Just a warning about the PIE stuff, they are usually ahead of everyone else because they rush to market and don't test anything. I was an early victim on there XM to Sirius conversion kit, affter 3 kits and 2 cables (at my expense) and 2 Sirius recievers (also at my expense). It worked a toatl of a year. I am sure the interface was blowing the Sirius recievers but couldn't prove it. I replaced it all with a much cheaper unit from Sirius made by DEI and have had no issues at all, works as promised for 1/3 the price, and the tech support was awful. What I usually got was "wow never seen that before" then some lame comment about the Hoky Poky, what a bunch of losers. Go with the GM unit I am sure you will be much happier even if it doesn't work with the iPhone.
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Red Bull Drift Team 2008
Solo Mach and High Flow Cat
Dejon Intercooler, Intake Elbow, BOV spring
Wester's Garage RACE tune II
JPM custom shifter.
Barney Juice with Militec-1
GM Auto-dimming mirror with OnStar and maplights
Rhys Millen Racing, RMR Style Bar.
Peak RWHP 286.3, Peak Torque 313 ft/lbs.
SSR Type C wheels, Bridgestone Potenza RE-01's
DDM Works PINK Breastplate
NASSOA In Great Company! Founding Member