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Tahoe & SuburbanThe power, space, and brutal towing ability make the Tahoe and its longer sibling, the Suburban, arguably the best full size SUV's on the market today.
Ran over some rough RR tracks and my Battery Not Charging Light came on and started flickering. Was able to make it to an Autozone as it was the closest place to check my alternator. By then the battery was almost completely dead so I went ahead and bought a new alternator and replaced it. I don’t think it was a remanufactured I think it was new I don’t know for sure. So after replacing the alternator it’s started to give me really weird issues if I revved up about above idle the volt meter would spike up to about 19 V, my service airbag light would come on, the fans from air conditioner anything I had a running with cut off until the motor idled back down and then it everything with normalize. Replaced the battery with a brand new one thinking maybe I killed it beyond use. Still have the same exact issue. I have some sort of electrical issue somewhere or maybe the new alternator is bad. Volt
meter on the alt when above idle is putting out 18v, is that normal? Help!!
Normal idle 2k rpm Voltage from alt at 2k rpm
Last edited by jwinters99; January 22nd, 2022 at 1:01 PM.
Reason: Add pics
Fixed - was given a bad “new” alternator. Removed and swapped and issues went away.
Fixed - was given a bad “new” alternator. Removed and swapped and issues went away.
QUOTE=jwinters99;475126]Ran over some rough RR tracks and my Battery Not Charging Light came on and started flickering. Was able to make it to an Autozone as it was the closest place to check my alternator. By then the battery was almost completely dead so I went ahead and bought a new alternator and replaced it. I don’t think it was a remanufactured I think it was new I don’t know for sure. So after replacing the alternator it’s started to give me really weird issues if I revved up about above idle the volt meter would spike up to about 19 V, my service airbag light would come on, the fans from air conditioner anything I had a running with cut off until the motor idled back down and then it everything with normalize. Replaced the battery with a brand new one thinking maybe I killed it beyond use. Still have the same exact issue. I have some sort of electrical issue somewhere or maybe the new alternator is bad. Volt
meter on the alt when above idle is putting out 18v, is that normal? Help!!
Normal idle 2k rpm Voltage from alt at 2k rpm[/QUOTE]