- Dec 12, 2011
- 4,660
With my 2012 Yukon, I'm getting voltage spikes as well as uneven voltage on moderate to heavy acceleration. My headlights will noticeably flicker when this happens and the voltage will spike to around 15.2-15.5V...almost like it's bumping a rev limiter at half that frequency.
I did rinse my engine the day prior to my alternator going bad, I am careful to not soak the alternator or PCM.
No loose cables, even happens when I disconnect the connector on the NEG battery cable for load shedding.
I'm curious to understand if the PCM or alternator or both, regulate the voltage on this platform.
I have tried 2 alternators from Autozone and one from NAPA, am I just that unlucky? Lol.
All thoughts appreciated.
I did rinse my engine the day prior to my alternator going bad, I am careful to not soak the alternator or PCM.
No loose cables, even happens when I disconnect the connector on the NEG battery cable for load shedding.
I'm curious to understand if the PCM or alternator or both, regulate the voltage on this platform.
I have tried 2 alternators from Autozone and one from NAPA, am I just that unlucky? Lol.
All thoughts appreciated.