I have replaced mine with high end AGM batteries, and I have a 5F cap in the truck, too. High amp alts, strong AGM batteries have solved most of my problems. My Z used to drain my battery if I didn't start it and drive it at least once a week... now it goes about 3 weeks and I keep a NOCO trickle charger on it most of the time that can properly maintain an AGM. I used an Odyssey in the Tahoe and a Northstar in the Z. Awesome batts.
*Actually, the Tahoe has an Odyssey to run the stereo and a regular lead acid battery to run the truck. They're on totally independent charging systems. You can do that with triple alternators, it's handy.
*Actually, the Tahoe has an Odyssey to run the stereo and a regular lead acid battery to run the truck. They're on totally independent charging systems. You can do that with triple alternators, it's handy.