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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.

  • 4,354 topics
  • 33,131 replies
Adams Trim Coating - last post by MikeB52r

Ask the GM Technician

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

  • 13,791 topics
  • 57,113 replies
Goes into limp mode when au... - last post by Duelin

Performance Engine Tuning

A forum dedicated to intensive and experienced engine and computer modification topics.
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  • 1,301 topics
  • 11,164 replies
edge or bullydog 5.3L - last post by Daryl Z71

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.

  • 5,014 topics
  • 35,258 replies
Front diff fluid color - last post by Dexter10

Wheels, Tires, & TPMS

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

  • 3,209 topics
  • 23,353 replies
Better tire choice for stock - last post by Immaculate Reflections

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.

  • 5,581 topics
  • 28,596 replies
Nav Map Updates? & Soft... - last post by rangerhgm


Installations, Maintenance, and Repairs.

  • 474 topics
  • 3,234 replies
How-To: Heated Steering Whe... - last post by shay