TCI Shift Boss Transmission Programmer
- Perfect for GM 4L60E & 4L80E street applications
- Comes with three shift modes Stock, Stage 1 and Stage 2
- Analyzes critical transmission functions, transmission line pressure and operating temperature
The Shift Boss is designed to provide the desired shift firmness while monitoring significant tranny functions, including line pressure and temperature. It lets you know of any warning signs of potential problems and can be used to diagnose transmission problems.