Based on data from 74 vehicles, 6,678 fuel-ups and 1,688,783 miles of driving, the 2004 GMC Sierra 2500 HD gets a combined Avg MPG of 13.18 with a 0.11 MPG margin of error.

Any Engine Type 6.0L V8 CNG (3) 6.0L V8 GAS (17) 6.6L V8 DIESEL (44) 8.1L V8 GAS (2) V8 DIESEL (3) V8 GAS (2) Any Body Style Standard Cab Pickup (1) Extended Cab Pickup (5) Crew Cab Pickup (12) Any Submodel WT (1) Base (8) SLE (23) SLT (35) Other (7)

Below you can see a distribution of the fuel-ups with 37 outliers (0.55%) removed.

Following shows the average MPG of each of the 74 vehicles in the system.

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• My Sierra 2500 HD

  2004 GMC Sierra 2500 HD 6.0L V8 GAS Automatic 5 Speed
  Added May 2020 • 4 Fuel-ups

  Property of zielinskiwerdna

• 11.9 Avg MPG

• My Sierra 2500 HD

  2004 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 5 Speed
  Added May 2018 • 35 Fuel-ups

  Property of Tide17

• 15.2 Avg MPG

• My Sierra 2500 HD

  2004 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added May 2019 • 8 Fuel-ups

  Property of chris-moody

• 17.8 Avg MPG

• Sierra 2500 HD

  2004 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Apr 2018 • 84 Fuel-ups

  Property of CruzrDave

• 13.4 Avg MPG

• GMC

  2004 GMC Sierra 2500 HD
  Added Jan 2020 • 6 Fuel-ups

  Property of ryanchapman42

• 13.3 Avg MPG

• Big White Diesel

  2004 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed Extended Cab Pickup
  Added Jun 2015 • 110 Fuel-ups

  Property of Libtekguy

• 15.4 Avg MPG

• Sierra 2500HD

  2004 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 4 Speed
  Added Mar 2017 • 38 Fuel-ups

  Property of frosti

• 10.3 Avg MPG

• My Sierra 2500 HD

  2004 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Apr 2018 • 9 Fuel-ups

  Property of drkhndymn

• 11.3 Avg MPG

• S10 GMC 2500 HD

  2004 GMC Sierra 2500 HD 6.0L V8 GAS Automatic 4 Speed
  Added Jul 2019 • 3 Fuel-ups

  Property of SwanTy

• 10.4 Avg MPG

• My Sierra 2500 HD

  2004 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 5 Speed
  Added May 2021 • 15 Fuel-ups

  Property of dmaxx04

• 13.4 Avg MPG

• Big red

  2004 GMC Sierra 2500 HD 6.0L V8 GAS Automatic 4 Speed
  Added Nov 2018 • 21 Fuel-ups

  Property of kevinfirefox11

• 10.4 Avg MPG

• GMC Sierra 2500 HD

  2004 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 5 Speed
  Added Aug 2015 • 122 Fuel-ups

  Property of HillbillySneaker

• 17.1 Avg MPG

• GapMtnSierra

  2004 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 4 Speed Standard Cab Pickup
  Added Feb 2017 • 7 Fuel-ups

  Property of GapMtn

• 12.5 Avg MPG

• Thirsty

  2004 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Jan 2013 • 32 Fuel-ups

  Property of cjb3

• 11.5 Avg MPG

• My Sierra 2500 HD

  2004 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 4 Speed
  Added May 2017 • 28 Fuel-ups

  Property of cryan27

• 15.3 Avg MPG

• Duramax

  2004 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed Crew Cab Pickup
  Added Nov 2016 • 5 Fuel-ups

  Property of DuramaxLB7

• 30.9 Avg MPG

• 2004 GMC 2500HD Crew Cab

  2004 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 5 Speed
  Added Sep 2016 • 88 Fuel-ups

  Property of mpierce

• 11.2 Avg MPG

• Truck

  2004 GMC Sierra 2500 HD SLT 6.0L V8 CNG Automatic 4 Speed
  Added Sep 2016 • 53 Fuel-ups

  Property of 01-2260

• 9.8 Avg MPG

• Truck

  2004 GMC Sierra 2500 HD SLT 8.1L V8 GAS Standard 6 Speed
  Added Sep 2016 • 53 Fuel-ups

  Property of 01-2260

• 9.8 Avg MPG

• Hoss

  2004 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 4 Speed
  Added Aug 2016 • 170 Fuel-ups

  Property of Papa_Grizz

• 9.4 Avg MPG

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