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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.

  • 3,866 topics
  • 29,649 replies
Adam's Polishes Daily Special - last post by Nick@Adams

Ask the GM Technician

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

  • 12,472 topics
  • 50,138 replies
Seat Noise - last post by jhm

Performance Engine Tuning

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

  • 1,168 topics
  • 10,312 replies
1993 gmc chip - last post by 94sierra16

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.

  • 4,567 topics
  • 33,693 replies
looking for a cheaper scann... - last post by Chris

Wheels, Tires, & TPMS

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

  • 2,631 topics
  • 19,987 replies
20" wheel and tire comb... - last post by jonny5172

Audio, Electronics, OnStar, & SiriusXM

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

  • 5,182 topics
  • 27,230 replies
No display, Backup cam? - last post by EastCoast HD


Installations, Maintenance, and Repairs.

  • 884 topics
  • 4,438 replies
GMT900 - Footwell Lighting - last post by 2013sierrasle

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