Check Engine Light Due to Vacuum Leak in EGR Tube on Chevrolet Impala
Problem overview
The exhaust gas recirculation (EGR) tube which connects the EGR valve to the intake manifold may develop an engine vacuum leak, causing the Check Engine Light to illuminate with code P0171 and/or P0174 stored.
58 people reported this problem
19 commentsChevrolet Impala vehicles with this problem
8 model years affected
Average mileage: 122,634 miles
(16,580 - 223,481)
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