Hey i have an 05 GXP love the car exceot for some tranny issues that are being fixed but i see that you could get nav systems for these cars i currently have the stock monsoon deck it my car right now but i like the looks of these nav systems. could someone tell me how hard it would be and how much a new headunit from Gm would be?

This was just recently discussed.

viewtopic.php?f=8&t=13552

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3.5" MPS, 1.84 Rockers, 3" DP, Frt PEM, 39lb Injs., PowrTuner, Wizair
14.07@ 98.85mph 2.180 60'

easy just not cheap

I purchased mine new from ebay for 600.00. Other than having to unlock the theftlock, and connecting the VSS wire, it was plug and play. THe VSS wire needs to be connected if you wand info in the HUD, and turn by turn directions from nav. Other than those 2 things, it will all work when connected in 2005 and up. 2004 GPs have an issue with the nav distance being off .2 miles.

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-Any government big enough to give you everything, is powerful enough to take it all away.
08 GXP, Magnaflow Cat back, CAI, K40 Calibre w/ laser diff, Hamburger TBS, SLP 1.85 rockers, Heat soak kit, Inferno CF hood
13.779 @ 100.26