1994 GMC Sierra Logo
Posted on Oct 19, 2010
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I have a 1994 GMC Sierra 350 auto 4x4. When I shift the truck into 4x4 the front drive shaft does not engage, what could be the problem?

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  • Posted on Dec 04, 2011
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Its probably your front actuator bolted on the pumpkin on the front axle it is a motor that controls a shaft that engages and locks your front end into fourwheel drive. It can easily be replaced by unplugging it from the harness unscrewing it from your pumpkin and installing the new one following these directions. Remember to disconnect the battery before doing this allowing your computer to reset itself.

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  • Posted on Oct 19, 2010
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If yours is electric shift, you will need a new shift solenoid installed in the tranny.

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I’m happy to assist further over the phone at https://www.6ya.com/expert/john_2c7bb9c157d0baa8

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