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6 speed Allison only goes to first gear and reverse
Because I had one and it was quick and easy. Update the truck will shift through all the gears in 2wd in 4lo it won’t go into 4th gear as the tcm is set up. Went through all wires harness is 2 years old truck sits as it’s dedicated puller in climate controlled shop so no mice or anything like...- Lbzpuller3
- Post #5
- Forum: Mike L's Trans Talk
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L
6 speed Allison only goes to first gear and reverse
Yes tried known good tcm, it shifts in 2wd all the way to 6 in 4 lo for pulling for some reason I can’t get it to go into 4th gear as the tune is designed, and works on any other lbz I plug tcm into.- Lbzpuller3
- Post #3
- Forum: Mike L's Trans Talk
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L
6 speed Allison only goes to first gear and reverse
Having possible trans motion troubles on my pulling truck. Have a 4th gear start tune that I have ran for years. Hi stall suncoast converter. After going to the engine dyno and placing the motor back in and it sitting for 6 months with our current state. The truck won’t shift out of first...- Lbzpuller3
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- Replies: 5
- Forum: Mike L's Trans Talk