If you have a subscription to Allison DOC (Diagnostic Optimized Connectivity) , here is exactly how to perform the lookup:
Assuming you have your serial number (e.g., S/N: 6510234567), here is how to use the official links. allison transmission serial number lookup link
| You want to... | Use this link/method | | :--- | :--- | | Lookup full build spec | hub.allisontransmission.com (Requires login) | | Check warranty status | Warranty Check Tool | | Find the serial number | Check left side housing data plate or TCM | | Buy parts | Online Parts Catalog | | Call support | 1-800-252-5283 (Have serial ready) | If you have a subscription to Allison DOC