Possible Fuse Or Relay Problem? 2003 Yukon

[yukonstein]

My wife started the truck today, and phoned me to say the ABS and brake warning lights were on. She could feel no difference with the brake pedal so she carefully drove home. Along the way she realized the digital temp and compass display in the RV mirror were out, and the AC was blowing warm. She stopped and turned the truck off, then started it again. All warning lights went through the normal start-up sequence, the mirror display came on, and the AC blew cold. No more brake or ABS warning.

 

When she came home I had her stop and start the truck again so I could watch. Nothing unusual. At idle the battery guage went from just shy of the halfway mark to sitting just on the high side of the halfway mark (isn't that really the alternator guage?). All other guages appeared normal. We turned climate control off then on again. I could hear the AC kick in just like normal. I expected some movement in the battery guage with the extra load but really didn't see any.

 

Is what my wife noticed when she started the truck for the first time an early indication of trouble in the ingnition wiring, the fuse or relay panel, or something else?

 

Thanks.

[C. Charles Hahn]

I would lean towards it being an indication of a fluke, unless it happens again.