Based on data from 57 vehicles, 5,346 fuel-ups and 1,782,009 miles of driving, the 2017 GMC Sierra 2500 HD gets a combined Avg MPG of 13.37 with a 0.09 MPG margin of error.

Any Engine Type 6.0L V8 FLEX (11) 6.6L V8 DIESEL (46) Any Body Style Sport Utility (1) Crew Cab Pickup (10) Any Submodel Base (3) SLE (5) SLT (13) Denali (36)

Below you can see a distribution of the fuel-ups with 92 outliers (1.69%) removed.

Following shows the average MPG of each of the 57 vehicles in the system.

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• Sierra Denali 2017

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Jun 2019 • 107 Fuel-ups

  Property of jp0590

• 14.1 Avg MPG

• Denali HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Apr 2024 • 36 Fuel-ups

  Property of eddieandlinzi

• 15.0 Avg MPG

• My Sierra 2500 HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Aug 2017 • 506 Fuel-ups

  Property of Paul303

• 15.2 Avg MPG

• My Sierra 2500 HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Jan 2020 • 37 Fuel-ups

  Property of Garrisonlorenz

• 13.9 Avg MPG

• 2500HD w/Camper

  2017 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Jul 2018 • 77 Fuel-ups

  Property of ChuckP62

• 11.6 Avg MPG

• GMC 2017 Sierra 2500 HD

  2017 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Jun 2018 • 411 Fuel-ups

  Property of Risser

• 12.7 Avg MPG

• 2017 Denali

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Mar 2017 • 244 Fuel-ups

  Property of jbdoughty01

• 14.7 Avg MPG

• Jordan’s GMC Denali 2500 HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Jun 2022 • 59 Fuel-ups

  Property of Novelty57

• 14.1 Avg MPG

• My Sierra 2500 HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Nov 2022 • 6 Fuel-ups

  Property of rickychac92

• 4.0 Avg MPG

• 2017 GMC 2500HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Jun 2018 • 142 Fuel-ups

  Property of TheLazyC

• 15.4 Avg MPG

• My Sierra 2500 HD

  2017 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Jul 2022 • 7 Fuel-ups

  Property of AndrewMT34

• 17.0 Avg MPG

• Big Red

  2017 GMC Sierra 2500 HD SLE 6.0L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Oct 2019 • 13 Fuel-ups

  Property of tamattu9

• 11.4 Avg MPG

• My Sierra 2500 HD

  2017 GMC Sierra 2500 HD SLE 6.0L V8 FLEX Automatic 6 Speed
  Added Nov 2017 • 80 Fuel-ups

  Property of Boor35

• 10.9 Avg MPG

• Sierra 2500 HD Silver

  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

• Truck

  2017 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Dec 2018 • 97 Fuel-ups

  Property of Jeepmike

• 14.8 Avg MPG

• My Sierra 2500 HD

  2017 GMC Sierra 2500 HD SLE 6.0L V8 FLEX Automatic 6 Speed
  Added Aug 2020 • 42 Fuel-ups

  Property of joshua95

• 11.2 Avg MPG

• My Sierra 2500 HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added May 2020 • 25 Fuel-ups

  Property of r61988

• 13.3 Avg MPG

• 2017 Sierra 2500 HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Oct 2017 • 82 Fuel-ups

  Property of tacoma7583

• 14.9 Avg MPG

• 2017 Denali HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added May 2017 • 79 Fuel-ups

  Property of cwood0425

• 15.1 Avg MPG

• My Sierra 2500 HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Dec 2017 • 127 Fuel-ups

  Property of fox454

• 15.8 Avg MPG

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