Sierra Classic 2500 4WD V8-6.0L (2007)
10. Connect the PNP switch electrical connector (2).
11. If equipped with 4WD, install the front propeller shaft. Refer to Front Propeller Shaft Replacement.
12. Lower the vehicle.
13. Check the PNP switch for proper operation. The engine must start in the park (P) or neutral (N) positions only. If proper operation of the switch
can not be obtained, replace the switch.
