Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Allison - Automatic Transmission

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

Shift Solenoids, PCS2, Torque Signals and Speed Sensors

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

Internal Mode Switch (IMS) and Speed Sensors

Locations: The locations for the Connectors, Grounds, Splices, and Grommets shown within these diagrams can be found via their numbers at Location. Locations