Based on data from 61 vehicles, 4,962 fuel-ups and 1,748,754 miles of driving, the 2011 GMC Sierra 2500 HD gets a combined Avg MPG of 13.59 with a 0.08 MPG margin of error.

Any Engine Type 6.0L V8 FLEX (6) 6.0L V8 GAS (5) 6.6L V8 DIESEL (36) GAS (1) V8 DIESEL (8) V8 GAS (4) Any Body Style Standard Cab Pickup (1) Extended Cab Pickup (3) Crew Cab Pickup (13) Any Submodel WT (3) SLE (12) Denali (16) SLT (17) Other (13)

Below you can see a distribution of the fuel-ups with 199 outliers (3.86%) removed.

Following shows the average MPG of each of the 61 vehicles in the system.

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• LML Denali

  2011 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Dec 2022 • 38 Fuel-ups

  Property of jwmontoya

• 15.8 Avg MPG

• GMC

  2011 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Feb 2021 • 147 Fuel-ups

  Property of reo

• 14.3 Avg MPG

• My Sierra 2500 HD

  2011 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Oct 2021 • 248 Fuel-ups

  Property of CorgiLover23

• 13.3 Avg MPG

• Sierra 2500 HD

  2011 GMC Sierra 2500 HD Denali 6.0L V8 FLEX Automatic 6 Speed
  Added May 2023 • 62 Fuel-ups

  Property of Fj3442

• 12.9 Avg MPG

• Bob's GMC Denali

  2011 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Jan 2021 • 192 Fuel-ups

  Property of Uvgotbob

• 13.3 Avg MPG

• Black Beauty

  2011 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Nov 2023 • 9 Fuel-ups

  Property of moyerdm

• 10.0 Avg MPG

• 2011 Duramax

  2011 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Aug 2022 • 66 Fuel-ups

  Property of truckman94

• 14.5 Avg MPG

• Truck

  2011 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Apr 2018 • 355 Fuel-ups

  Property of Go2Guy81

• 14.3 Avg MPG

• GMC

  2011 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 6 Speed
  Added Nov 2019 • 415 Fuel-ups

  Property of Ffterman

• 13.8 Avg MPG

• Baby Blue

  2011 GMC Sierra 2500 HD SLE 6.0L V8 FLEX Automatic 6 Speed
  Added Aug 2019 • 79 Fuel-ups

  Property of jlewis

• 13.1 Avg MPG

• 11 GMC Heavy D

  2011 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Dec 2019 • 19 Fuel-ups

  Property of tbspangler

• 12.8 Avg MPG

• GMC Sierra 2500 HD

  2011 GMC Sierra 2500 HD Denali 6.0L V8 FLEX Automatic 6 Speed
  Added Jun 2023 • 22 Fuel-ups

  Property of alphaimpressions

• 11.5 Avg MPG

• Silver Fox

  2011 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 6 Speed Crew Cab Pickup
  Added Oct 2017 • 78 Fuel-ups

  Property of csiler

• 9.5 Avg MPG

• The Nali

  2011 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
  Added Mar 2020 • 18 Fuel-ups

  Property of Wyatt4114

• 12.3 Avg MPG

• My Sierra 2500 HD

  2011 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
  Added Mar 2023 • 19 Fuel-ups

  Property of 05rioS2K

• 8.3 Avg MPG

• 2011 Sierra 2500 HD

  2011 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Jan 2021 • 87 Fuel-ups

  Property of GussyP

• 16.4 Avg MPG

• 2011 Sierra 2500 HD

  2011 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Nov 2018 • 125 Fuel-ups

  Property of Sandhopper

• 14.5 Avg MPG

• My Sierra 2500 HD

  2011 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 6 Speed
  Added Jun 2022 • 14 Fuel-ups

  Property of Karlita

• 12.6 Avg MPG

• Sierra

  2011 GMC Sierra 2500 HD DIESEL V8
  Added Sep 2011 • 291 Fuel-ups

  Property of SpecMiata23

• 14.7 Avg MPG

• 2011 Duramax

  2011 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
  Added Nov 2021 • 172 Fuel-ups

  Property of JarrettR

• 10.7 Avg MPG

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