5.3L Tahoe/Suburban front batt help!!

[MEMPHISFLEX 10+ year member]

Ok i want to run two batteries under the hood like the 1999> and older tahoes/subs,c/k pickups you could add a 2nd battery on the right hand side under the hood, but i want to run two batteries under the hood, and then ill have my two dekas 31s in the rear, but i need some help on how to do this, i got a 2001 Tahoe 5.3L by the way!!!

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[BoomBoomBoy 10+ year member]

Besides another battery, you'll need one of these:

http://www.db-starter-alternator.com/Battery%20Isolator/?sck=24709850&gclid=CMeU2qz8vJICFQkXiQodvw134g

 

[JRock10 10+ year member]

IIRC on the HD models, there is an option for a 2nd battery on the pass side near the firewall. you could mount the factory tray there (if not equipped) and place your 2nd there.