Voltage issue. NEED HELP!!!!!!!
Heel & Toe
Joined: Dec 2000
Posts: 24
Likes: 1
From: Bedford TX
Engery saving alternator.
I didn't see if mentioned that your battery was discharing, I was told by a service guy at my chevy dealer that the new alternators had voltage sensing circuits to stop charging when the battery reached a certain voltage.
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
Seat Heater = Service Charging System on my car
I noticed that I only have the "service charging system" when I have my seat heater on (it gets a little chilly in the winter driving to work with my top down at 5 am).
Just a data point. No seat heater, no charging system error. I think I'll just turn the heater on. Matter of fact need to make sure it works anyway!
Just a data point. No seat heater, no charging system error. I think I'll just turn the heater on. Matter of fact need to make sure it works anyway!
Intermediate
Joined: Jan 2007
Posts: 33
Likes: 0
From: Houston TX
I've also been having the "service charging system" error almost since the day I've owned the car. Dealer has had it 3 separate times now for a total of about 2 1/2 weeks and even had an engineer fly in to check it out. They have never found any problem and have replaced wiring harnesses, alternators, computers. Couple of observations - seems to increase frequency of the error messages as outside temperature increases. Primarily happens only at idle in drive at a stop light although several times I have got it as I'm accellerating away from a stop. If I give it a bit of gas at idle or in park, the problem never shows up. Could this be solved by bumping the idle speed up in the computer a bit?
