TransGo SHIFT KIT Automatic Transmission Repair Kit - Ford 6R SK 6R80-A FLB63731 Vehicle Applications: 2020+ GMC Sierra

Vehicle Applications: 2020+ GMC Sierra / Sierra Denali 2500HD / 3500HD - Regular Cab

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TransGo SHIFT KIT Automatic Transmission Repair Kit - Ford 6R SK 6R80-A FLB63731 Vehicle Applications: 2020+ GMC SierraTransGo SHIFT KIT Automatic Transmission Repair Kit Ford 6R Common complaints with these GEN1 transmissions are TCC shudder, rough coast down shifts, gear ratio error and solenoid performance codes. These complaints are the result of the wear in the pressure regulator (PR) valve bore and the pressure regulator valve balance bushing. Additionally, the torque converter clutch regulator valve design and calibration were in dire need of an upgrade to