Automatic Transmission Controls Schematics

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: Power, Ground, Driver Shift Request Switch, Tow/Haul Switch and Serial Data

Courtesy of GENERAL MOTORS CORP.

Fig 2: Shift Solenoids, PCS2, Torque Signals and Speed Sensors

Courtesy of GENERAL MOTORS CORP.

Fig 3: Fluid Pressure Switches, PCS1, TCC PCS, Mod Main Solenoid, and FTP Sensor

Courtesy of GENERAL MOTORS CORP.

Fig 4: Internal Mode Switch (IMS) and Speed Sensors

Courtesy of GENERAL MOTORS CORP.