2023 suburban RST aux battery tray GM # 84817040

[ndamico]

has anyone installed this or know anything about it? i can find diagrams of it, but not where it goes, what size battery it fits, etc.

thanks!

 

[UsualSuspect]

Might want to take a look at this thread. I doubt there is much difference between the year models. https://www.tahoeyukonforum.com/threads/dual-battery-setup-using-oem-parts.131917/

 

[jforb]

except they redesigned the front body of the truck, adding lots of heft where the battery used to go?

 

[ndamico]

Yeah, no room there. The read kit I pictured is a better spot for my use but I can't find anyone who has actually installed one .

 

[DougAMiller]

Yeah, no room there. The read kit I pictured is a better spot for my use but I can't find anyone who has actually installed one .

I have looked into the aux battery placement on the current generation, and from what I can tell, it is mounted behind the driver's side panel in the rear cargo area where the subwoofer would normally be. I found some information showing this in the PPV documentation. It appears that the aux battery for PPV applications may be a lithium ion battery that is about half the size of the main battery. I'm having trouble finding the documentation where I saw this though.

 

[ndamico]

Yeah that's where it goes. I can't figure out how big the battery can be. I'm going to put a lithium in, but still searching for documentation. Called my friend at the dealer parts dept and part is available but they couldn't produce any documentation

 

[DougAMiller]

Found the PPV documentation, here's a link to it:

https://capfleet.com/wp-content/uploads/2021/06/2021-Police-Tahoe-9C1-Municipal-Specification-Guidev3.pdf

Aux battery is on page 25. On closer inspection it does appear to be a conventional lead-acid battery, but seems to me that it would have to be much smaller than the main battery to fit there.

 

[jforb]

Interesting...my LS Tahoe doesn't have the opening it would fit in.

 

[DougAMiller]

I suspect the interior trim with the access panel is a police package specific part.

 

[ndamico]

Thanks I'm going to try it. I'll just remove the trim panel when I put the battery on and put it back on when I'm done.