just go to crutch field it will tell you what you got....
how many speakers do you have and does it have onstar and what line silverado is it? 1500?
Single cab? Yes, the rears are a 4x6. The fronts vary, you can use either 6.5's or 5.25's. The 6.5 depends on the basket.... I've had some that fit, and some that don't.
