Plugged Catalytic Converter May Cause Loss of Engine Power on Chevrolet Impala
Problem overview
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.
153 people reported this problem
51 commentsChevrolet Impala vehicles with this problem
13 model years affected
Average mileage: 117,867 miles
(24,000 - 257,000)
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