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Message: <blockquote data-quote="03_sierra" data-source="post: 22028" data-attributes="member: 12063">Hey guys. I’ve got an 03 sierra with the auto dimmer switch and slider hvac controls. The instrument cluster works aside from the backlighting. The hvac controls work aside from their lighting. And the dimmer functions as it’s supposed to aside from the two lights for the automatic headlights, the auto on and off light. Everything was working as of yesterday morning and I’m wondering at this point if I’m having a bcm issue? I don’t know. Any insight would be helpful./Edit: solved! TBC 2a fuse terminals weren’t making connection!</blockquote>