While parked and with the parking brake set, try to turn the ignition to LOCK/OFFin each shift lever position.
The ignition should turn to LOCK/OFF only when the shift lever is in P-(Park).The ignition key should come out only in LOCK/OFF.Contact your dealer if service is required.
Reverse (Gen 2/Hybrid) Automatic Transmission Unit
Windshield Wiper Transmission Replacement (Terrain) Automatic Transmission Unit#PIC5492B: Diagnostic Tip: Diagnosing Vehicles with OnStar DTC B101D-37 - (Oct 4, 2013)
Subject:Diagnostic Tip: Diagnosing Vehicles with OnStar DTC B101D-37Models: 2011-2014 GM Passenger Cars & Light Duty Trucks with OnStar (RPO UE1) This PI was superseded to update model year. Please discard PIC5492A.The following diagnosis might be helpful if the vehicle exhibits the symptom(s) d ...