GCUS-3-631

45250 - Customer Satisfaction Program. Certain vehicles may have a condition in which the shift knob may become detached from the shifter. If this occurs, and the electrical connection is not made, the vehicle provides a ?Service Transmission? driver information center warning message, and also sets numerous diagnostic trouble codes (DTCs) including, but not limited to: P07B4, P07BA, U156D, P17A4, P17A8, and P17A9. Dealers are to inspect and verify the transmission control lever knob is installed correctly and clear all DTCs.