Chev Silverado 4WD 5.3L


Old 03-04-07, 08:13 AM
Thread Starter
Join Date: Mar 2007
Location: B'ham area
Posts: 2
Angry Chev Silverado 4WD 5.3L

Bought new battery 'cause old one went caput.
New battery now showing low voltage after overnite installation.
Anyone know how I could test alternator at home?
Does my alternator have built-in voltage regulator?
Sponsored Links
Old 03-04-07, 08:25 AM
HotxxxxxxxOKC's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Jul 2006
Location: USA
Posts: 8,044
Sounds like something is drawing amps depleting your battery. Bring it to Autozone or a mechanic to see if there is a draw off your battery while vehicle is off.
Old 03-04-07, 11:21 AM
billys68ss's Avatar
Join Date: May 2003
Location: USA
Posts: 1,459
You didnt tell us what year, but since you have a 5.3, I know its fairly new. Yes you have a built in regulator as did most GM vehicles since the 70's. IF you own a DC voltmeter, you can easily test your vehicles charging system. Place the leads on the battery on their respective terminals while the vehicle is running and as long as you have over 13.5 volts you are charging. You could have something as simple as a light staying on inside the vehicle. I do know from experience, if you have the side post battery with the 2 cables running to the positive post, those cable ends tend to corrode inside the red rubber cover where you cant see it until you have to do battery service or just nose around in there. I have seen where the two cables contact one another get pretty funky and it will cause intermitent no starts and power loss to some functions.
Hope this helps ya,
Old 03-17-07, 06:08 AM
Thread Starter
Join Date: Mar 2007
Location: B'ham area
Posts: 2
Billy's reply to ibwukn

Thanks, for the info.....definitely got an alternator problem!!

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes