Replacement Procedure

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 Main Valve Body Locating Pins

Courtesy of GENERAL MOTORS CORP.

CAUTION: DO NOT mar the main valve body surface when installing the locating pin(s). Tap gently on the locating pin installer tool. Heavy or continued hammering will damage the transmission case surface.

NOTE: The main valve body has 5 locating pins that can be replaced. Do not replace a locating pin unless the pin is damaged.

Remove the locating pin from the main valve body.
Place a new locating pin into J 43779: installer (3).
Install J 43779: installer with the locating pin into the locating pin hole.
Gently tap J 43779: installer until J 43779: installer touches the main housing surface.
Specification: The locating pin installed height is 10.7-11.3 mm (0.42-0.44 in) above the main valve body surface.