Re: '07 H3; Aftermarket radio installation
To keep Onstar and chimes, I used peripheral GMAH24B and GMAHCM. I tried an all-in-one solution (Neucleus NC-GM39B) but it caused a "pop" in the speakers. Perhipheral stuff works great.
I'm not sure about aftermarket amp (I kept the monsoon that mine came with). The way the adapters plug in, I think you would have to modify the vehicle wiring to change the amp. May be a bit much for a leased vehicle.
Good luck.
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2010 Red Rock Metallic H3. Just as cool as the first four Hummers I owned. Yeah, I have a problem.
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