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Home >> Chevrolet >> 2024 >> Tahoe Commercial, 4WD >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> Front Drive Axle - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> Four-Wheel Drive Does Not Engage

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. Front Drive Axle Description and Operation
Is the system operating properly?
System OK Go to Step 2 
2
  1. Raise the vehicle. Lifting and Jacking the Vehicle
  2. Remove the actuator motor. Refer to: Front Drive Axle Actuator Replacement
  3. Using a brass drift, apply pressure to the drive axle clutch sleeve, to engage the sleeve. While turning the right wheel to align the clutch gears.
While turning the right wheel, does the left wheel turn in the opposite direction?
Test the Drive Axle Actuator Go to Step 3 
3
  1. Remove the intermediate shaft and inner shaft housing assembly. Front Drive Axle Inner Shaft Housing Replacement
  2. Inspect the following:
    • Drive Axle Actuator
    • Drive Axle Clutch Sleeve
    • Wheel Drive Shaft
    • Intermediate Shaft

      Repair as needed.

Did you complete a repair?
Go to Step 1  System OK