Question about 1990 GMC Sierra

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No 4x4 changed front diff already and still no 4wd K2500 4x4 1990 when i shift to 4wd it does nothing the light on the diagram dont even light up

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  • ccn7 May 11, 2010

    What do you mean you chg. front diff.? Did you chg. the acturator in front diff.? Did you test light the plug to see if you got power to acturator? Need a little more info.

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Its the accuator,59.00 at parts store easy change

Posted on Feb 15, 2009

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