What's the 2011 gmc sierra speaker size?

The 2011 GMC Sierra is equipped with 6 inch by 9 inch front door speakers; 6-3/4" rear door amplifiers and a center console mounted one that measureS5 1/4". The Sierra's SLE trims also come standard with speed sensitive volume controls; 3 months of satellite; an AM/FM stereo; a mast antenna and 6 total speakers. The Sierra's upgraded SLT includes all these features but increases Audio quality with Bose Premium sound; 1 subwoofer; a USB connection and 7 speakers. Other standard amenities across trims include cruise control; seatback storage; a leather and simulated alloy steering wheel; front and rear cupholders and front and rear reading lights. Steering wheel Audio controls are offered on the SLT trim only.