2006-2009 GMC / Chevy Kodiak / Topkick 6 Speed Conversion (TCM Bench Flash)

Unlock the 6th gear in your 2006-2009 Chevy Kodiak / GMC TopKick. Your factory transmission has all of the internal components it needs to achieve a 6th gear. The only thing it's missing is the TCM programming required to activate it. Through a simple bench flash, we can program your stock TCM to achive 6th gear along with improving the factory operation of the transmission. 

Adding a 6th gear can improve the reliability and fuel economy of your 2006-2009 Chevy Kodiak / GMC TopKick by reducing engine RPMs at highway speeds. This creats less wear on your internal rotating components and reduces fuel demand. Our Custom TCM Tuning re-calibrates the firmness and timing of shifts, so you’ll be guaranteed to feel the smooth shifts that are missing from the 5-speed Allison. Keeping your truck at lower RPM's while cruising means you’ll also notice how much quieter your ride is after adding our kit to your truck. NVH (Noise, vibration, and harshness) will decrease drastically, giving you a much more enjoyable ride. 

How It Works:

• Remove the factory TCM from your truck
• Ship your TCM to us for bench flashing
• We will flash our custom tuning on to your stock TCM
• We will ship your fully tuned TCM back to you
• Once you recive your programed TCM simply plug and play!