12-06-2013, 12:28 AM
The one in my Grand Prix would bleed down to 12.5v over 10 minutes and then go back up to 14.5 within a minute or two. My Dad's trailblazer does the same 
hrug: Engine RPM and accessory load didn't seem to matter. GM thing?
hrug: Engine RPM and accessory load didn't seem to matter. GM thing?
Why do people just post what they are thinking? Without thinking.
2012 Ford Mustang
1995 BMW 540i/A
1990 Eagle Talon TSI AWD
2012 Ford Mustang
1995 BMW 540i/A
1990 Eagle Talon TSI AWD