I have a spot for a second battery in my 07 suburban and just happen to have a extra brand new DieHard SUV battery that I just don't want to let sit a rot.

What will I need to install the DirHard battery in my suburban if it is at all possible?

Would it be abenefit or an over killon the alternator?

 

I was wondering the same thing. I have had issues with the BCM running the battery down and even after 2 trips to the dealership the battery still seems to run down quickly. Although we do a lot of lake & tailgating with the rear hatch open & radio on. I think adding a second battery would help with this situation. Just leery about adding anything to the electrical system on these high tech machines.
Can this be done safely w/o voiding any warranty items, etc...?

Thanks for any feed back...

 

There is a post on here about the second battery tray. ZX gave us all the info. I don't know exactly where the post is.

Paul

 

I think this is going to be my first mod. Would this void my warranty?

 

Try doing a search on second battery. One of the threads mentioned a GM harness to use to do it with so shouldn't affect your warranty.

 

One of the members here had the dealer do the install just to be safe

 

https://chevroletforum.com/m_14625/tm.htm

 

Not too sure about understanding those schematics, I'll go check with my service dept. Should be fun...