Car Problem Reports

Chevrolet Impala SS Check Engine Light Due to Restricted Secondary Air Injection Check Valves

Chevrolet Impala SS Problem
5 Reports
Me Too

Model Years Affected: 2006, 2007, 2008

Exhaust & Emissions Affected: 5.3L V8

Average Mileage: 62,500 mi (50,000 mi - 75,000 mi)


One or both secondary air injection check valves may become restricted causing poor air flow resulting in illumination of the Check Engine Light. It is often recommend to replace both check valves even if a fault code is set for only one bank of cylinders. Replacing only one valve may result in a return trip to the repair shop.

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