1999 GMC Jimmy V6 Four Wheel Drive Automatic 116000 miles
I have recently run into some electrical trouble with my 99 GMC Jimmy. New battery alternator and starter, but still there was trouble starting in the mornings after sitting over night. I've found, by attaching a test light to the negative cable and the negative post to the battery that the RDO/BAT fuse 19 is the culprit, or at least the majority of my drain. Problem is that it controls the speedometer, Tach, Radio, and Heating and cooling. I've had the dash apart and unhooked the radio, hoping it was the main problem but the light seemed to persist, although the test light did fluctuate/pulse with the radio plugged in. Speedometer and tach have acted up before, rapidly jumping and reading the wrong speed, but not for a while. If you have any ideas on what to check I would greatly appreciate it.
Saturday, December 1st, 2007 AT 9:15 PM