Chev Silverado 4WD 5.3L
#1
03-04-07, 08:13 AM
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?
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?
#2
03-04-07, 08:25 AM
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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.
#3
03-04-07, 11:21 AM
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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,
Billy
Hope this helps ya,
Billy
