2000 Posts and climbing!!!
Join Date: Mar 2005
Location: New York
Re: Need help with 89 chevy 4wd front end
Your Chevy has a ridgid mount front differential that powers two half shafts. If you have not used the four wheel drive since summertime and just fixed the electronic accuater control you may have a water problem not allowing the unit to go into gear. Before I tore it apart I would get the truck insind and totally defrosted, then try to engage the unit. I own an 88 and one winter I had similar problems, but not the blown fuses, just would not engage. The truck got warm the unit work. Since then I have been better about keeping fresh fluid in it.My truck now has over 300,00o on it and that unit has not been apart, I have changed out the universals, half shafts, and hubs, but not done any repair on the differential.