A: The 4WD Actuator Switch should be the possible cause of the problem on your Gmc jimmy . This Dorman - OE Solutions 4WD Actuator with part# 600-102 fits your 2001 GMC Jimmy.
A: For further assistance regarding the Dorman - OE Solutions 4WD Actuator, Vacuum, Front (Part# 600-102), please provide the year, make, model and engine size of your vehicle. This information would help us to assist you in a better way.
4WD Actuator (451100) by Alloy USA®. Reverse Rotation. The Alloy USA differential perma-lock kit is a permanent replacement for the failure prone OE vacuum disconnect system. The kit permanently engages the central axle disconnect (Cad) and couples both front axles. Once installed the axles will automatically engage as soon as the transfer case is placed into four wheel drive.