1998 Jimmy Windshield Wiper Problem

I've been having problems with the wipers in my 1998 Jimmy. They work, but badly. Delay doesn't always work...if I try to use delay, sometimes the wipers function in the low or high mode, but not delay. When I turn them off, they will keep going for a minute or two, and then stop in the middle of the windshield. It's getting annoying, and since I don't have a warranty, I'm looking to repair them myself. Could it be the motor or the relay? I'm not sure where to start first. I'd appreciate any responses!

Wiper pulse board is bad.
Solder the circuit board crack or just replace it.
Run a search on here there shouldbe several threads /post on it.

Easy fix, 3 or 4 screws and about 10 minutes work.

http://www.partsamerica.com/ProductDetail.aspx?MfrCode=DOR&MfrPartNumber=88136&PartType=2040&PTSet=A