Can someone tell me if a 2005 GMC Sierra/SLT will have a small speaker located on the drivers side Pillar, I need to know so I know which gauge pillar to buy.

If it has the Bose stereo, which I assume it will since it's a SLT, then I'd be willing to bet that they still have the tweeter in the A-pillar like the '03 and '04s.

Yes, It does have the Bose system, so I guess I can assume that it will have the tweeter on the pillar, Thank You