Automatic Transmission Controls Schematics

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: TCM Power, Ground & Serial Data Schematic (LY7)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Shift & TCC Solenoid Valves, TFT Sensor & Stop Lamp Switch Schematic (LY7)

Courtesy of GENERAL MOTORS CORP.

Fig 3: PC Solenoid Valve, Fluid Pressure Manual Valve Position Switch, ISS & VSS Sensors Schematic (LY7)

Courtesy of GENERAL MOTORS CORP.

Fig 4: Internal Mode Switch Schematic (LY7)

Courtesy of GENERAL MOTORS CORP.

Fig 5: Shift and TCC Solenoid Valves, TFT Sensor & Stop Lamp Switch Schematic (L26)

Courtesy of GENERAL MOTORS CORP.

Fig 6: PC Solenoid Valve, Fluid Pressure Manual Valve Position Switch, ISS & VSS Sensors Schematic (L26)

Courtesy of GENERAL MOTORS CORP.

Fig 7: Internal Mode Switch Schematic (L26)

Courtesy of GENERAL MOTORS CORP.