Sloverado

Thanks I got the tray, bolt, and holder on order along with another battery.

Is this the correct tray to add a second battery then? it doesn’t look to be but the the part number for my 17 doesn’t match what was on here

Bringing up old thread. I am looking to do this upgrade and I’m also have another question maybe someone can answer. I have a 170 amp alt and was wondering if the 84143539 220 amp would be a replacement for it? I have a 17 with the 6.2. My dealer ship wasn’t much help when asking