You should install a scan tool, monitor the engine control module (ECM), select the crankshaft position (CKP) variation learn procedure with a scan tool, enable the CKP System Variation Learn Procedure with a scan tool, accelerate to the wide-open throttle (WOT), release when the fuel cut-off occurs, test in progress and then turn off the ignition for 30 seconds after the learn procedure is completed successfully.
By BobGM Specialist
29/10/2022