2007 GMC Sierra V8 Four Wheel Drive Automatic 34500 miles
On my 2007 GMC Sierra the wiper motor wont shut off even w/ the ignition off, the intermittant speeds dont work, only a regular speed and high speed work. Washers work OK, directionals and high beam works OK which are controlled on the same lever that controls the wipers. I took a 12V test light and connected to the connection that goes into the wiper motor. I got power from the black wire and the black/white wire but I got nothing from the Purple, DK Green or yellow. Should I get some power from any of these 3 colors when I have the ignition on and the wiper switch on one of the intermittant speeds or high speed? Also I can hear a relay making noise when I first put the high speed on. Where are the relays located for the wiper motor. I can only locate the 25A fuse for the wiper motor. Also there is a M located on the wiper motor diagram, is that M for the module that is built into the the wiper motor and could that be my problem?
Monday, October 18th, 2010 AT 11:38 AM