Review Of 2004 Envoy Replaced Cam Sensor Check Engine Light Still On Ideas. Web there’s no set schedule for replacing the camshaft position sensor. If you have a flashing check engine light, turn off the engine immediately to prevent potential motor damage.

Web there’s no set schedule for replacing the camshaft position sensor. Check engine light on and flashing in your car. Web you can check the following instructions if you find that the replaced camshaft position sensor light is still on.