GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 Sierra Denali 🢒 Transmission 🢒 Automatic Transmission - Allison 🢒 Automatic Transmission Controls Schematics
Figure 1:

Power, Ground, Driver Shift Request Switch, Tow/Haul Switch and Serial Data
Object Number: 2065263 Size: FS
Figure 2:

Shift Solenoids, PCS2, Torque Signals and Speed Sensors
Object Number: 2065265 Size: FS
Figure 3:

Fluid Pressure Switches, PCS1, TCC PCS, Mod Main Solenoid, and FTP Sensor
Object Number: 2065269 Size: FS
Figure 4:

Internal Mode Switch (IMS) and Speed Sensors
Object Number: 2065278 Size: FS