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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.

  • 4,454 topics
  • 34,073 replies
Rail Dust on black plastic... - last post by cbrsilv15

Ask the GM Technician

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

  • 13,992 topics
  • 58,118 replies
2012 Suburban - Night Time... - last post by 2012suburban

Performance Engine Tuning

A forum dedicated to intensive and experienced engine and computer modification topics.
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  • 1,319 topics
  • 11,246 replies
I want 20mpg from my 02 150... - last post by diyer2

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.

  • 5,063 topics
  • 35,401 replies
Popping noise after levelin... - last post by Loco-diablo

Wheels, Tires, & TPMS

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

  • 3,321 topics
  • 23,945 replies
M/T Decision - last post by Silver 5.3

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.

  • 5,645 topics
  • 28,872 replies
Android Auto Options for 2015 - last post by UofAZCats


Installations, Maintenance, and Repairs.

  • 481 topics
  • 3,266 replies
How-To: Heated Steering Whe... - last post by jdemm