I want to keep my factory deck, but I have a MP3 player & Sat radio I want to hook up. I don't have Bose or Onstar. I have the CD player unit in my car now. I've read a few things that say yes, and another that says only if you have the CD/AUX button. I have the CD/PLAY button. I'm lazy; I don't want to open the dash up and check the rear of the radio to see if it has the input. But I'll do it if I have to. Mainly I don't want to buy the GM9-AUX and then find out I can't use it.

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2004 Impala SS - ZZP PCM, 3.4" Pulley, K&N CAI, TOG Headers, SLP Cat-Back, 180* thermo, Autolite 605s, PRJ Performance wires, Alternator rewire, GMPP Handling kit
2000 Grand Prix GT, Commuter Car - K&N CAI, GMPP Handling kit, ZZP downpipe w/U-bend delete, ZZP Plog, Alternator rewire

from the PAC website Requirements: The sedan, truck or SUV must have a separate working slave unit which uses the GM 9 pin connector (1995-2002 vehicles).
Slave unit examples are: external CD changer, cassette player and/or single CD player.

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Steve
'97 GTP VS cam, ZZP PCM, and not much else yet

http://www.pac-audio.com/vag.html a few answers on here

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Steve
'97 GTP VS cam, ZZP PCM, and not much else yet

your head unit likely does have the 9 pin plug, but simply because the case and circuit board is the same there, but the tape head units are the ones that have the logic for controlling the cd changer port...

Hmm. The PIE website says it'll work, but what you say it won't? Guess I need to try to find a local shop that may carry it and see if they will let me try it out first.

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2004 Impala SS - ZZP PCM, 3.4" Pulley, K&N CAI, TOG Headers, SLP Cat-Back, 180* thermo, Autolite 605s, PRJ Performance wires, Alternator rewire, GMPP Handling kit
2000 Grand Prix GT, Commuter Car - K&N CAI, GMPP Handling kit, ZZP downpipe w/U-bend delete, ZZP Plog, Alternator rewire

It should work if you have the 9-pin adapter. I hooked up a slave CD player (single disc), and a tape deck (slave) to my Delco unit when I had my MC. Before that, it didn't have anything attached to it on the 9 pin.

Head to a local junk yard, and see if you can pull a slave unit from a buick or a Chevy truck/van. Test the connection using that. Around here we have Pick-n-Pull and they sell the units dirt cheap. (less than 10$). Thats what I used to test mine.

As long as your unit has a button labeled, CD/AUX, TAPE/AUX you should be OK, as the unit should be able to recognize the AUX unit.

UPDATE: You need to goto the junk yard and get a tape deck/single cd. You can find them on a bunch of GMC/Chevy Trucks... The unit AAI-GM9 works like a cassette/cd adapter. I.E.: The AUX unit cuts into the stream heading back to the radio from whatever source you have (Cassette/Single CD/Changer), allowing you to listen to your AUX source. The AAI-GM9 comes with a 3-position switch to allow you to cut back to the slave unit.

New Update: You can use the AUX-BOX by PAC to do what you want to do.

See the Pontiac Application Guide here: Vehicles

See the Install Instructions: Instructions

I just need to find a dealer who has a good return policy on the chance it doesn't work. AUX-BOX requires so many pieces it starts to get close to the cost of just getting a new head unit. That's what I want to avoid. I had a JVC H/U in an Escape I had that I liked, and I still have the cable to give me a 3.5mm jack on it. For about $225, I can get an HD radio head unit and steering wheel remote controls. The AUX-BOX directions were confusing enough that it would hit over $100 just to get it working, and then I have to deal it shoving the AUX-BOX somewhere. I've considering looking for another radio on eBay with CD/AUX and getting the GM9-AUX connector with it.

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2004 Impala SS - ZZP PCM, 3.4" Pulley, K&N CAI, TOG Headers, SLP Cat-Back, 180* thermo, Autolite 605s, PRJ Performance wires, Alternator rewire, GMPP Handling kit
2000 Grand Prix GT, Commuter Car - K&N CAI, GMPP Handling kit, ZZP downpipe w/U-bend delete, ZZP Plog, Alternator rewire

I sent a note to PAC. There is NO option available for an AUX-IN if you radio has CD/PLAY buttons. So now I either have to find a factory radio with CD/AUX, or just spend the money on an aftermarket radio and steering wheel controls.

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2004 Impala SS - ZZP PCM, 3.4" Pulley, K&N CAI, TOG Headers, SLP Cat-Back, 180* thermo, Autolite 605s, PRJ Performance wires, Alternator rewire, GMPP Handling kit
2000 Grand Prix GT, Commuter Car - K&N CAI, GMPP Handling kit, ZZP downpipe w/U-bend delete, ZZP Plog, Alternator rewire