I posted, a few weeks back , a question as to how to get the wipers off a
1989 s10 ; the answer is: you pry them off; I used a screw driver on one, and the claw of a hammer on the other; they are held on by splines on the shaft base; the tab you'll see fits into a recessed ring on the base of the shaft, but playiing with that is pointless.Just get some lever under the base of the wiper and push them up, away from the hood.Not so obvious, Chevy.