Saw one with a problem with the antenna housing. They replaced the radio before I came out and just grabbed the antenna and was moving it to get better reception. Teh antennas suck on the 03 and the side mount can have a problem too with the housing. XM aftermarket on the Hummer can suck becase of the windshield so vertical. Make sure they mount the antenna outside of the truck not on the dash or it will cut out every time you get near buildings or hills/mountians.
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