Thread: Comfort Access
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      10-16-2014, 01:15 PM   #5
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Drives: 2004 3/4 ton Duramax
Join Date: Aug 2007
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Quote:
Originally Posted by jiggz View Post
I'm not sure you can distinguish Premium Sound, visually. Perhaps vs the base audio system (S645A) on the 2011's but on the 2012/2013's with Hi-Fi sound (S676A), I don't know if that's possible?

Also, side-view cameras mounted above the front reflectors indicate Technology Package on 2012 and 2013 models (side-view was a stand alone option on 2011's).

Honestly though, you should run the VIN if you can. You can do it on your phone in just a few seconds.
I believe there are two extra speakers in the back if you have Premium Audio.

Standard audio:


Premium audio:
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