Window Switch-Intermittent-Fixed

[lunytnz]

Just a quick post to share how I fixed the intermittent problem with the window switch in the rear passenger door in my 99 Yukon. After reading some other posts about cleaning the contacts, I gave it a try and it worked. This is a small switch, so I used some super-fine 400 grit sand paper to clean the copper contacts.

 

Both the FSM and the Chilton manual were little help about how to get the switch out. I used a regular screwdriver from the back side of the switch to press in on the spring clip and pry the switch up and out. There's one clip on the side to release the wiring harness (ignore the blue pieces) and then pry off the tan switch cover with a small flat-blade screwdriver. It's kind of tricky, but you *can* use a small screwdriver blade to separate the top of the switch from the bottom and there will be two copper contacts underneath. I cleaned both sides of them, just in case, by sliding the sand paper in between the contacts, closing the contacts, then pulling the sand paper out. Pay attention to which way the switch is pointing when you take it apart; it is possible to put it together backwards (don't ask me how I know that) and be careful not to lose the two small springs.

 

Hope that helps you if you're in the same boat! The switch is $50+ at the dealer and $25 at the wrecking yard, so it seemed worth the time to fix it, rather than spend the same (or more) time to get a new part.