Instantly modify shift firmness while also monitoring critical functions of popular GM 4L60E/4L65E/4L70E/4L80E & 4L85E transmissions

Designed for GM 4L60E/4L65E/4L70E/4L80E & 4L85E applications, the new Shift Boss™ Transmission Programmer from TCI® allows instant modification of shift firmness while also monitoring critical drivetrain functions, including two of the most important – temperature and transmission line pressure (with optional sensor).

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, race-type shifts. After selecting your desired shift firmness, you can also use the unit to monitor transmission temperature or pressure (with additional sensor) by simply depressing the display button. Simple-to-use and easy-to-install, this small performance programmer is an inexpensive way to personalize your transmission performance while also “keeping an eye” on your transmission’s internal operation.

This handheld unit includes a digital screen with selection options for transmission temperature, shift psi (with additional sensor) and all three shift modes. For more information about the TCI® Shift Boss™ Transmission Programmer or any other TCI® product, call us at 1-888-776-9824, or visit www.tciauto.com