Mechanics

BUICK TERRAZA WHEEL PROBLEM

2005 Buick Terraza

2005 Buick Terraza All Wheel Drive Automatic

all wheel drive disabled light stays on. Fuse is good. Only front wheels drive currently, no rear wheel drive. What next?
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Bill Sprague
November 10, 2009.



There is a common failure in the AWD system. It is the differential clutch pump actuator check valve. This is the small sensor that is mounted in the rear end. It will have a couple of wires going to it. It is #28 in the picture.


http://www.2carpros.com/forum/automotive_pictures/102900_630742_1.jpg


Dennyp
Nov 20, 2009.