Transmission Case Locating Pin Replacement

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Transmission Case Locating Pin

Courtesy of GENERAL MOTORS CORP.

NOTE: DO NOT mar the transmission case surface when removing the locating pin. An unmarred surface is required to maintain the seal between the low and reverse clutch housing assembly and the transmission case.

IMPORTANT: Do not replace the transmission case locating pin unless the locating pin is damaged.

Remove the locating pin (1) from the rear surface of the transmission case.
Install a new locating pin (1) into J 43780 (2). See Special Tools .
Using J 43780 (2), drive the locating pin until seated. See Special Tools .
Locating Pin Installed Height: Make sure the locating pin is installed to a height of 20.80-21.20 mm (0.819-0.835 in) above the transmission case rear surface.