Transfer Case Clunk in 4LO Lock
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 Clunk in 4LO Lock
| Cause |
Correction |
DEFINITION: During acceleration or deceleration, a clunk is heard or felt in the transfer case while in 4LO Lock range only.
Review the Symptoms - Transfer Case and perform the necessary inspections. |
| High/low planetary carrier assembly |
- Inspect for the following conditions:
- Replace the high/low planetary carrier assembly if any of the above conditions are found. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case - BW 4482-NR4 Unit Repair.
|
| Annulus gear |
- Inspect the annulus gear to front case fit for excessive looseness.
- Inspect the front case for wear caused by excessive looseness.
- Replace the front case half if worn.
|
| Range sleeve |
- Inspect the range sleeve engagement teeth for excessive wear.
- Inspect the range sleeve to mainshaft splines for excessive wear.
- Replace the range sleeve if faulty. Refer to
Transfer Case Disassemble
and
Transfer Case Assemble
in Transfer Case - BW 4482-NR4 Unit Repair.
|