Based on data from 24 vehicles, 731 fuel-ups and 281,869 miles of driving, the 2019 GMC Sierra 2500 HD gets a combined Avg MPG of 13.98 with a 0.27 MPG margin of error.

Any Engine Type 6.0L V8 FLEX (5) 6.0L V8 GAS (1) 6.6L V8 DIESEL (18) Any Body Style Extended Cab Pickup (1) Crew Cab Pickup (9) Cab & Chassis - Crew Cab (1) Any Submodel Base (2) SLT (7) Denali (15)

Below you can see a distribution of the fuel-ups with 9 outliers (1.22%) removed.

Following shows the average MPG of each of the 24 vehicles in the system.

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• GMC Denali 2500 HD

  2019 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Jun 2019 • 45 Fuel-ups

  Property of JMeegan

• 16.0 Avg MPG

• GMC Sierra 2500 HD 4WD

  2019 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Jun 2020 • 18 Fuel-ups

  Property of midwestcruiser

• 14.5 Avg MPG

• My Sierra 2500 HD

  2019 GMC Sierra 2500 HD Denali 6.0L V8 FLEX Automatic 6 Speed
  Added Jul 2020 • 25 Fuel-ups

  Property of cab5385

• 15.7 Avg MPG

• 19 Denali

  2019 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Apr 2020 • 26 Fuel-ups

  Property of rick437

• 11.1 Avg MPG

• Sierra 2500 HD

  2019 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Aug 2019 • 45 Fuel-ups

  Property of GSD671

• 14.7 Avg MPG

• My Sierra 2500 HD

  2019 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Apr 2019 • 20 Fuel-ups

  Property of CamaroRacing12

• 16.5 Avg MPG

• My Sierra 2500 HD

  2019 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Jul 2019 • 41 Fuel-ups

  Property of drw94

• 13.6 Avg MPG

• 2019 Sierra 2500 HD

  2019 GMC Sierra 2500 HD 6.0L V8 FLEX Automatic 6 Speed
  Added May 2019 • 64 Fuel-ups

  Property of Jason35

• 12.2 Avg MPG

• Kyra Hot

  2019 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Cab & Chassis - Crew Cab
  Added Sep 2018 • 51 Fuel-ups

  Property of GillaFunk

• 15.0 Avg MPG

• My Sierra 2500 HD

  2019 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Dec 2020 • 5 Fuel-ups

  Property of Sharp07GT

• 14.8 Avg MPG

• GMC 2500HD

  2019 GMC Sierra 2500 HD SLT 6.0L V8 FLEX Automatic 6 Speed Crew Cab Pickup
  Added Sep 2019 • 43 Fuel-ups

  Property of soundwave216

• 10.2 Avg MPG

• Gmc Sierra 2500

  2019 GMC Sierra 2500 HD 6.0L V8 GAS Automatic 6 Speed Extended Cab Pickup
  Added May 2019 • 32 Fuel-ups

  Property of buggin2004

• 11.7 Avg MPG

• My Sierra 2500 HD

  2019 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added May 2019 • 74 Fuel-ups

  Property of 3garretts

• 13.6 Avg MPG

• My Sierra 2500 HD

  2019 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2019 • 47 Fuel-ups

  Property of 2ndsteel

• 15.2 Avg MPG

• Clean Alli

  2019 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added May 2020 • 28 Fuel-ups

  Property of TheBatman9441

• 14.1 Avg MPG

• 2019 Denali

  2019 GMC Sierra 2500 HD Denali 6.0L V8 FLEX Automatic 6 Speed
  Added Oct 2019 • 29 Fuel-ups

  Property of Hoserr

• 16.5 Avg MPG

• My Sierra 2500 HD

  2019 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Dec 2020 • 3 Fuel-ups

  Property of Dpin

• 14.1 Avg MPG

• Rick

  2019 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2018 • 42 Fuel-ups

  Property of d800306

• 15.3 Avg MPG

• Denali L5P

  2019 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Jan 2020 • 24 Fuel-ups

  Property of Boostedls87

• 14.7 Avg MPG

• My Sierra 2500 HD

  2019 GMC Sierra 2500 HD SLT 6.0L V8 FLEX Automatic 6 Speed
  Added Apr 2020 • 15 Fuel-ups

  Property of fasdon

• 9.2 Avg MPG

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