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Valve Body Repair Kit

Allison 1000 5SPD

Pricing: $209.00


This valve body repair kit fits 2001 - 2005 GM vehicles equipped with the Allison 1000, 2000 and 2400 5SPD automatic transmission. Common complaints on this transmission are neutralizing under high-load in 4th or 5th gear, burnt C2 clutch plates, no movement in forward or reverse, stuck in one gear as well as gear ratio and solenoid performance codes. The five-speeds have an external MLP switch, while the six-speeds have an internal MLP switch.

Features & Benefits

The kit’s valve body components together with the internal modifications are designed to provide substantial gains in friction plate durability. With this kit installed the friction torque capacity of the C2 is increased by approximately 111%, while the C3 and C4 brake is increased by approximately 100%. Both increases in percentage values are when the lock-up clutch is off and line pressure is at maximum. Lastly, the TCC limit and lube regulator valve springs provided combats the excessive drain-back and loss of pump prime complaints on 2001-2003 models.

Corrects, Prevents , & Reduces:

  • 3-4 slip
  • Burnt C2 and C3 lined plates
  • No movement after being parked for an extended time
  • Loss of pump prime
  • Codes: P0732, P0733, P0734, P0735, P0766 and P0777

What's in the box?

  • (2) C2 piston orifice cup plugs
  • (32) C2 piston return springs
  • (2) drill bits
  • (2) USA-made hardened steel trim valves, balls, inner and outer springs
  • (1) TCC limit valve spring
  • (1) lube regulator valve spring
  • (1) parking pawl pin and spring
  • (1) extension and pump housing gaskets



Shipping Information

  • Item Requires Shipping
  • 5.0 lbs.
  • W16.0000” x H4.0000” x L16.0000”


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