C 2500 Suburban 2WD V8-454 7.4L VIN J SFI (1998)
Air Door Actuator / Motor: Adjustments
Mode Actuator
A. Electrical connector to the actuator.
B. Turn the ignition key to the run position and let the actuator position itself.
C. Turn off the ignition key.
D. Remove the actuator from the electrical connection.
