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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.

  • 4,473 topics
  • 34,276 replies
Daily Deals for Detailing - last post by bndawgs

Ask the GM Technician

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

  • 14,040 topics
  • 58,384 replies
What is the correct Delco D... - last post by grandpalarry777

Performance Engine Tuning

A forum dedicated to intensive and experienced engine and computer modification topics.
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  • 1,319 topics
  • 11,259 replies
Has anyone tuned a 2017? BBP? - last post by NorCalSLT

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.

  • 5,075 topics
  • 35,457 replies
magnetic ride delete - last post by MB2008LTZ

Wheels, Tires, & TPMS

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

  • 3,354 topics
  • 24,134 replies
305/55/20 Duratraks on stoc... - last post by cflrules

Audio, Electronics, OnStar, MyLink, Intellilink & SiriusXM

Infotainment, Mylink, Intellilink, SiriusXM, Bluetooth, Navigation Systems, OnStar, RemoteLink, smartphone connectivity, & aftermarket audio. Also includes Android Auto and Apple CarPlay.

  • 5,669 topics
  • 28,949 replies
factory navigation question - last post by johnnyg123


Installations, Maintenance, and Repairs.

  • 489 topics
  • 3,287 replies
How-To: Rotate The Tires on... - last post by Eddie 70