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Technical & Advanced

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  1. Vehicle Appearance, Care, & Maintenance

    Help for the do-it-yourself vehicle owner. Suggestions on how to make your truck look better & last longer.

    39,261
    posts
  2. Ask the GM Technician

    Have a hard question?
    Only Questions That You Would Go To The Dealer For, Please!

    73,958
    posts
  3. Performance Engine Tuning

    A forum dedicated to intensive and experienced engine and computer modification topics.
    Brought to you by:
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    12,657
    posts
  4. Transmission, Suspension, Transfer Case, & Axles

    For all transmission and drive-line related topics. Included but not limited to 2WD, 4WD, AWD, transfer cases, & lift/lowering kits.

    40,686
    posts
  5. Wheels, Tires, & TPMS

    Anything related to rims, tires, tire pressure monitor sensors, fixing a flat, and general tire maintenance here.

    28,024
    posts
  6. Audio, Electronics, OnStar, MyLink, Intellilink & SiriusXM

    Infotainment, Mylink, Intellilink, SiriusXM, Bluetooth, Navigation Systems, OnStar, RemoteLink, smartphone connectivity, & aftermarket audio. Also includes Android Auto and Apple CarPlay.

    34,901
    posts
  7. How-To

    Installations, Maintenance, and Repairs.

    3,840
    posts
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