GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 LaCrosse 🢒 Power and Signal Distribution 🢒 Data Communications 🢒 Automatic Transmission Controls Schematics
Figure 1:

TCM Power, Ground, and Serial Data (LS4)
Object Number: 2082305 Size: FS
Figure 2:

Shift and TCC Solenoid Valves, TFT Sensor, and Stop Lamp Switch (LS4)
Object Number: 2082309 Size: FS
Figure 3:

PC Solenoid Valve, Fluid Pressure Manual Valve Position Switch, ISS and VSS Sensors (LS4)
Object Number: 2082310 Size: FS
Figure 4:

Automatic Transmission Internal Mode Switch (IMS) (LS4)
Object Number: 2082313 Size: FS
Figure 5:

Shift and TCC Solenoid Valves, TFT Sensor, and Stop Lamp Switch (L26)
Object Number: 2082316 Size: FS
Figure 6:

PC Solenoid Valve, Fluid Pressure Manual Valve Position Switch, ISS and VSS Sensors (L26)
Object Number: 2082318 Size: FS
Figure 7:

Automatic Transmission Internal Mode Switch (IMS) (L26)
Object Number: 2082321 Size: FS