Fits: 2011 thru 2019 Chevy Silverado/GMC Sierra 2500HD/3500HD LML/L5P Duramax Diesel 

Engineered for heavy-duty work or performance trucks, the TransGo Performance Valve Body Upgrade, 2011-2019 LML/L5P is a comprehensive kit that includes pump and valve body components. This kit utilizes patent-pending technology to provide maximum holding capacity in all clutch packs and lockup, regardless of whether the truck is stock or tuned. With on-demand pressure increases and faster line rise, this kit improves clutch apply times and increases clutch and TCC holding capacity, without raising line pressure to unsafe levels, reducing unnecessary heat and wear.

Features: 

• Crisp upshifts for added durability and performance

• Increased TCC holding capacity

• Factory shift feel at light to medium throttle with progressively firmer upshifts through WOT

• Engineered for work or performance trucks—stock or tuned

Includes:

• High-performance pressure regulator spring
  

• Calibrated main control valve and spring
  

• Re-engineered TCC regulator valves (2) for both early and late designs
  

• Replacement main mod spring
  

• Recalibrated PCS 1 and 2 springs
  

• Unbreakable billet 1-2-3-4 back-feed retainer
  

• Extension and pump housing gaskets

Correct, Prevents, Reduces: 

• Sloppy shift with ratio codes 

• No forward movement 

• 3-4 Slips 

• Burnt frictions

• Low line pressure