Mark, vss (speed sense) should be dk grn w/ white at cluser or pcm blue plug #21. Parking brake is lt blue at switch or bcm black plug #A31. GMAH is pretty much plug and play as far as onstar is concerned--it should keep onstar intact without any wiring mods. did you connect the 2 purple wires together at 24 pin plug? When you say you can't select a destination, that may well be because the unit is not seeing the correct parking brake signal and won't let you select many items until it is properly connected.
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\'05 Slate Blue Sut w/ Magnusun, JBA headers, custom exhaust, 22\" MC2 RT5 wheels, Pioneer AVIC Z1 nav, Passport SRX, Vizualogic A1000 dual, bi xenons, fog xenons, dual optimas, and just gettin\' started!
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