How do you fix windshield wipers on a 97 GMC Jimmy that won't turn off?

Answer 1

First of all, there was a factory recall relating to wiper problems on '96 & '97 Jimmies. Too late now to get a dealer to cover it. The problems were due to cracked solder joints on the wiper controller circuit board, which is mounted under the plastic cover on the wiper motor housing. Some guys have had success re-heating/resoldering the joints where the electrical connector attaches to the board. Most ended up paying about 40 bucks for an aftermarket wiper controller board or got raped by a dealer for a genuine Delco replacement. Another thing to check (actually, the first thing I'd check since they won't turn off) is whether or not you have voltage at either the gray or purple wires at the wiper motor connector with the switch off. If you do, your wiper switch is most likely shorted internally. Not fun to replace. Not unless you like chasing after small, oddly-shaped pieces that fall out of the steering column when you take it apart and then later figuring out where they go.