Sunroof Motor/Actuator Initialization/Teach Process (Extended Cab Existing Motor)

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Perform the Initialization/Teach Procedure any time a new sunroof motor/actuator is installed in the vehicle.

Fig 1: Identifying Sunroof Motor/Actuator (New Style MD4)

Courtesy of GENERAL MOTORS CORP.

Press and hold the open switch until the full open position.
Release the switch.
Press and hold the open switch for 10 seconds or more. The glass panel will move further rearward of the open position, stall at the hard stop, and move back slightly to the soft stop or full open position.
Release the switch
Press and hold the open switch within 6 seconds.
Hold the open switch until the glass panel moves to the closed position and stops.
Release the switch.