Based on data from 55 vehicles, 4,433 fuel-ups and 1,494,178 miles of driving, the 2017 GMC Sierra 2500 HD gets a combined Avg MPG of 13.50 with a 0.10 MPG margin of error.

Any Engine Type 6.0L V8 FLEX (10) 6.6L V8 DIESEL (45) Any Body Style Sport Utility (1) Crew Cab Pickup (10) Any Submodel Base (3) SLE (6) SLT (10) Denali (36)

Below you can see a distribution of the fuel-ups with 77 outliers (1.71%) removed.

Following shows the average MPG of each of the 55 vehicles in the system.

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• My Sierra 2500 HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Mar 2017 • 104 Fuel-ups

  Property of harper17

• 13.4 Avg MPG

• My Sierra 2500 HD

  2017 GMC Sierra 2500 HD 6.0L V8 FLEX Automatic 6 Speed
  Added Aug 2021 • 61 Fuel-ups

  Property of zap_25

• 11.5 Avg MPG

• My Sierra 2500 HD

  2017 GMC Sierra 2500 HD 6.0L V8 FLEX Automatic 6 Speed
  Added Nov 2018 • 341 Fuel-ups

  Property of brianjkmorgan

• 12.7 Avg MPG

• Hellgate Wind

  2017 GMC Sierra 2500 HD 6.0L V8 FLEX Automatic 6 Speed
  Added Sep 2021 • 69 Fuel-ups

  Property of Moynaclan

• 10.8 Avg MPG

• 2017 Sierra 2500 HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Mar 2017 • 321 Fuel-ups

  Property of crjones

• 13.9 Avg MPG

• My Sierra 2500 HD

  2017 GMC Sierra 2500 HD Denali 6.0L V8 FLEX Automatic 6 Speed
  Added Sep 2021 • 19 Fuel-ups

  Property of rbeelee

• 13.4 Avg MPG

• 2017 Sierra 2500 HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Jun 2021 • 24 Fuel-ups

  Property of russman27

• 15.5 Avg MPG

• Novelty’s GMC Denali 2500 HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Jun 2022 • 30 Fuel-ups

  Property of Novelty57

• 13.2 Avg MPG

• Sierra 2500 HD 2017

  2017 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Aug 2017 • 359 Fuel-ups

  Property of lsfreezn

• 13.5 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 • 80 Fuel-ups

  Property of Zane62

• 15.7 Avg MPG

• GMC 2017 Sierra 2500 HD

  2017 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Jun 2018 • 357 Fuel-ups

  Property of Risser

• 13.2 Avg MPG

• My Sierra 2500 HD

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Aug 2017 • 421 Fuel-ups

  Property of Paul303

• 15.6 Avg MPG

• Sierra 2500 HD Denali

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Nov 2019 • 126 Fuel-ups

  Property of ellisjte

• 13.3 Avg MPG

• D-Max17

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Jun 2021 • 59 Fuel-ups

  Property of harleydude63

• 12.5 Avg MPG

• Denali

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Mar 2017 • 211 Fuel-ups

  Property of jbdoughty01

• 14.6 Avg MPG

• Denali Duramax

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Dec 2021 • 29 Fuel-ups

  Property of Neely25

• 17.0 Avg MPG

• Sierra Denali 2017

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Jun 2019 • 74 Fuel-ups

  Property of jp0590

• 14.6 Avg MPG

• 2017 Denali

  2017 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Jan 2022 • 43 Fuel-ups

  Property of tritz4

• 11.5 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 • 162 Fuel-ups

  Property of HntngTrout

• 12.3 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

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