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2015 / 2016 / 2017 Chevrolet Silverado & GMC Sierra 2500/3500 HD

General topics about GM's next-generation, 2015+ full-size heavy-duty trucks.
2015 / 2016 Chevrolet Silverado & GMC Sierra 2500/3500 HD

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2015 / 2016 / 2017 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)

  • 172 topics
  • 1,587 replies
Diesel or gas let's hea... - last post by Silverado4x4

2015 / 2016 / 2017 Silverado HD & Sierra HD Accessories & Modifications

Modifying and accessorizing your 2015-2017 Silverado HD or Sierra HD

  • 394 topics
  • 3,060 replies
Xenon Depot HID Install... - last post by revrnd

Duramax 6.6L Turbo-Diesel (LML), Vortec 6.0L (L96/LC8), Drivetrain, & Exhuast

Technical discussion for the 2015-2016 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.

  • 61 topics
  • 847 replies
Mpg for new gas 2500 - last post by Cowpie

2017 Duramax 6.6L V8 Turbo-Diesel (L5P) Technical Discussion

Questions, modifications, tuning, and normal operation of the 2017+ L5P Duramax Diesel Engine found in the Chevrolet Silverado HD and GMC Sierra HD

  • 7 topics
  • 158 replies
Official information on the... - last post by Peterd


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