Description
Fits 2001-2016 Allison Transmission Equipped GM Trucks.
Control your torque converter from the palm of your hand with the AlliLocker from Fleece Performance Engineering.
The AlliLocker will allow you to bypass the TCM controls to lock/unlock the torque converter on demand. Turn the bypass switch off, and the TCM regains control of the torque converter clutch.
The AlliLocker is intended for track use only and is NOT designed to be used on public roadways. If used on public roadways, the AlliLocker may set a DTC causing a range shift inhibit. This can typically be cleared by a key cycle. When used on the sled pull or drag race track, where there is only one lock event, the AlliLocker will not cause a range shift inhibit.
Operation
State | Function | |
Bypass Switch | LED OFF (disengaged) | TCC Operation Controlled by the TCM |
| LED ON (engaged) | TCC Operation Controlled by the Lock Switch | |
Lock Switch | Latched (Down) | When Bypass LED is illuminated, TCC is commanded to lock |
| Unlatched (Up) | When Bypass LED is illuminated, TCC is commanded to NOT lock |
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