4x4 Posi-Lok Chevrolet/GMC K Series

1500, 2500, 3500 Pickup, Suburban, Tahoe, Yukon

4x4 Posi-Lok replaces the thermal linear actuator with a cable operated actuator that puts the driver in control of the engagement from inside the cab. After engaging the transfer case, a one inch pull of the 4x4 Posi-Lok cable slides the shift fork and collar to connect the right front axle to the intermediate shaft and 4-wheel drive is engaged! Simply reverse the procedure to disengage 4-wheel drive. 4x4 Posi-Lok also works great with lockers! When the front axle is locked, you can disengage the passenger side in order to make turns without wheel hop.

1988-1998

1500, 2500 Pickup 6 Lug

1992-1998

Suburban, Tahoe, Yukon 6 Lug

Note: With Thermal Linear Actuator (TLA)

Part No. 800

$202.44

1988-1998

2500, 3500 Pickup 8 Lug

1992-1998

Suburban 8 Lug

Note: With Thermal Linear Actuator (TLA)

Part No. 1000

$83.78

1988-1998

1500, 2500 Pickup 6 Lug

1992-1998

Suburban, Tahoe, Yukon 6 Lug

1988-1998

2500, 3500 Pickup 8 Lug

1992-1998

Suburban 8 Lug

Note: With Thermal Linear Actuator (TLA)

Find a list of local 4x4 Posi-Lok dealers or purchase online at www.4x4posi-lok.com.

Thermal Linear Actuator

The colder the temperature, the longer it will take to engage.
If the front differential becomes submerged, the TLA temperature will cool and the 4-wheel drive will disengage.
The TLA unit can cause excessive wear on internal components in the differential and may cause other electrical problems.

4x4 Posi-Lok reduces front differential wear and right axle breakage.
4x4 Posi-Lok provides 2-wheel drive low range, giving the vehicle 4-LO torque at the rear axle with bind free steering only available in 2-HI. This feature is not available with factory systems and is beneficial when maneuvering trailers.
4x4 Posi-Lok will not disengage when ignition is turned off or the differential is submerged.
4x4 Posi-Lok is compatible with manual or electric transfer cases and installation can be completed in one to two hours with basic hand tools. No internal differential work is required.

Heavy-duty cable
Discreet dash mounting
Easy to follow instructions
Complete wiring system to ensure the 4WD dash indicator light functions properly

Part No. 1000: Perm-Lok

The Perm-Lok permanently engages the Central Axle Disconnect (CAD) system and couples both front axles. Once installed, the front axles will not pull until the transfer case is engaged.

Ideal for:

Fleet Operators
Emergency Vehicles

Installation is easy and can be completed in approximately 10 minutes.

4x4 Posi-Lok, www.4x4posi-lok.com
Copyright 2001 4x4 Posi-Lok—Patent No. 5,605,213