Even with a transmission as venerable as the Allison may need some well placed improvements; that is why PPE has designed the Allison Valve Body Recalibration Kit (VBR kit). The VBR kit is perfect for those individual who really punish their vehicles in activities such as towing, racing or extreme work. This kit corrects and reduces the Allison from going into neutral under a load. It also prevents 3rd to 4th gear slips, C2 or C3 clutch burning, and the tendency of sticking in one gear. This kit allows customers to experience short, crisp and smooth up and down shifts. Kit includes the instructions for a trouble free and worry installation.
2001 - 2010 LB7/LLY/LBZ /LMM
Chevrolet/GMC 1000, 2000, 2400
GM 2001 - 2005 (128042000) Transmission must be removed from vehicle. Kit includes gaskets and springs.
GM 2006 - 2010 (128043000) Transmission does not need to be removed.