Pacific Performance Engineering 128043000 Allison Valve Body Recalibration Kit GM Duramax 2006-2010

The Pacific Performance Engineering (PPE) 128043000 Valve Body Recalibration Kit (VBR Kit) is a performance upgrade engineered specifically for the GM Allison transmission found in 2006–2010 Duramax-equipped trucks. Designed for drivers who demand more from their vehicles — whether towing heavy loads, racing, or tackling extreme work conditions — this kit addresses the most common Allison transmission failure modes and delivers noticeably improved shift quality.

Key Benefits:

• Corrects the Allison's tendency to drop into neutral under load
• Prevents 3rd-to-4th gear slippage for more consistent power delivery
• Eliminates C2 and C3 clutch burning caused by inadequate pressure or soft shifting
• Reduces the risk of the transmission sticking in a single gear
• Delivers short, crisp, and smooth up and downshifts without sacrificing street drivability

What's Included:

• Recalibration springs
• All necessary gaskets
• Step-by-step installation instructions

Installation Note: The transmission does not need to be removed from the vehicle for the 2006–2010 application, making this a straightforward in-vehicle service. MPN: 128043000. Also referenced as the PPE VBR Kit or Allison shift kit.