Forget about Bose. In a GM vehicle, the difference between a Bose audio system and a non-Bose system comes to much more than the speakers. For one thing, there are more speakers in a Bose system. You'd need some different interior panels to replace the ones without speaker grills. You'd also need to have new wiring run to the speaker locations.
Furthermore, a Bose system uses a separate amplifier, and a different factory radio unit. Your truck doesn't have wires or plugs in the right locations, so it would have to be completely re-wired.
If you want to improve your sound, you can put together an after-market amplifier/speaker package that will be much better than the factory system. But don't look for Bose speakers; they don't make car audio equipment for the after-market. All Bose car audio is OEM.