Based on data from 75 vehicles, 5,813 fuel-ups and 1,394,570 miles of driving, the 2005 GMC Sierra 2500 HD gets a combined Avg MPG of 13.10 with a 0.09 MPG margin of error.

Any Engine Type 6.0L V8 CNG (4) 6.0L V8 GAS (15) 6.6L V8 DIESEL (46) GAS (1) V8 DIESEL (3) V8 GAS (2) Any Body Style Standard Cab Pickup (1) Extended Cab Pickup (4) Crew Cab Pickup (11) Any Submodel WT (2) Base (4) SLE (24) SLT (38) Other (7)

Below you can see a distribution of the fuel-ups with 103 outliers (1.74%) removed.

Following shows the average MPG of each of the 75 vehicles in the system.

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• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added May 2023 • 85 Fuel-ups

  Property of tman23

• 14.9 Avg MPG

• Pete’s Truck

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Oct 2023 • 28 Fuel-ups

  Property of Knightrider666

• 15.2 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.0L V8 CNG Automatic 4 Speed
  Added Nov 2019 • 429 Fuel-ups

  Property of 2005redlly

• 14.3 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Nov 2018 • 138 Fuel-ups

  Property of evanmoore

• 15.3 Avg MPG

• 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 5 Speed Crew Cab Pickup
  Added Sep 2016 • 897 Fuel-ups

  Property of Davidsi21

• 11.1 Avg MPG

• GMC Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Jan 2023 • 23 Fuel-ups

  Property of BVDZ

• 9.7 Avg MPG

• Max

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Aug 2020 • 36 Fuel-ups

  Property of WilderFatBoy

• 13.6 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Jan 2023 • 13 Fuel-ups

  Property of azevedofam

• 15.1 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.0L V8 CNG Automatic 4 Speed
  Added Feb 2022 • 85 Fuel-ups

  Property of bow58

• 10.9 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Jan 2018 • 3 Fuel-ups

  Property of pharmgdbcruze

• 266.5 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD WT 6.6L V8 DIESEL Automatic 5 Speed
  Added Mar 2023 • 20 Fuel-ups

  Property of elijaheje

• 15.1 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 4 Speed
  Added Dec 2020 • 14 Fuel-ups

  Property of scooter1116

• 12.8 Avg MPG

• Casey’s GMC 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 5 Speed
  Added May 2022 • 16 Fuel-ups

  Property of Warmerdam

• 12.1 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Apr 2022 • 56 Fuel-ups

  Property of Noah99

• 13.9 Avg MPG

• Gmc

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Jul 2017 • 80 Fuel-ups

  Property of bmctier

• 16.0 Avg MPG

• Truck Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 5 Speed
  Added Feb 2022 • 8 Fuel-ups

  Property of chipandfish

• 9.6 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 5 Speed
  Added Feb 2016 • 226 Fuel-ups

  Property of kdhanson

• 15.1 Avg MPG

• Big Jimmy

  2005 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 4 Speed Extended Cab Pickup
  Added Dec 2020 • 26 Fuel-ups

  Property of Nvridgerunners

• 11.0 Avg MPG

• GMC Pickup

  2005 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 5 Speed Crew Cab Pickup
  Added Sep 2011 • 235 Fuel-ups

  Property of jake2

• 12.5 Avg MPG

• LLY

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Apr 2021 • 12 Fuel-ups

  Property of jwmontoya

• 17.0 Avg MPG

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