Hey guys, hopefully someone has seen this problem before. I've got a
1996 Yukon, and although the headlights work, the turn signals work,
brake lights work, 4-ways work... the running lights and dash lights
I've checked the fuses inside the truck and none are blown. I was
also having a problem with the windshield washer pump, and I knew the
problem was the multifunction switch in the column because if I
wiggled the turn signal lever just right I could get the juice to
squirt. I had replaced the darn thing last November because my brake
lights quit working, and it was still under warranty.
I just replaced the multifunction switch tonight, now the windshield
washer pump works properly... but this did not fix the running light
problems though. At this point I'm suspecting the big headlight
switch, but I'm really not sure. I tried poking a few of the
terminals with a test light while turning the switch on and off, and
there seems to be only one wire going 'hot' when I turn the headlight
switch on. That seems kinda weird to me, with as many wires coming
out of this switch, I'd suspect at least a few of them should go hot
when you turn the lights on.
I've got a Haynes manual for the truck, but it's so vague and covers
to many years in such few pages that the wiring diagram is all but
useless. Has anybody seen this problem before? Can anyone comment
on which wire coming out of the headlight switch is used to turn on
the running lights?
Can someone also point me in the direction of a source for a good shop
manual for this truck that is a reasonable price?
Thanks for any help in advance.