2007 Chevy Silverado V8 Four Wheel Drive Automatic 88000 miles
My 2007 Chevy P/U seems to have an alternator problem. When hot, the voltage will drop to 12.5 sometimes and stay there, then for no reason, jump back to 13.7-14. Engine revs or electral load don't seem to matter. It has every electrical accessory available with a 160 amp alternator. The battery is relatively new also. The voltage drop is slow, not sudden, as is the rise. I've checked every connection I can find, to the point of checking terminal grip. I was an ASE Master tech before closing my shop a few years ago, and would've sold a customer an alternator already. I'm on disabilty now, and $275 is a big chunk of money. Do you have any ideas of something I might've missed?
Tuesday, June 15th, 2010 AT 6:46 AM