Incredible 2002 Trailblazer Check Engine Light On References. Web disconnecting the battery can clear the serv 4wd on your chevy trailblazer. Web the video above shows how to locate the on board diagnostics obd plug location on your 2002 trailblazer, how to read the trouble codes and how to reset or clear the check engine light using a scanner on your trailblazer.
Simply loosen the clamp using an appropriate wrench and then pull the cable off the terminal. The check engine will flash once the computer has detected a mis fire in the engine. Web check engine light on problems of the 2002 chevrolet trailblazer.
