GM K1500 Front Axle Disconnect Cable Lock Conversion Kit

This is a cable lock conversion kit (reference PSL600) for the front axle shaft disconnect on older GM 4WD trucks and SUVs. It replaces the factory heat-activated actuator with a push-pull cable, so the driver engages and releases the front axle by hand. The kit includes the cable with its control knob, mounting brackets and the hardware to install it.

Listed fitment, 4WD only: 1988 Chevy and GMC K1500 and K2500, 1992-1998 Chevy and GMC K1500 Suburban, 1995-1998 Chevy Tahoe, 1992-1994 Chevy Blazer, and 1992-1998 GMC Yukon.

The problem it solves: on these trucks the front axle is locked in by a sliding collar on the passenger side axle shaft, pushed by a thermal actuator that heats up when 4WD is selected. Actuators burn out, connectors corrode, and even a good one can take a long time to engage in cold weather. The result is a transfer case in 4WD with no power going to the front wheels, or a front axle that grinds as the collar tries to catch. A cable takes the electrical side out of the equation.

Install notes: before blaming the actuator, pull it and check for power at the connector with 4WD selected, since a blown fuse or broken wire gives the same symptom. Mount the cable end at the axle with the supplied brackets, route the cable up to the cab away from the exhaust and steering, and the knob is mounted where the driver can reach it. Select 4WD at the transfer case and pull the cable, rolling the truck slowly if the collar needs to line up. Release the cable before going back to 2WD on pavement.