Yukon 4WD V8-5.3L (2008)
Shift Fork: Technical Service Bulletins
Drivetrain - Magna Transfer Case Service Parts Info.
INFORMATION
Bulletin No.: 09-04-21-006
Date: October 29, 2009
Subject: Information on Magna Transfer Case Service Parts for Control Actuator Levers
Models:
2007-2010 Cadillac Escalade Hybrid
2007-2010 Chevrolet Avalanche, Silverado, Suburban, Tahoe
2007-2010 GMC Sierra, Yukon, Yukon XL
All Equipped with Magna MP3023 Two-Speed Active Transfer Case (RPO NQH) or MP3010 Single-Speed Active Transfer Case (RPO NQH and NP0)
Note
Heavy duty (HD) components are the only parts available for service.
The purpose of this bulletin is to provide information regarding the servicing of the Light Duty (LD) transfer cases. LD Transfer cases are built with LD
control actuator levers (3 and 6) and are used with 13 mm (0.52 in) diameter control actuator lever balls (5). Heavy Duty (HD) components can be
identified as using 10 mm (0.39 in) control actuator lever balls.
Note
Light Duty (LD) 2007-2010 MP3023-NQH and 2010 MP3010-NP0 transfer cases are built with LD control actuator levers (3 and 6) and are used with
13 mm (0.52 in) diameter control actuator lever balls (5). Heavy Duty (HD) components can be identified as using 10 mm (0.39 in) control actuator lever
balls. Additional component dimensional information can be obtained within the applicable Transfer Case Description and Operation/Build Variations
section of SI.
When replacement of one or both of the LD control actuator levers is required, it is necessary to replace both of the levers and all three balls with the HD
components as a set. It is also necessary to re-measure and adjust clutch pack clearances as required and to perform the Transfer Case High/Low Clutch
Reset. Refer to Measuring/Adjusting Clutch Assembly Height in Transfer Case Assemble, Transfer Case Description and Operation and Transfer Case
High/Low Clutch Reset. Refer to the table below for information regarding the HD design part numbers.
Parts Information
Disclaimer
