Based on data from 39 vehicles, 2,876 fuel-ups and 764,119 miles of driving, the 2009 GMC Sierra 2500 HD gets a combined Avg MPG of 12.21 with a 0.13 MPG margin of error.

Any Engine Type 6.0L V8 GAS (17) 6.6L V8 DIESEL (17) V8 DIESEL (3) V8 GAS (2) Any Body Style Extended Cab Pickup (4) Crew Cab Pickup (12) Any Submodel WT (2) SLE (14) SLT (18) Other (5)

Below you can see a distribution of the fuel-ups with 54 outliers (1.84%) removed.

Following shows the average MPG of each of the 39 vehicles in the system.

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• My Sierra 2500 HD

  2009 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 6 Speed
  Added Oct 2018 • 157 Fuel-ups

  Property of lab4747

• 10.5 Avg MPG

• Floofy

  2009 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 6 Speed Extended Cab Pickup
  Added May 2020 • 235 Fuel-ups

  Property of Piotrowski

• 11.7 Avg MPG

• My Sierra 2500 HD

  2009 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2022 • 24 Fuel-ups

  Property of Tubb

• 14.0 Avg MPG

• 2009 GMC 2500 Duramax

  2009 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Nov 2013 • 273 Fuel-ups

  Property of PFTG20

• 14.6 Avg MPG

• GMC Sierra

  2009 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed Extended Cab Pickup
  Added May 2022 • 181 Fuel-ups

  Property of pcarst

• 11.7 Avg MPG

• Truck

  2009 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 6 Speed Crew Cab Pickup
  Added Nov 2019 • 198 Fuel-ups

  Property of robindks

• 11.9 Avg MPG

• Pewter Peanut

  2009 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 6 Speed
  Added Feb 2017 • 458 Fuel-ups

  Property of polymonkey

• 10.7 Avg MPG

• 2009 GMC Sierra 2500 HD

  2009 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 5 Speed Crew Cab Pickup
  Added Jan 2018 • 62 Fuel-ups

  Property of rhpackard

• 15.5 Avg MPG

• Red Truck

  2009 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 6 Speed
  Added May 2023 • 49 Fuel-ups

  Property of 2009Terrain

• 9.3 Avg MPG

• 09 Gmc

  2009 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed
  Added Nov 2019 • 94 Fuel-ups

  Property of thepetzahut

• 13.6 Avg MPG

• My 09 LMM Duramax

  2009 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Feb 2023 • 16 Fuel-ups

  Property of OKCrawler

• 17.3 Avg MPG

• GMC 2500

  2009 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 6 Speed Crew Cab Pickup
  Added Aug 2019 • 10 Fuel-ups

  Property of woodjod

• 11.1 Avg MPG

• Adam truck

  2009 GMC Sierra 2500 HD WT 6.0L V8 GAS Automatic 6 Speed Extended Cab Pickup
  Added Nov 2021 • 8 Fuel-ups

  Property of RunninL8

• 7.8 Avg MPG

• Sierra

  2009 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Jan 2018 • 143 Fuel-ups

  Property of mtfredricks

• 17.1 Avg MPG

• GMC Sierra 2500 HD

  2009 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Apr 2019 • 66 Fuel-ups

  Property of macdaddytn

• 14.7 Avg MPG

• GMC Truck

  2009 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 6 Speed Crew Cab Pickup
  Added Jan 2021 • 9 Fuel-ups

  Property of Mylore

• 9.9 Avg MPG

• My Sierra 2500 HD

  2009 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 6 Speed
  Added Aug 2021 • 75 Fuel-ups

  Property of scrooche

• 13.1 Avg MPG

• GMC SLT

  2009 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 6 Speed
  Added Aug 2016 • 405 Fuel-ups

  Property of kuneyr

• 12.0 Avg MPG

• 2009 GMC SIERRA

  2009 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2016 • 28 Fuel-ups

  Property of wdkgecko

• 13.7 Avg MPG

• My dirtymax

  2009 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Dec 2017 • 47 Fuel-ups

  Property of dirtymax2009

• 13.0 Avg MPG

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