Center Support and Gear Unit Assembly Removal

WARNING: This page is about a different car, the 2007 GMC Yukon XL and 2007 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

J 6116-A Rear Gear Holding Fixture. See Special Tools .
J 6129 Handle. See Special Tools .
J 21364-A Rear Gear Holding Fixture Adapter. See Special Tools .
J 38868 Output Shaft Assembly Remover and Installer. See Special Tools .

Fig 1: Locating Center Support Bolt

GM28408

Courtesy of GENERAL MOTORS CORP.

NOTE: Discard the center support bolt (25) after you have removed the bolt. Damage could result to the center support housing if you reuse the bolt.

Remove the center support bolt (25).

Fig 2: View Of Rear Oil Cooler Pipe Fitting & Seal

GM54546

Courtesy of GENERAL MOTORS CORP.

Remove the rear oil cooler pipe fitting (90).
Inspect the rear oil cooler pipe fitting (90) for damaged threads.
Inspect the rear oil cooler pipe fitting seal (91) for nicks or cuts.

Fig 3: Locating Center Support Retainer Ring

GM334766

Courtesy of GENERAL MOTORS CORP.

Remove the center support retainer ring (633).

Fig 4: Installing J 38868 To Transmission Main Shaft

GM334768

Courtesy of GENERAL MOTORS CORP.

Attach the J 38868 to the transmission main shaft. See Special Tools .
Tighten the thumb screw on the J 38868 . See Special Tools .
Install the J 6129 to the J 38868 . See Special Tools .
Turn the J 6129 so that the handle shaft contacts the transmission main shaft. See Special Tools .
Remove the center support and gear unit assembly (640-672) by lifting the J 38868 with the J 6129 . See Special Tools .
Remove the J 6129 and the J 38868 . See Special Tools .

Fig 5: Installing Center Support & Gear Unit Assembly Into J 21364-A

GM28411

Courtesy of GENERAL MOTORS CORP.

Place the center support and gear unit assembly (640-672) into the J 21364-A (not visible in the illustration) and then into the J 6116-A . See Special Tools .