[schulte]

When sitting at idle, using the power windows will dim the interior, dash, and headlights. They seem to go a little slower than I'd expect them to. Is this a problem?

I've got the original single 145Amp alternator, and the original 2 batteries with ~100,000mi.

Does this sound more like a battery issue or an alt issue? Would installing an additional 145Amp alternator help?

 

[carlosh]

What is your amp gauge doing when you roll them up or down?

 

[btfarm]

I'd guess one of your batteries is about done.

 

[big truck big power]

it does this on my moms burban (05)

 

[deepsouth]

Likely a battery. Do you smell sulfur when the a/c is on or the fresh air is on? Just replaced both of mine, had the same symptoms and the awful smell.

 

[schulte]

No smell as of yet, but I'm having other issues with them now too, so I think it may be about time for new ones; I just accidentally froze both of them last night by leaving an inverter running in the truck. We'll have to see how they feel tomorrow...