Question about 2003 GMC Yukon
The little lights on the bottom side of the side view mirrors (there's one on each side, neither one works), that illuminates the running boards, does not work, don't think it ever did since the truck was new. All other functions work fine, just no lights.
GM calls these the exterior illumination lamps. They receive power from the driver and passenger door modules. The lamps could be bad or something is preventing power from getting from the door modules to the lamps. The "repeater" turn indicators in the mirrors are powered separately so they could be OK while the illumination lamps are not
Posted on Nov 27, 2012
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Posted on Jan 02, 2017
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