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Discussion Starter #1
i know there are tons of threds on this just cant find a helpful one i guess lol PLZZ SOMEONE HELP ASAP:confused:
 

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Probably vacuum pump, you have an electric vacuum pump on the passenger side fender I believe it's a black box.
 

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check your vacum lines going to your auto locking hubs
 

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You could try putting it into 4wd...see if your hubs enguage.
By pass some of the lines look for small splits...like at a heater core bypass switch, elbows right at the pump etc. I have never really seen many vac pumps go bad, but plenty of broken connectord or esof hoses rot.
 
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