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2015 Chevrolet Silverado & GMC Sierra 2500/3500 HD

General topics about GM's next-generation, 2015+ full-size heavy-duty trucks.
2015 Chevrolet Silverado HD & GMC Sierra HD



  Posted by RyanbabZ71


2015 Silverado HD & Sierra HD Issues, Troubleshooting, & Recalls/Service Bulletins

A central location to report any issues or asking for help troubleshooting any problems with your 2015+ Chevrolet Silverado HD or GMC Sierra HD. Also recall announcements and Technical Service Bulletins (TSB)

  • 6 topics
  • 45 replies
2015 Sierra HD  rusting / p... - last post by 14LTZZ71

2015 Silverado HD & Sierra HD Accessories & Modifications

Modifying and accessorizing your 2015 Silverado HD or Sierra HD

  • 10 topics
  • 33 replies
Xenon's installed in he... - last post by avalonandl

Duramax 6.6L Turbo-Diesel, Vortec 6.0L, Drivetrain, & Exhuast

Technical discussion for the Duramax 6.6L Turbo-Diesel V-8 (LML) and Vortec 6.0L V-8 (L96 / LC8) in 2015+ Silverado HD and Sierra HD applications. Also includes, drivetrain, transmission, axles, differentials, and exhaust systems.

  • 4 topics
  • 47 replies
Mpg for new gas 2500 - last post by All Terrain Trav

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