Question about 1999 Chevrolet S-10 Pickup

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Front differential problem

I own a 97 chevy s10. My 4wd is not engaging and was told at first I need a vacuum activated switch then after asking if the vacuum hub lock switch was right one I was told to find a front differential switch which confused me even more. Which switch needs replaced correct name and how tos would be appreciated.

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Well if it is the vacuum actuator then, i'll explain how to fix it. But first it is a vacuum controlled diaphram that is located under your battery. All you do is take your battery out, you'll need a 5/16 wrench or and 8mm to disconnect the battery connections. Then get yourself a 3/8s drive wratchet and a 8 inch extension,a 1/2 deep well socket to take the battery hold down off, which is directly down from your battery on the side faceing your window. Then after your batterry is out there is a pan that your battery was sitting on now use your 1/2 socket and your wratchet and take that pan out. then you will see this round black thing with 3 6mm bolts holding it on take that out and disconnect the cable going into it is just a little clip holding that on. Then disconnect the vacuum hose going to that it just pulls off. then take that to your junkyard and ask for a new one or go to a parts store if you have any more questions just ask

Posted on Jan 30, 2009

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Thank you for using FixYa.

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