[06Z71~T]

Started with increasing voltage so checked and was told needed a new alternator. Replaced it and the issue has gotten increasingly worse. It not only red lines but is maxed out. When this started and i turned off the vehicle the voltage guage would stay at roughly 12 now it goes from½ inch passed 19 back down to 19. Has anyone had similar issues? 2006 tahoe z71



Thanks in advance

 

[Paulhvac]

05 Sierra done the same thing, alternator ect. I located every ground on the truck and cleaned them. Case dismissed

 

[06Z71~T]

I'm actually in the process of doing that now. Fingers crossed

 

[davester]

I would suggest testing w a voltmeter what you are actually getting.

 

[06Z71~T]

I would suggest testing w a voltmeter what you're

I would suggest testing w a voltmeter what you are actually

It jumps all over the place

 

[Paulhvac]

You can't hook directly to the battery meter will over load. Ground one lead to the block

 

[davester]

You can't hook directly to the battery meter will over load. Ground one lead to the block

WTF? Overload?

 

[Paulhvac]

Too many amps unless you have an expensive digital meter

 

[jglew82]

He’s talking about measuring voltage, which you should do at the battery. In-line amp draw is a different story.

 

[Paulhvac]

I've got a harbor freight meter $40 over load when checking voltage at the battery. Works on my hog though.

 

[jglew82]

harbor freight meter $40.

Yep

 

[davester]

There is no "overload" problem or need for any special kind of voltmeter to test voltage at the battery or most other parts of the truck.

 

[Paulhvac]

Very possible the new alternator is faulty. With the grounds all cleaned and accounted for it's got to be a bad wire or connector causing the issue. I would check for mouse damage also..
I'm still fixing the wrath of the little bastards.
FYI make sure mama doesn't put a bird feeder anywhere near your parking spot!