Transfer Case Shudder or Binding
WARNING: This page is about a different car, the 2004 GMC Yukon XL and 2004 GMC Yukon. However, it is still accessible from the selected car via links, so may be relevant.
Transfer Case Shudder or Binding
| Cause |
Correction |
DEFINITION: A shudder, binding, or a crow-hop while turning, which may cause tire scuffing.
Review the Symptoms - Transfer Case and perform the necessary inspections. |
| Intermittent shift lock up engagement |
- Shift the vehicle into 4LO Lock.
- Shift the vehicle from 4LO Lock to the 4HI mode.
- Drive the vehicle and inspect for the shift lock up staying engaged after shifting from the 4LO Lock to the 4HI mode. If the shift lock up stays engaged after shifting from 4LO Lock, it gives a symptom of both axles driving without any speed difference between the axles. It is noticed by tire scuffing on dry pavement when turning.
- Drive the vehicle in reverse for a few feet.
- Drive the vehicle forward and inspect for the shift lock up staying engaged. If the shift lock up disengaged after driving the vehicle in reverse, this is normal and no further action is required.
- Advise the customer to drive the vehicle in reverse for a few feet if the shift lock up does not disengage after shifting out of 4LO Lock.
|
| Planetary differential |
- Inspect the planetary differential pinion gears for the following conditions:
- Inspect the planetary differential for deformation. Refer to
Cleaning and Inspection
in Transfer Case - BW 4482-NR4 Unit Repair.
- Replace the planetary differential assembly if faulty. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case - BW 4482-NR4 Unit Repair.
|
| Thrust washers |
- Inspect the thrust washers for seizure to the planetary differential.
- Replace the thrust washers if faulty and the mating component if damaged. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case - BW 4482-NR4 Unit Repair.
|
| Planetary differential not timed properly |
- Inspect the planetary differential for being timed properly. Refer to
Transfer Case Assemble
in Transfer Case - BW 4482-NR4 Unit Repair.
- Properly time the planetary differential gears. Refer to
Transfer Case Assemble
in Transfer Case - BW 4482-NR4 Unit Repair.
|