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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.

  • 4,369 topics
  • 33,256 replies
Oil change today - last post by Cowpie

Ask the GM Technician

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

  • 13,835 topics
  • 57,348 replies
Service 4wd light - last post by Knotsure

Performance Engine Tuning

A forum dedicated to intensive and experienced engine and computer modification topics.
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  • 1,306 topics
  • 11,186 replies
catalyst convertor chices:... - last post by barry G

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.

  • 5,031 topics
  • 35,290 replies
2015 silverado 1500 any goo... - last post by Szyikowski

Wheels, Tires, & TPMS

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

  • 3,231 topics
  • 23,477 replies
anyone running 20x9 -12 off... - last post by ltinspeedy

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.

  • 5,595 topics
  • 28,655 replies
Whats everyone paying for xm? - last post by sk


Installations, Maintenance, and Repairs.

  • 478 topics
  • 3,239 replies
How-To: A10 Inside RearView... - last post by Jesus953555