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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.

  • 3,990 topics
  • 30,433 replies
How often do you wax your t... - last post by 02suburbanZ71

Ask the GM Technician

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

  • 12,795 topics
  • 52,089 replies
2014 SILVERADO Fuel/oil leaks - last post by govtech4

Performance Engine Tuning

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

  • 1,194 topics
  • 10,508 replies
AutoCal in route!!! - last post by kstruckcountry

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.

  • 4,682 topics
  • 34,243 replies
Transmission fluid question - last post by govtech4

Wheels, Tires, & TPMS

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

  • 2,760 topics
  • 20,800 replies
GM not offering many 22 inc... - last post by hurricanoday

Audio, Electronics, OnStar, & SiriusXM

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

  • 5,266 topics
  • 27,538 replies
Open Infotainment Project - last post by OhmMega

How-To

Installations, Maintenance, and Repairs.

  • 912 topics
  • 4,583 replies
Tow mirror wiring - last post by Zebrafive