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Originally Posted by jwokmuba2
i have a 1988 chevy 2500 4x4 with a 5.7 liter tbi motor, the problem is that the 4 wheel drive is not engaging, i was wondering what it could be, someone told me the actuator would be the problem but before i spend 90 bucks, i what to know what else i could be?
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You will have to craw under there and have a look.
Is 4W shifting in good?
Is the front axle locking in?
Old style 2 wire actuator?
Check fuse to it.
Got juice and ground?
Have a look at the wiring plug in to it.