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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.

  • 4,001 topics
  • 30,510 replies
Denali Taillamps - last post by 2013sierrasle

Ask the GM Technician

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

  • 12,834 topics
  • 52,281 replies
01 silverado z71 belt squeal - last post by sahls01gmc

Performance Engine Tuning

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

  • 1,200 topics
  • 10,536 replies
Best tuner to turn off AFM? - last post by BigBlueLB756

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.

  • 4,698 topics
  • 34,354 replies
Arnott Releases 2015 Catalo... - last post by ArnottInc

Wheels, Tires, & TPMS

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

  • 2,780 topics
  • 20,955 replies
Looking for tire advice. - last post by kstruckcountry

Audio, Electronics, OnStar, & SiriusXM

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

  • 5,284 topics
  • 27,632 replies
is this all i need? - last post by uchi

How-To

Installations, Maintenance, and Repairs.

  • 916 topics
  • 4,653 replies
How to wire a LED tailgate... - last post by GasHog369