Transmission Case Locating Pin Replacement

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 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.

CAUTION: 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.

NOTE: 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: installer (2).
Using J 43780: installer (2), drive the locating pin until seated.
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.