Based on data from 49 vehicles, 3,420 fuel-ups and 1,187,922 miles of driving, the 2017 GMC Sierra 2500 HD gets a combined Avg MPG of 13.68 with a 0.12 MPG margin of error.

Any Engine Type 6.0L V8 FLEX (9) 6.6L V8 DIESEL (40) Any Body Style Sport Utility (1) Crew Cab Pickup (9) Any Submodel Base (2) SLE (6) SLT (9) Denali (32)

Below you can see a distribution of the fuel-ups with 70 outliers (2.01%) removed.

Following shows the average MPG of each of the 49 vehicles in the system.

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• Mighty Max

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Jun 2021 • 12 Fuel-ups

  Property of harleydude63

• 12.3 Avg MPG

• My Sierra 2500 HD

  2017 GMC Sierra 2500 HD 6.0L V8 FLEX Automatic 6 Speed
  Added Nov 2018 • 245 Fuel-ups

  Property of brianjkmorgan

• 12.7 Avg MPG

• My Sierra 2500 HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Aug 2017 • 303 Fuel-ups

  Property of Paul303

• 15.7 Avg MPG

• Sierra 2500 HD Denali

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Nov 2019 • 73 Fuel-ups

  Property of ellisjte

• 13.8 Avg MPG

• Sierra 2500 HD 2017

  2017 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Aug 2017 • 295 Fuel-ups

  Property of lsfreezn

• 13.1 Avg MPG

• Dalton Sierra 2500 HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Oct 2017 • 169 Fuel-ups

  Property of deewhite

• 13.5 Avg MPG

• 2500HD w/Camper

  2017 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Jul 2018 • 54 Fuel-ups

  Property of ChuckP62

• 11.5 Avg MPG

• GMC 2017 Sierra 2500 HD

  2017 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Jun 2018 • 287 Fuel-ups

  Property of Risser

• 13.1 Avg MPG

• Denali

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Mar 2017 • 168 Fuel-ups

  Property of jbdoughty01

• 14.3 Avg MPG

• 2017 SIERRA

  2017 GMC Sierra 2500 HD SLE 6.0L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Aug 2020 • 123 Fuel-ups

  Property of swood2940

• 12.3 Avg MPG

• 2017 Sierra 2500 HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Mar 2017 • 241 Fuel-ups

  Property of crjones

• 14.3 Avg MPG

• My Sierra 2500 HD

  2017 GMC Sierra 2500 HD 6.0L V8 FLEX Automatic 6 Speed
  Added Aug 2021 • 8 Fuel-ups

  Property of zap_25

• 9.9 Avg MPG

• 2017 Sierra 2500 HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Dec 2019 • 32 Fuel-ups

  Property of TheDon81

• 14.4 Avg MPG

• HD Heather

  2017 GMC Sierra 2500 HD SLE 6.0L V8 FLEX Automatic 6 Speed
  Added Aug 2017 • 72 Fuel-ups

  Property of CRTurboGuy

• 11.4 Avg MPG

• My Sierra 2500 HD Denali

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Apr 2021 • 21 Fuel-ups

  Property of Zane62

• 16.6 Avg MPG

• BMax HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Sport Utility
  Added Apr 2017 • 94 Fuel-ups

  Property of CowboyX5D

• 13.5 Avg MPG

• Denali Duramax

  2017 GMC Sierra 2500 HD Denali 6.0L V8 FLEX Automatic 6 Speed
  Added Jul 2021 • 5 Fuel-ups

  Property of Neely25

• 14.3 Avg MPG

• My Sierra 2500 HD

  2017 GMC Sierra 2500 HD SLE 6.0L V8 FLEX Automatic 6 Speed
  Added Nov 2017 • 77 Fuel-ups

  Property of Boor35

• 10.9 Avg MPG

• My Sierra 2500 HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Jan 2020 • 27 Fuel-ups

  Property of Garrisonlorenz

• 14.2 Avg MPG

• Ed's GMC 2500HD Deinali Club Cab

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Apr 2017 • 121 Fuel-ups

  Property of HntngTrout

• 12.5 Avg MPG

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