SPN 3359 FMI 31 – Transmission Filter Maintenance Required (DTC P088B)
If you’re seeing SPN 3359 FMI 31 or DTC P088B – Transmission Filter Maintenance Required, your vehicle is warning you that the transmission filter may […]
Allison Trouble Repair
Allison 3000 & 4000 Gen 5 — Engine Speed Sensor Circuit No Signal Solution
This guide explains how to diagnose and repair the Engine Speed Sensor Circuit No Signal fault (DTC P0727) on Allison 3000 and 4000 Gen 5 […]
Allison DOC Transmission Diagnostic Software – Free Download (2024 & 2019)
What is Allison DOC? Allison DOC is a dealer-level diagnostic software designed for connecting, communicating, and troubleshooting Allison Transmissions. A new version is typically released […]