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Thread: Replacing 2000 Suburban factory radio

  1. #11
    FLAC
    Join Date
    Jul 2001
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    1,109
    Did you check your door locks when you had the radio unplugged?

    I was thinking 03-up on the expensive harness. You should be good with that 70-1858. Do your speaker grilles say Bose on them?

  2. #12
    Newbie
    Join Date
    Jul 2006
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    Nope. No Bose anywhere. Thanks for the advice

  3. #13
    Newbie
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    Jul 2006
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    Radio Intsall Update

    Gentlemen (and ladies),

    Thought I'd wrap this up for anyone who runs into the same situation.

    Synopsis
    2000 - 2003 GM was in transition with the radio/On-Star/operator notification systems. During that time you could have any of the following combos depending on the model/year (I believe they all had On-Star):

    No Bose/No RDS/No Class 2
    No Bose/RDS/No Class 2
    No Bose/Class 2

    Bose/No RDS/No Class 2
    Bose/RDS/No Class 2
    Bose/No RDS/Class 2

    Their may be other combos as well. The Class 2 interface really complicated things by including driver notification (chimes) in the radio system as well.

    Back to my setup (On-Star/No Bose/No RDS/No Class 2) 2000 Suburban.
    If you have a vehicle with this setup and you want to keep On-Star working you must get a PAC OS-1 interface device (or equivalent) ~$100. Scosche and Precision VAR this device as well. I went this route and it works perfectly.

    If you don't care about On-Star and don't want to drop the coin on the PAC OS-1 you'll have to play with the wiring a bit. The radio has two connectors. The larger (21 Pin) is your standard radio connector. The 18 Pin is the interface to On-Star and any other sub-systems. You will need to tie one or more wires on the 18 Pin to a suitable trigger to activate the factory amp. See the wiring diagram attached above for more details.

    If you have a Class 2 radio you will need the PAC OS-2 (or equivalent) along with the chime module.

  4. #14
    FLAC
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    Jul 2001
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    Hey, at least you learned a thing or two about your truck Most people just want to be spoonfed as soon as they hit a snag but those people usually don't have hobbies like this.

  5. #15
    Newbie
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    Jul 2006
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    The saga continues

    I installed PAC OS-1 and On-Star and the radio now work. That's the good news. The bad news is that only the front speakers will play. I know it's not the radio because I connected the front outputs to the rear speaker leads and nothing, but they work when connected to the front speakers.

    Any ideas?

  6. #16
    FLAC
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    Jul 2001
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    There's an amp somewhere that's not getting turned on.

  7. #17
    Newbie
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    Jul 2006
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    Looking at the wiring diagram there's just one amp for all the speakers and the fronts are working. I may end up bypassing the amp for the rears. What a PITA this has become just to replace the factory radio.

  8. #18
    Newbie
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    Jul 2006
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    Any ideas where the physical location of the amplifier in the suburban is?

  9. #19
    Self proclaimed spoon feeder TruckinMP3's Avatar
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    Quote Originally Posted by saraja
    Any ideas for the physical location of the amplifier?
    Under one of the seats in the second row.
    TruckinMP3
    D201GLY2, DC-DC power, 3.5 inch SATA

    Yes, you should search... and Yes, It has been covered before!

    Read the FAQ!

  10. #20
    FLAC
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    I bet it's in the center console.

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