🔍 : Always verify the SN on the physical tag first, as TCMs can sometimes be swapped between vehicles without being reprogrammed.
Verifies if a replacement torque converter, solenoid, or internal gear set will fit your specific build assembly. Allison Transmission Serial Number Lookup
Widely used in motorhomes, regional haul trucks, and emergency vehicles. Look for the tag on the passenger side (right side) of the main case, roughly midway up the housing. 🔍 : Always verify the SN on the
The most reliable lookup method is the official website. regional haul trucks
Allison provides an authorized online tool for fleet managers and owners.