My wife's 2002 4.2l Envoy is rarely driven, 70,000 miles to date. Tried to start it a couple of times last week and the battery
wasn't holding it's charge. Replaced battery last weekend and seemed ok. Then started it up yesterday and while driving it the ABS
lights, airbag lights, other brake
dummy lights began coming on and off. The battery voltage meter would go from 14V down to 9V and back and forth. Took it down and had alternator
tested. Tested OK, but decided to replace anyway because it is 14 years old after all. So after replacing battery and alternator I am still having the same issue. Any ideas?
JA: Is it just the ABS light? Or is the brake system warning light on, too?
Customer: It's really all the dummy lights on the lower left of dash. plus the voltage meter going wacky
JA: Are you fixing your Envoy yourself? What have you tried so far?
Customer: battery and alternator
JA: Anything else you want the mechanic to know before I connect you?
Customer: no, familiar with cars, my family all have retired from GM