Cadillac Escalade EXT Problem Report

Cadillac Escalade EXT Check Engine Light Due to Restricted Secondary Air Injection Check Valve

(5 reports)

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.

Related Items:
A Loose or worn gas cap may cause Check Engine Light to illuminate.
One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail,...
When do i know when my air shocks have been worn out?
service stability light comes on frequently. also when going down a hill and turn left abs seem...
The daytime running lights are prone to burning out. Our technicians tell us that the light soc...