Hey guys. Been a while! Finally decided to replace my stock uh and havin some problems. So the stock stereo would sometimes work until it cut out and said "Bose" instead of "monsoon" what would cause that? And then I bought a new hu assuming it was the old u it and when I hooked up all the wires to the stereo with the gmrc-04 the unit turned on but wasn't putting out sound to the speakers at all. Was hoping it would be more plug and go. Let me know of any suggestions. Thanks!
Jake

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*** Certified Adrenaline Junkie ***

2002 white SSEI Bonneville.
INTENSE FWI

Many beginner level performance mods to come
3 10" Championship series pioneer subs in the trunk.

bump hoping to get an answer.

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*** Certified Adrenaline Junkie ***

2002 white SSEI Bonneville.
INTENSE FWI

Many beginner level performance mods to come
3 10" Championship series pioneer subs in the trunk.

There is an input on the back of the head unit and depending on what it sees, it will be "Bose", "Monsoon" or neither. It sounds almost like you have a wiring issue. I'm assuming that you are using that module with an aftermarket radio? I'm not familiar with the module, but some are not compatible with systems that use an external amplifier. Only the SSEi or GXP had an external amp, SE and SLE use the amp built into the head unit.

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Bose Luxury Sound System w/Touch Screen Navigation, Addition of Factory XM, 2005 MY Antenna, OnStar Upgrade (3G),
RainSense Wipers, Backup Camera, '00 Style Door Panel Courtesy Lights, Heated Washer Solvent, 2X Remote Trunk Release,
Turn Signal Mirrors, Center Console Courtesy Lamp, Rear Outboard Heated Seats, PVD Chrome 18" Factory Rims, Upgraded
Carbon Fibre Appearance Interior Trim, Highly Modified Main Body Harness, Instrument Panel, Door, Door Panel & Headliner
Wiring Harnesses, Custom Fuse Box & Tire and Loading Information Decals, Additional Acoustic Insulation

mine has had problems with this dumb external amp since the very beggining. Im guessing you are right on this. i think i will bypass the amp and run my own and be rid of this ridiculous system once and for all

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*** Certified Adrenaline Junkie ***

2002 white SSEI Bonneville.
INTENSE FWI

Many beginner level performance mods to come
3 10" Championship series pioneer subs in the trunk.

You can try having a read through this thread... There might be some helpful information there for you as it sounds like this member had the same/similar problem to yours.

audio-and-aftermarket-electronics/topic11842.html

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Bose Luxury Sound System w/Touch Screen Navigation, Addition of Factory XM, 2005 MY Antenna, OnStar Upgrade (3G),
RainSense Wipers, Backup Camera, '00 Style Door Panel Courtesy Lights, Heated Washer Solvent, 2X Remote Trunk Release,
Turn Signal Mirrors, Center Console Courtesy Lamp, Rear Outboard Heated Seats, PVD Chrome 18" Factory Rims, Upgraded
Carbon Fibre Appearance Interior Trim, Highly Modified Main Body Harness, Instrument Panel, Door, Door Panel & Headliner
Wiring Harnesses, Custom Fuse Box & Tire and Loading Information Decals, Additional Acoustic Insulation

You need a GMOS-09 adaptor. The GMRC-04 is not for cars with amplifiers and is not listed for Bonnevilles.

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bobgto65

2004 Bonneville GXP 62,000 miles purchased 04/13
2009 G8 GXP PBM, M6 9580 miles, no mods, sold 08/15
2009 G8 GT SBM 36,000 miles, modded 430 whp
2002 Bonneville SSEi 203,200 miles (sold 3/2014)