Technical & Advanced

Forums

1. Vehicle Appearance, Care, & Maintenance

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

   19.7k

   posts

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   • Some Assembly is Required
   • By Grumpy Bear, 17 hours ago
2. Ask the GM Technician

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

   29.7k

   posts

   • 
   • 2001 GMC Sierra 1500 5.3L Secondary Air Monitor
   • By Jsdirt, June 12
3. Performance Engine Tuning

   A forum dedicated to intensive and experienced engine and computer modification topics.

   4k

   posts

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   • O2 sensors
   • By anson carr, April 29
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.

   12.2k

   posts

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   • 4L80E hard shifting
   • By diyer2, June 1
5. Wheels, Tires, & TPMS

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

   16.2k

   posts

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   • Autel TPMS Scanners
   • By revrnd, May 17
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.

   12.3k

   posts

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   • Truck unlocking by itself, help!
   • By Antrax0g, May 27
7. How-To

   Installations, Maintenance, and Repairs.

   2k

   posts

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   • No 9v Power to Trailer - Help!
   • By asilverblazer, February 3