? about Radio w/ Six-Disc CD

[mmayo]

I've noticed that the radio in my '04 H2 is not as loud as the radio in my '03 Silverado. On the outside & on the window stickers the appear to be the exact same radio(although my '03 truck came w/ XM), but the H2 radio is not anywhere near as loud! The other differences are with the AUTO VOL & AUTO EQ. On the H2 I have either AVOL ON or AVOL OFF......my truck has AUTO VOL OFF, MIN, MED, & MAX. With the AUTO EQ my H2 has NORMAL, DRIVER, REAR, & SPACIOUS......my truck has CUSTOM & TALK. Do I have the radio I'm supposed to in my H2 or is it calibrated incorrectly? It just sucks that it doesn't sound as good as the one in my truck.........