Quote:
Originally Posted by Peyton7392
Bad alternator maybe? I noticed on my way to work today, on the interstate I didn’t have any lights for 10-15min, but I did a small pull and changed lanes and it made service stabilitrak flash, no lights again after I let off and went back to cruise.
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Bad alternator is a possibility, particularly if you have a bad diode and AC is going out. This can be tricky to detect, but maybe modern all-in-one alternator testers pick this up. If there is a bad diode you can get unregulated voltage spikes at higher rpm's.