Begin the Crankshaft Position Sensor replacement operation with these steps: first turn the ignition and start switch to off or lock then disconnect the negative
Battery Cable to avoid electrical sparks. Onstar(R) (UE1) vehicles with a back up battery require vehicle owners to wait until rap times out before disconnecting power to avoid damaging the back up battery. This precaution applies when the main vehicle battery or onstar(R) fuse requires removal while the ignition key remains in off mode. After lifting the car begin with
Starter removal. The area surrounding the crankshaft position (CKP) sensor needs cleaning before disconnecting its electrical connector to improve engine debris prevention. After removing the retaining fastener, you should take out the ckp sensor by hand. Reinstall the retaining fastener by placing the ckp sensor in position before tightening it to 25 nm (18 lb ft). Following Starter installation reconnect the ckp sensor electrical connector while lowering the vehicle and restoring the negative Battery Cable. Complete the ckp system variation learn process as the last step.