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  1. #1
    Join Date
    Jun 2002
    Location
    Chatham, Ont. Canada
    Posts
    1,944

    Default 2004 Chevy Radio Unlock

    We just got a used 2004 Chevy Venture. One of the terrible "features" is every time the battery is disconnected, the radio gets locked out and you need a code. Right now the radio isn't locked, so I'd like to know if there is anyway to disable this antitheft bs, or to ascertain the code before I need it.

    Anybody have any ideas? A search of the internet just leads around, and around and around.
    Trevor
    1971 Riviera
    I must obey the inscrutable exhortations of my soul

  2. #2
    Join Date
    Feb 2002
    Location
    Oakland Gardens, N.Y.
    Posts
    21,410

    Default Re: 2004 Chevy Radio Unlock

    Quote Originally Posted by crazyjackcsa View Post
    We just got a used 2004 Chevy Venture. One of the terrible "features" is every time the battery is disconnected, the radio gets locked out and you need a code. Right now the radio isn't locked, so I'd like to know if there is anyway to disable this antitheft bs, or to ascertain the code before I need it.

    Anybody have any ideas? A search of the internet just leads around, and around and around.
    Yes,
    You can disable the "Theft Lock". Procedure is in the owners manual, but you still need the code. Do you have the owners manual? Maybe they wrote the code in there. That is what I did with my 98 Riviera. Only other way is to go to the dealer with the VIN.
    Larry
    1998 "Fully Optioned" SC3800 Riviera
    70 GS 455 Stage1, TSP 470, 602 HP@ 5900, 589 TQ @ 4900
    TA Hyd Roller Cam, 230*/238*, 112, .544"/.577" lift, 4-7 swap
    MSD Digital 6+, Ignitionman Distributor w/MSD trigger
    1967 BT Switchpitch ST-400, Gear Vendors OD
    with TSP 3200/1800 converter
    AED 1000 HO Carb, 800 CFM 7042240 Quadrajet
    8.5 10 bolt, 3.73's
    11.67 @ 115.49 MPH
    Larrymta@verizon.net, GSCA #291
    BPG # 1063
    N.E. GS/GN Club Assistant Director

  3. #3
    Join Date
    Mar 2002
    Location
    Windsor Ontario
    Posts
    7,290

    Default Re: 2004 Chevy Radio Unlock

    the original owner must have entered a radio lock code. if u can get it cleared, do not enter a new code. worst case u may have to attend the dealer.
    Gerry
    1972 GS 350 ht #s
    2008 Astra XR 3 door
    2011 Chevy Cruze

  4. #4
    Join Date
    Feb 2002
    Location
    Northern Virginia
    Posts
    5,179

    Default Re: 2004 Chevy Radio Unlock

    What they said + Get a power plug for the 12v outlet and hook it up to a 12v source when you disconnect the battery. I use my portable car starter. That way you do not lose any memory or lock the radio.

    - Bill
    Bill Bell

    GSCA 4487
    BPG 1044
    BCA 35980

    67 Special Wagon
    68 LeSabre 400 vert
    70 GS 455
    71 GS 350 vert -sold

  5. #5
    Join Date
    Feb 2010
    Location
    Framingham, Ma
    Posts
    2,812

    Default Re: 2004 Chevy Radio Unlock

    Quick tip. On many of the theftlock radios the code is actually the last 4 digits of the vin.
    "To achieve great things, two things are needed: a plan, and not quite enough time."
    --Leonard Bernstein

  6. #6
    Join Date
    Jun 2002
    Location
    Chatham, Ont. Canada
    Posts
    1,944

    Default Re: 2004 Chevy Radio Unlock

    Disarming instructions aren't in the user manual, nor is the code. The procedure for a 1998 doesn't copy over for a 2004. Thanks for the input guys. Looks like I'll have to keep searching.
    Trevor
    1971 Riviera
    I must obey the inscrutable exhortations of my soul

  7. #7
    Join Date
    Mar 2002
    Location
    Sunny Seminole FL
    Posts
    14,835

    Default Re: 2004 Chevy Radio Unlock

    I have an 2004 Silverado....was told by many if the battery dies completely or you disconnect it ...dealer has to reset the radio......cost is $50.....so lesson learned, I use my jumper box to power the truck when I changed the battery.
    George Nenadovich
    Buick Performance Club Founder
    www.BuickPerformanceClub.com

  8. #8
    Join Date
    Jun 2010
    Location
    Birmingham Alabama
    Posts
    9,517

    Default Re: 2004 Chevy Radio Unlock

    We have a 2003 S-10 at work. We accidentally found An anti-theft feature for it. If, the key is left in the ignition for an inordinate amount of time (while the ignition is off), the fuel pump will shut down..........., That one took a while to figure out.......
    Last edited by bhambulldog; 03-19-2012 at 09:19 PM. Reason: added "off"
    "Bulldog" James A. Miller

 

 

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