Based on data from 81 vehicles, 6,246 fuel-ups and 1,502,632 miles of driving, the 2005 GMC Sierra 2500 HD gets a combined Avg MPG of 13.11 with a 0.09 MPG margin of error.

Any Engine Type 6.0L V8 CNG (4) 6.0L V8 GAS (19) 6.6L V8 DIESEL (48) GAS (1) V8 DIESEL (3) V8 GAS (2) Any Body Style Standard Cab Pickup (1) Extended Cab Pickup (5) Crew Cab Pickup (12) Any Submodel WT (3) Base (4) SLE (25) SLT (42) Other (7)

Below you can see a distribution of the fuel-ups with 111 outliers (1.75%) removed.

Following shows the average MPG of each of the 81 vehicles in the system.

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• GMC Pickup

  2005 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 5 Speed Crew Cab Pickup
  Added Sep 2011 • 236 Fuel-ups

  Property of jake2

• 12.5 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

• 2005 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

• Max

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed Crew Cab Pickup
  Added Nov 2024 • 131 Fuel-ups

  Property of JBob83

• 14.4 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

• 05 Sierra 2500hd

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

  Property of Cooki_Monstre

• 9.3 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added May 2022 • 4 Fuel-ups

  Property of mtondi93

• 12.3 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 5 Speed
  Added Aug 2022 • 3 Fuel-ups

  Property of skillier795

• 25.7 Avg MPG

• '05 GMC

  2005 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 4 Speed Extended Cab Pickup
  Added Oct 2017 • 109 Fuel-ups

  Property of Kamotz

• 9.8 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Sep 2022 • 3 Fuel-ups

  Property of ctj71

• 14.7 Avg MPG

• 312 - 2005 GMC Sierra - Boom

  2005 GMC Sierra 2500 HD 6.0L V8 GAS Automatic 4 Speed Standard Cab Pickup
  Added Aug 2019 • 15 Fuel-ups

  Property of gracz

• 9.0 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Oct 2021 • 15 Fuel-ups

  Property of Kevinshinault

• 19.9 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Jul 2021 • 4 Fuel-ups

  Property of oliverb97

• 11.9 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Jun 2020 • 171 Fuel-ups

  Property of 73driver

• 12.2 Avg MPG

• Sierra 2500hd Diesel

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed Crew Cab Pickup
  Added Jun 2020 • 69 Fuel-ups

  Property of Justinleel91

• 16.8 Avg MPG

• Sierra

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed Crew Cab Pickup
  Added Feb 2021 • 4 Fuel-ups

  Property of curgon01

• 13.5 Avg MPG

• GMC Serria

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Sep 2016 • 322 Fuel-ups

  Property of RauT

• 13.7 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 5 Speed
  Added Jan 2015 • 345 Fuel-ups

  Property of cpk123kli456

• 14.6 Avg MPG

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