Four-Wheel Drive Does Not Engage

NOTE:

Before performing the following diagnostic procedure, ensure that all electrical diagnostic procedures have been performed and there are no DTCs.

Step	Action	Yes	No
1	Confirm operation of system. Refer to Front Drive Axle Description and Operation . Is the system operating properly?	Test the system	Go to Step 2
2	Raise the vehicle. Refer to Lifting and Jacking the Vehicle . Remove the actuator motor. Refer to Front Drive Axle Actuator Replacement (8.25 Inch LD Axle) Front Drive Axle Actuator Replacement (9.25 Inch HD Axle) . Using a brass drift, apply pressure to the clutch fork. Turn the right wheel to align the clutch gears. While turning the right wheel, does the left wheel turn in the opposite direction?	Test the system	Go to Step 3
3	Remove the inner axle shaft and housing assembly. Refer to Front Drive Axle Inner Shaft Housing Replacement (8.25 Inch LD Axle) Front Drive Axle Inner Shaft Housing Replacement (9.25 Inch HD Axle) . Inspect the following: Clutch Fork Clutch Sleeve Clutch Gear Clutch Return Spring Repair as needed. Did you complete the repair?	Test the system	System OK