2001 Tahoe 5.3 voltage problem

120

Asked by Jul 13, 2017 at 09:14 PM about the 2001 Chevrolet Tahoe LT 4WD

Question type: Maintenance & Repair

My 01 Tahoe just started having a voltage issue. It
drops off like alt isn't charging then will come back
up. Alt is only a year old. It will also drop and come
back up under acceleration. Also when I hooked up
my code reader to check live data and see what
engine was doing. I had no short term fuel trim
readings anymore. Am I looking at a bad
computer?  Volts read pretty high until today but
now just slightly above 14

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