TransGo THM 4L80E: 1991-On

TransGo THM 4L80E: 1991-On

The TransGo THM 4L80E: 1991-On is a high-performance reprogramming kit engineered to improve shift feel, prevent internal wear, and handle higher horsepower applications. It addresses common 4L80E issues such as soft shifts, burnt direct clutches, and pressure regulation problems.

Key Features

• Includes high-durability boost valve and bushing assembly
• Dual feeds the 3rd gear clutch to significantly increase torque capacity
• Reduces direct clutch burnout and improves shift responsiveness
• Protects transmission cases and drums against excessive pressure spikes

Fitment

• 1991-On GM 4L80E Automatic Transmissions
• 1991-On GM 4L85E Automatic Transmissions

Note: Please verify transmission model and vehicle application prior to installation.