A whole lot of late model chevys, 95 and up, have the wiper problem. They will work sometimes and sometimes they won't. There was supposedly a recall for it so try your dealer for info. Mine won't work at all 60% of the time. I have not tried the dealer yet though.
Ok one more time Check the little black box under the hood on the firewall, right next to the wiper motor. Take out the circuit board, flip it over, you will see some solder points cracked, re-solder them and you'll be good to go. My '94 did this when I first got it. I fixed it that way, its been perfect ever since!
Being in So Cal, where you hardly ever need wipers, I've found that you can just reach out your window and "persuade" the wiper to work and then they work fine. There's a known problem with these. Either take BigBlue's idea, or go to a dealer and get it fixed or do what I do - "persuade"
if there isn't a recall (i'm not sure about that), and you don't want to try the solder idea, it's a really simple task to replace that circuit board. They sell a little kit with the circuit board and a new cover for about $25-35. All u gotta do is unplug the harness, take out 3 bolts (or is ti 2, anyway), pull out the old board and stick the new one in, then replace the cover. That's what I did to fix my 97, which had developed a mind of their own! Then I found out there might be a recall.
yea i would check the circuit board but if everything looks fine it very well might be the wiper motor. last year my roommates 96 did the exact same thing and it was the wiper motor. $50 i think and now they work perfect
* Earnhardt Forever *
89 Chevy K1500 - 350TBI/700R4/NP241 - 3" lift - 33's - other goodies, but not enough! [img]/wwwthreads_images/icons/tongue.gif[/img]