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Technical & Advanced


Vehicle Appearance, Care, & Maintenance

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

  • 4,413 topics
  • 33,664 replies
Eraser wheel fail - last post by Heavy 5.7

Ask the GM Technician

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

  • 13,880 topics
  • 57,609 replies
2000 Sierra Intermittent AC - last post by Javabear

Performance Engine Tuning

A forum dedicated to intensive and experienced engine and computer modification topics.
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  • 1,309 topics
  • 11,195 replies
05 Sierra Denali w/ Magnaso... - last post by atlantaman

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.

  • 5,042 topics
  • 35,340 replies
Arnott Releases New Video H... - last post by ArnottInc

Wheels, Tires, & TPMS

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

  • 3,266 topics
  • 23,636 replies
Help make this easy.... - last post by Dexter10

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.

  • 5,618 topics
  • 28,758 replies
Bluetooth in FRENCH!! - last post by MikeNH


Installations, Maintenance, and Repairs.

  • 482 topics
  • 3,246 replies
How to remove brush on bed... - last post by sdeeter19555