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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.

  • 3,914 topics
  • 29,969 replies
Hard water and pollen stains! - last post by Texas Husker

Ask the GM Technician

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

  • 12,601 topics
  • 50,966 replies
Part number for crankshaft... - last post by gogringoslovenia

Performance Engine Tuning

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

  • 1,186 topics
  • 10,453 replies
Black Bear tune vs. Hypertech - last post by txab

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.

  • 4,619 topics
  • 33,962 replies
Teflon tape on transfer cas... - last post by govtech4

Wheels, Tires, & TPMS

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

  • 2,687 topics
  • 20,317 replies
Alignment - last post by 8.1HD/ALLISON

Audio, Electronics, OnStar, & SiriusXM

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

  • 5,221 topics
  • 27,387 replies
OGM-1 Navigation - Suspicio... - last post by 99k1500


Installations, Maintenance, and Repairs.

  • 897 topics
  • 4,489 replies
$5 door lock fix - last post by compulynx