TCI Shift Boss

Transmission Programmer

Engineers at TCI® develop innovative way to monitor your drivetrain’s most important functions while also allowing three stages of shift firmness programming.

All too often, performance street enthusiasts place emphasis on potential engine problems while critical transmission functions go unnoticed. Available for performance GM 4L60E/4L65E/4L70E/4L80E/4L85E applications, the new Shift Boss Transmission Programmer from TCI® is designed to ensure desired shift firmness while also monitoring the two most critical drivetrain functions – temperature and transmission line pressure (additional sensor required).

The Shift Boss features three unique shift mode choices – Stock for OEM shift characteristics, Stage 1 for firm solid shifts and Stage 2 for hard strip shifts. You can monitor transmission temperature or pressure (additional sensor required) by simply depressing the display button. Simple-to-use and easy-to-install, this performance programmer can be considered an inexpensive, easy-to-install shift improver, and temperature/pressure monitor for your transmission.

This handheld unit includes a digital screen with selection options for transmission temperature, shift psi (additional sensor required) and all three shift modes. The Shift Boss is sold as an individual unit or as a package that includes the additional pressure switch.

Features & Benefits:

• Programmer monitors transmission line pressure & temperature while adjusting shift firmness

• Designed for GM 4L60E/4L65E/4L70E/4L80E & 4L85Estreet performance applications

• Programmer includes three shift mode options – Stock for OEM shift characteristics, Stage 1 for firm, solid shifts & 

   Stage 2for hard strip shifts

• Easy-to-use handheld unit with digital screen

• Shift Boss sold individually or as package with optional pressure sensor

# 377550 (Shift Boss transmission programmer 4L60E-4L80E)