Transfer Case - Leaks/Low Power/Vehicle Won't Move
Bulletin No.: 03-04-21-002Date: February 27, 2003
TECHNICAL
Subject:
Transfer Case Bushing/Slip Yoke Leak, Transmission Downshifting, Loss of Power, Vehicle Will Not Move (Replace Damaged Components/Install New Longer Style Propeller Shaft)
Models:
2003 HUMMER H2
Condition
Some customers may comment on any of the following conditions:
^ Transfer case leak
^ Transmission downshifting
^ Loss of power
^ Vehicle will not move
^ A major component failure
Cause
Design tolerances may lead to insufficient lubrication of the rear output shaft bushing in the transfer case.
Correction
Use the following SI procedures to correct the condition.
1. Refer to SI document ID # 821933 to remove the transfer case.
2. Refer to SI document ID # 857284 to replace the rear case half, the rear output seal and inspect and replace transfer case components as necessary.
3. Refer to SI document ID # 821933 to install the transfer case.
4. Replace the propeller shaft with a new longer style propeller shaft. The tube portion of the propeller shaft is 19 mm (0.75 in).
Parts Information
Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use the table shown.
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