1992 350 Auto...all was OK...then went to leave one morning and the AC would not turn on(no compressor engaging, blower fan works)...then later that day it started down shifting from overdrive on a 3 hour trip...after a long frustrsting trip of downshifting erratically I noticed the lights were a bit dim...sure enough its not charging...11.xx volts while running. Alternator is less than a year old.....
Im suspecting maybe the ECM harness plug...will check that tonight...
Any thoughts?
Hans