2007 Silverado engine and power problem

[Scorpyd]

When im going down the highway, normal speeds varies from 60-65, and the truck at times will act like it just shut off, the motor does too, and immediately gains “consciousness” after 1 or 2 seconds. Does that with the AC on too some times. Any ideas? We do have trouble with the battery’s hot (red) post, acts as it is broke inside, and had it tested at autozone as a good battery. Also sometimes when turn key, will not turn on any electronics, so i have to shake the red terminal on the battery until my lights are on or hear my door opening ringtone sounding. Truck has the 4.3 in it, tranny unknown want to say it is the 4l60e

[swathdiver]

Replace the battery.  Inspect the wires coming off the battery for corrosion and the grounds for corrosion.  Any codes?

[Supreme Pizza]

Sounds like a bad connection between the battery and the battery cable. It should be tight enough that you can not effect the connection by "shaking" anything. Try to rip the battery cable off with your bare hands. Try to twist it real hard. If you can get it off, or twist it at all - then its not tight enough. Also, get one of these: 

 

 

[txab]

Check both of the battery cables from end to end. There has been a problem with cables failing internally in the past. Many have been replaced

[5proms]

Replace both battery cables, easy fix.