Charging/Battery/Alternator DENALI GAUGE

[MikeP]

Yukon Denali 2008
Hello I´m trying to now what’s the normal behavior of your denalis charging gauge when the motor is in normal drive. My doubt is because mine moves a lot, for example, in the morning the gouge when I start up the truck, goes directly past the 14v, but when I drive around it drops to the low 13 almost 12v. Sometimes it will go for days on the top 14´s, and sometimes It will go down and back up in the 15 mile drive.
Is this normal? Or do I have a bad alternator?

THX
MIKE

 

[NathanJax]

that's normal. I forget exactly why the computer does this, but it's computer controlled and normal

(Sorry, I know that's not a lot of info, but someone should chime in soon on the exact reasoning)

 

[NathanJax]

quick search on the forum...

internally regulated on voltage

Impossible to tell, the ECM uses some complicated algorithm to adjust the voltage.

http://www.tahoeyukonforum.com/forum/showthread.php?t=42594&highlight=Alternator


etc.

 

[MikeP]

Thx

that's normal. I forget exactly why the computer does this, but it's computer controlled and normal

(Sorry, I know that's not a lot of info, but someone should chime in soon on the exact reasoning)

Thx for the info!

 

[blairian]

I noticed the same thing on my Tahoe - glad to know it is doing what it is supposed to be doing!

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