Sound System For 2009 Sierra Sle

[madstyle1]

is it true that if i change my deck on car it will remove my remote start and other features of my car? I just heard this from a friend and im not sure if its true. i bought all my sound system already and ready to install but i want to verify this first. thank you!!

[2009SierraZ71]

The warning chimes and the turn signals play through the left speaker. The Onstar also plays through the front speakers. Unless you add an adapter (such as PAC OS-4) you'll lose that functionality. XM will also be lost unless you have the steering wheel controls and the PAC OS-4 (From what I've been told - I don't have the steering wheel controls so for now I've lost XM - but didn't have a subscription, anyway) Volume for the Onstar is also controlled through the steering wheel controls, too. Mine is loud enough so I don't need it. However, the PAC OS-4 allows you to add a button to change the Onstar volume to 7 different levels if you want to add it.

[madstyle1]

so this wont affect my remote start?

[2009SierraZ71]

so this wont affect my remote start?

 

Not a clue. Someone else will have to answer that one. I don't see why it would but I don't know.

[havok88]

my system had no affect on my remote start