Thread: Electrical system under powered? Dim's and drops in voltage when stopping?

I had that on my 03. The only thing that fixed it for me was the "The Big 3". :/

EDIT: In fact, what helped the most was running a line directly from the alternator to the positive terminal at the top of the fuse box under the hood.

Just wanted everyone to know that I did the "big 3" and it fixed my electrical issues. I think it was a combination of corrosion and the weak job GM did wiring these cars. Now that I've run a power wire from the alt to fuse box, and fuse box to battery. I'm seeing much higher voltage and no more dimming of lights from my stereo even with everything on.


Hope this helps !