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Technical & Advanced


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Vehicle Appearance, Care, & Maintenance

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

  • 3,956 topics
  • 30,256 replies
Cleaning, waxing and using... - last post by Texas Husker

Ask the GM Technician

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

  • 12,715 topics
  • 51,535 replies
2003 2500HD 6.0 4 Wheel Dri... - last post by govtech4

Performance Engine Tuning

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

  • 1,187 topics
  • 10,473 replies
K&N cleaning mysterious... - last post by 02suburbanZ71

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.

  • 4,659 topics
  • 34,145 replies
99 Silverado Lift 2WD - sus... - last post by Bankz27

Wheels, Tires, & TPMS

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

  • 2,720 topics
  • 20,529 replies
TPMS  sensor question - last post by Zebrafive

Audio, Electronics, OnStar, & SiriusXM

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

  • 5,238 topics
  • 27,429 replies
Bluetooth Options For 2008... - last post by CrunchyBlack386

How-To

Installations, Maintenance, and Repairs.

  • 903 topics
  • 4,524 replies
Replacing 2014 sierra/silve... - last post by Tea3gue