1994 GMC Yukon Wiper motor and switch

Tiny
HAPPIEBOYY
  • MEMBER
  • 1994 GMC YUKON
Electrical problem
1994 GMC Yukon V8 Four Wheel Drive Automatic

Well, my wipers stopped working... Checked the fuse and its good , even replaced it. Replaced the wiper motor, twice! I even replaced the wiper switch. Still nothing..no noise coming from the motor. The wiper fluid motor works and even the blinkers too! Im stumped! I did find out one thing, when i turn my ignition switch back the motor makes sum weird noise like its stuck..no noise on the on position! Can you please help!


http://www.2carpros.com/forum/automotive_pictures/553836_tn_1.jpg

the pic is of a part that goes on the switch..just cant remember were it goes?
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Saturday, July 24th, 2010 AT 1:07 AM

3 Replies

Tiny
RASMATAZ
  • MEMBER
Hi happieboyy, Welcome to 2carpros and TY for the donation

Sounds like the wiper motor control module is defective. Been trying to locate that part on the pic but I cannot come up with it on Mit1 and Alldata Auto references its not showing,-sorry

Circuit Operation

The pulse-type Wiper/Washer System includes an operating mode in which the Wipers make single strokes with an adjustable time interval between strokes. The time interval is controlled by a Solid-State Pulse/Speed/Wash Control in the Wiper Motor Module. The duration of the relay interval is determined by the Pulse Delay Resistance in the Wiper/Washer Switch.


http://www.2carpros.com/forum/automotive_pictures/12900_wiper_3.jpg

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Saturday, July 24th, 2010 AT 7:11 AM
Tiny
HAPPIEBOYY
  • MEMBER
I already replaced the whole wiper motor twice. New module on both motor assemblies. Are the ones on the new motors defective? I could understand if it was the original motor but a new one? Im confused.
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Saturday, July 24th, 2010 AT 10:22 AM
Tiny
RASMATAZ
  • MEMBER
Recheck wiper fuse 35amp again, and check for power when you engage the wiper on the wiper motor pink wire and also test the ground circuit-See below


http://www.2carpros.com/forum/automotive_pictures/12900_w1_9.jpg




http://www.2carpros.com/forum/automotive_pictures/12900_w2_8.jpg

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Saturday, July 24th, 2010 AT 3:38 PM

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