|
GM Speedometer and Transmission Shift Problem
This truck has a Allison automatic transmission. I have a wire stated Signal High Rear - from the Allison TCM to the ECM trying to understand what this signal is. I have a poor transmission shift with an incorrect vehicle speed @30-45 mph off . I can remove th... Login to read more. 
iATN Members:
Login to read this message and participate Auto Repair Pros: Join iATN to read this message and others Vehicle Owners: Find a nearby iATN member to repair your vehicle 2 Replies Received (View Replies)2 Replies Received (Hide Replies) |
|
2 Replies Received
2 Replies Received
| Engine | 6.6 L |
Vehicle Data
2003 GMC C4500 Topkick C4C042 6.6L
| Engine | 6.6 L |
Video