Ok, this is my first post here, so be kind :money: i have read many, many posts about getting 4wd fixed on these trucks and so far I cannot find my exact problem. here is what I have. 96 k1500 push button 4wd. When I push the button for 4hi, I hear the t-case switch and the front shaft turns, but the light just blinks, so it looks like t-case is fine. i replaced the actuator on the front end,only To find that there was a corroded terminal on the t-case switch, which I replaced. When I push the the 4wd button I don't get 12v to the actuator, but if I take the t-case switch off and manually move the ball on it, the actuator gets 12v. So the problem seems to be with a vacuum(?) in the t-case?? I cannot seem to find any diagrams or anything on this anywhere. If anyone has any suggestions, I would be grateful. This is just my kick around truck, so I don't want to spend a buch of $ at the shop, but I would like 4wd to work for winter. thanks!