Voltage meter

[alaska_guy]

Battery light is indicating an issue. You need to load test your although and battery, voltage measurement isn't enough.

 

[mo2058130]

What is the voltage of your battery after 12-24 hours?

It’s been doing this for a couple of weeks. Up and down at diff. Times.


2005 GMC Yukon XL

 

[mo2058130]

Battery light is indicating an issue. You need to load test your although and battery, voltage measurement isn't enough.

Agreed! Hopefully tomorrow.


2005 GMC Yukon XL

 

[mo2058130]

Went to Autozone the guy owned an 02’ Avalanche and seemed to know what he was talking about. But he said they don’t load test. Only batt, starter, and alternator check. All of which passed no problem.
[emoji2369][emoji2369][emoji2369], when I get home on Monday I’ll disconnect the batt for 30 min. And see what happens.


2005 GMC Yukon XL

 

[ftwflh]

I have had this problem and it turned out to be he voltage regulator/alternator. Put 2 AZ reman alternators on before I threw a fit on the 3rd one and had them replace it with a NEW one.( the reman ones work for a week or so then went bad) The new one has been ok for a few months now.

 

[mo2058130]

I have had this problem and it turned out to be he voltage regulator/alternator. Put 2 AZ reman alternators on before I threw a fit on the 3rd one and had them replace it with a NEW one.( the reman ones work for a week or so then went bad) The new one has been ok for a few months now.

Anyway to test it other than replace it?
And wouldn’t the battery die after a few starts?
Thanks.


2005 GMC Yukon XL

 

[Lt Belspur]

Turn your voltmeter to AC. See if you show any voltage.

Most likely the voltage regulator is going bad.

 

[mo2058130]

Turn your voltmeter to AC. See if you show any voltage.

Most likely the voltage regulator is going bad.

31.5 v on A/C


2005 GMC Yukon XL

 

[mo2058130]

Disconnected for an hour.
This is with ignition on but car not running


2005 GMC Yukon XL

 

[mo2058130]

Car running no accessories

2005 GMC Yukon XL