 'warranted' the catalytic converter and the labor, but will not put a recall on it because they don't want to be responsible for all the problems that it may cause!
They had already ordered the board (think pcm) but it wasn't helping remedy the situation, just as luck would have it there was a mechanic there that had heard of this issue before and sure enough it was all the charred wiring, might not have needed the board, but we had to pay for it anyway. This car really let me down and is the nicest car i ever had and the most i ever paid for one.
I'm sorry but i have NO respect for chevrolet anymore!!!
Visitor, 2002 Chevrolet Impala, 80,000 mi
no passing power