TCI Shift Boss Transmission Programmer - Free Shipping on All Orders @ JEGS
TCI Shift Boss Transmission Programmer
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For performance GM 4L60E, 4L65E, 4L70E, 4L80E and 4L85E applications, the TCI Shift Boss is designed to ensure your desired shift firmness while monitoring important drivetrain functions, including line pressure and temperature. Offers three shift modes: Stock, Stage 1, and Stage 2. The Shift Boss warns you of potential problems (e.g. transmission temperature is too high). Simple to install and use, this programmer can be considered inexpensive insurance to monitor and diagnose transmission problems.
Easy-to-read handheld unit with digital screen
Powerful data logging and self-diagnostic capabilities
3 shift modes: Stock for OE shift characteristics; Stage 1 for firm, solid shifts; Stage 2 for race shifts
Monitor transmission line pressure (890-377560 only) and temperature while adjusting shift firmness
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