GM 6T70, 6T75 and 6T80 Gen. 1 and Gen. 2 units are very similar in appearance but cannot be interchanged. Reference the Sonnax identification guide to verify the correct valve body is installed.

6T70 (Gen. 2), 6T75 (Gen. 2), 6T80 (Gen. 2)

Remanufactured Valve Body
Part No. GM6T70-2

Fits '13-later only, Sold without TEHCM.

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Sonnax remanufactured valve body GM6T70-2 has been designed to address common issues in GM Gen. 2 6T70, 6T75 and 6T80 transmissions such as: harsh TCC apply, TCC slip, solenoid performance codes, wrong gear starts, slips and flares, harsh shifts, delayed engagements, burnt clutches, low converter and lube flow and erratic line pressure.

To guarantee the highest level of operational performance, this remanufactured valve body is tested on state-of-the art equipment to verify that actuator feed limit pressure, clutch pressures, torque converter pressures, and line pressure match OE specification.

A TEHCM is not included with the valve body, but is available from OE and various aftermarket sources if required.

  • Bores, checkballs, seals, casting...every critical area is reviewed, refreshed and repaired
  • New separator plates and gaskets installed
  • Top-quality Sonnax components optimize valve body function and prevent future wear
  • State-of-the-art testing verifies main line, AFL, clutch, torque converter pressure match new OE specs
  • 6T70 (Gen. 2), 6T75 (Gen. 2), 6T80 (Gen. 2) Remanufactured Valve Body GM6T70-2
  • 6T70 (Gen. 2), 6T75 (Gen. 2), 6T80 (Gen. 2) Remanufactured Valve Body GM6T70-2 details

GM 6T70/75/80 (Gen. 1 & 2) Identification Guide

Lower Valve Bodies
Separator Plates
Gen. 1 6T70/75Gen. 2 6T70/75/80
​​​​​​​Gen. 1 GM 6T70-75 Separator Plate IDs​​​​​​​
Solenoid Dampers