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  1. #1

    Exclamation Disconnecting OnStar in Onstar-equipped 99-06 Silverados/Sierras

    To kick Big Brother out of your truck, permanently, fuse removal is not enough, as that only disables audio functionality for OnStar. In Onstar-equipped 99-06 NBS trucks, the OnStar unit should be located behind the passenger side air bag and be accessible via the glove box. This simple, 5-step process will let you drive wherever you like, however you like -- without OnStar tracking it. You can undo this any time you like to re-enable OnStar; simply reverse the process.

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    Older (analog) OnStar units may not look like this or have the same number of connections, but the principle should be the same.

    Also, if you plan to re-enable OnStar or want to reserve the ability to do so, then please pay attention which multi-pin ports on the OnStar unit your connections are using PRIOR to disconnecting them. You can see from the 4th picture, above, that there are more multi-pin ports than I have connectors. I will never re-attach mine so I didn't label anything. If you think you might want to reconnect yours, inspection prior to disconnection ... followed by labeling ... would be prudent.
    Last edited by SurrealOne; 01-25-2012 at 12:15 AM.

  2. #2

    Red Z71 Max's Avatar
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    May 2011
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    Nice Post!!!! @SurrealOne!!!!!

    (Scott) Myrtle Beach, SC
    January 2012 ROTM WINNER
    2011 GMC Sierra Z71 MAX 6.2 L w/ Trailering Package
    Rough Country, XD Rockstars, Nitto Trail Grapplers, N Fab, Lund Genesis, Putco, Gator Grip,
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  3. #3
    Sr. Mechanic 747's Avatar
    Join Date
    Nov 2011
    Jackson, TN


    Nice! Im going to take a look at the onstar unit on my NBS and see if I can do the same!
    2011 Silverado, ext cab, LT, Z71, 4X4, leather interior, color matched mirror caps & bowtie.

  4. #4


    LOL. Great post and soooo technical.
    2010 Chevy Silverado Z71 ext cab.4x4
    72 Monte Carlo 350-415 hp- sold (June 2011) to pay medical bills
    79 Impala 350 4bbl 375 hp- sold (June 2011)to pay medical bills

    "If He asks you to go a mile go two"

  5. #5


    Also worth mentioning is that the blue connector in the photos is for the GPS antenna (which makes it potentially re-usable for aftermarket GPS nav head-units) while the large coaxial-like connector is the cellular antenna (which is what's wound around your radio antenna ).
    Last edited by SurrealOne; 01-25-2012 at 12:24 AM.

  6. #6


    well i dont have onstar but its nice to know of all that empty space for anyhitng else i might plan to put there!
    2000 Chevrolet Silverado

    4.3L V6, 4L60E, 2WD, Single Cab
    Airaid CAI
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    Head Unit: Alpine
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    305/70R16 NITTO Terra Grapplers
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  7. #7


    Quote Originally Posted by reggiecab2000 View Post
    well i dont have onstar but its nice to know of all that empty space for anyhitng else i might plan to put there!
    Heh. The OnStar unit in my 2004 was massive. It was vertically oriented and I'd estimate it was 5"x4"x1". I yanked the XM radio unit (which is also located in this same area), as well, since I have a lifetime Sirius account ... and the XM unit is also ridiculously large for what it does.

  8. #8


    It appears that the onstar unit in 2007+ is below the radio behind the dash panel. I tried disconnecting my Onstar because for 1. Im sick of them continually calling my cell phone after repeatedly telling them to stop and that I do not want thier service. and 2. they are continually interupting my radio in my truck while im driving to tell me my subscription is ending. I KNOW THIS ALREADY!!

    So after disconecting all the plugs into the unit my Abs light came on, My information center displayed "Service 4 wheel drive" and my traction control was disabled automatically and could not be re-enabled. So I reconnected the unit and Im going to try one plug at a time but to not remove the whole unit is very disturbing to me.
    Looks like they force us to keep this unit in the vehicle because of its link to monitor the operation of the vehicle itself. I think I will try and just disconnect the antenna at least to keep the information from transmitting in/out but im not sure if this is enough. I posted a couple of pics of the unit itself. It appears a little different than what Surreal has posted but it appears to have the same labeled plugs like J2 J3 and so forth. Oh yeah and another thing. Check out where the unit was assembled!..... IN CHINA!!!!!
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    Last edited by the phantom; 07-27-2012 at 04:13 PM.

    2011 Silverado CrewCab 5.3L*Ram Air Look Cowl Induction Reflexxion Hood*6" Pro Comp Lift*Flowmaster Dual exhaust*Perfect Launch Rear Diff. Cover*Led Smoke Taillights*L.E.D.Smoke 3rd Brakelight*60" L.E.D. Tailgate Bar*Rearview Mirror Reverse Camera and Sensors*Smoke Headlight Covers*Front Bumper Grill Insert*Deezee Black Alum. Diamond Rail covers*20" Ultra Motorsports Rims wrapped with 35.5"B.F. Goodrich Tires*Inchannel Raingaurds*CAI*Bullydog GT Tuner*Alpine Amp*Boss 6x9's*Boston Acoustic Subs*Terrantula Tweeters*Custom Sub box*Red Led Interior Accents*5% Ultimacool duo tint rear window and doors, 20% front doors*Custom Vinyl Graphics*Demolded*Debadged*Painted drums and calipers*
    Future Mods Include: Custom Interior Hydrographics, Electronic Rollup Toneau Cover, 4.56 Gears, Painted rear bumper

  9. #9


    @ the phantom I am glad you posted this. It was one of the things I wanted to try when it gets cooler out.

    2011 GMC Sierra SLE - 5.3 - 4X4 - Z71 - King Shock Level Kit - Body Color GMC grill emblem - 2 Tone Engine Cover, Rad Cover and Battery Box - Volant CAI - Tru Cool 40K tranny cooler - Sylvania ZXE bulbs Hi/Low -TriFold Hard Tonneau Cover- CoverCraft Seat Covers - Diablo inTune - GoRecon LED under rail lights - GoRecon LED White Lightning Tailgate Light Bar - Windows tinted to 45%- Kenwood DNX6990 - JL Audio C5-650 &650X- JL Audio Amp- Interco Truxus M/T 33x12.50x18

  10. #10


    im looking at this as well.


    2011 GMC Sierra SLE 5.3 Z71 4X4 Stealth Gray Metallic / 2004 Chevy Impala LS 3.8 Cappuccino

    Tow mirrors - Diablew Tuned - Flowmaster Regular 40 - Ready Lift 2.5' lift - BFG LT A/T K/Os - Carr Light Wing - TruckLite LED lights - Optima Red Top - 50% Front Window Tint - Line-X bedliner - Airaid MIT - Tekonsha P2 - ARS Billet Grill - Fia custom fit seat covers

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