Tow / Haul Mode
Tow /Haul Shift Mode or Performance Shift Mode is available for 4-speed automatic transmissions (4L60 / 4L65 / 4L70 / 4L80 / 4L85) being controlled by an LS1 style PCM (Powertrain Control Module).
This additional shift mode is activated by a momentary switch - which allows the driver to toggle between Normal Shift Mode and Performance Shift Mode.
*** additional PCM programming also required ***
Tow /Haul Shift Mode or Performance Shift Mode is available for 4-speed automatic transmissions (4L60 / 4L65 / 4L70 / 4L80 / 4L85) being controlled by an LS1 style PCM (Powertrain Control Module).
This additional shift mode is activated by a momentary switch - which allows the driver to toggle between Normal Shift Mode and Performance Shift Mode.
*** additional PCM programming also required ***