[Shop-talk] mystery cables

[David Scheidt]

> On May 10, 2021, at 10:47, john niolon <jniolon at att.net> wrote:
> 
> 
> working on windshield washer problem today on a 2008 chevy suburban and found two
> mystery cables.  Behind the under hood fuse panel in front of the firewall (drivers side
>  
> neither look like they have ever been used and the truck has 165,000 trouble free miles
> so I'm wondering what they might be for.... surely one of you guys is a chevy wiring guru, eh ??
> pics below

Not uncommon for manufactures to use a single harness for multiple trim lines. Could wet be go something your truck doesn’t have, like a second ac, or the rear seat DVD players.