indicator light does not illuminate when heated winshield washer system is engaged
Presumably the fuse is the first place to look. According to the owners manual, the circuit uses a J-Case fuse in the fuse block under the hood (location 69). What is the current rating for this fuse?
It should be stamped right on the fuse, if not then it could be listed on the lid of the power distribution box.
Search GMC Yukon Questions
GMC Yukon Experts