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Adm Msg - 2003 HUMMER H2 Information on Parts Availability for Locking Rear Differential

Subject:Adm Msg -- 2003 HUMMER H2 Information on Parts Availability for Locking Rear Differential

Models:2003 HUMMER H2

Attention: All HUMMER Dealers


The rear axle on the HUMMER H2 includes an electrically locking differential. The differential actuator consists on a coil assembly and a lock assembly with springs and pins to lock the rear differential. The locking differential assembly is serviceable, and it is not necessary to replace the entire axle assembly if there is a concern with the differential.

Available parts include:

   • 

12479135 - Locking Differential Coil

   • 

12479172 - Locking Differential Ball Bearing

   • 

12479173 - Differential Bearing Retainer Ring

   • 

12479134 - Differential Kit

The kit includes the retainer ring, ball bearings, bearing plates, the coil, lock pins and springs.

Refer to H2 Parts Information, Group 5.505 for additional information.