Shift Controllers/Kits

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Bully Dog Shift Enhancer<br> (2001 - 2005 Chevy/GM Duramax 6.6)

Bully Dog Shift Enhancer
(2001 - 2005 Chevy/GM Duramax 6.6)

Our Price: $102.71

Bully Dog’s shift enhancers improve shift and line pressure while reducing slipping and lowering heat. The end result is firmer, quicker shifts which vastly improves the driving experience and longevity of the transmission by lowering transmission temperatures.

ATS Diesel Co-Pilot Transmission Controller<br> (2001 - 2005 Chevy/GM Duramax 6.6)

ATS Diesel Co-Pilot Transmission Controller
(2001 - 2005 Chevy/GM Duramax 6.6)

Our Price: $1,176.20

The ATS Co-Pilot® Upgrade Kit for the Allison 1000 Transmission solves the major problems with the stock Allison LCT-1000 when you turn up the power of the Duramax, the stock Allison 1000 transmission begins to slip in 5th gear, and the Factory Single-disc Torque Converter lockup clutch begins to slip.