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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.

  • 3,969 topics
  • 30,336 replies
Adam's Fall Pre Sale wi... - last post by ToesonTheNose

Ask the GM Technician

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

  • 12,757 topics
  • 51,830 replies
Auto Ride function question... - last post by 06SierraZ71

Performance Engine Tuning

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

  • 1,193 topics
  • 10,502 replies
Alternator - last post by Chris

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.

  • 4,665 topics
  • 34,180 replies
6 speed abuse - last post by MikeNH

Wheels, Tires, & TPMS

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

  • 2,734 topics
  • 20,605 replies
Change of season, have you... - last post by 06SierraZ71

Audio, Electronics, OnStar, & SiriusXM

SiriusXM, Bluetooth, Navigation Systems, OnStar, RemoteLink, smartphone connectivity, & aftermarket audio.

  • 5,248 topics
  • 27,461 replies
Why can't OEM do this? - last post by TJMaine


Installations, Maintenance, and Repairs.

  • 905 topics
  • 4,543 replies
Heated Steering Wheel Insta... - last post by woody7978