so, with the GMOS-04 alone, were you able to retain the Monsoon amp and steering wheel controls?
Amp, yes... But any adapter I've seen on the market needs a separate thing to retain steering wheel controls. They all word it like it will retain by itself but they all need a separate adapter
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2004 Grand Prix GTP Comp G: Intake, F+R plogs + downpipe, 1.7 YT Rollers, Overkill, F-body front brakes, drilled/slotted r1 concept rotors.
Sport Edition Kv5 18x8