Based on data from 75 vehicles, 6,692 fuel-ups and 1,692,187 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 (45) 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 (36) 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 75 vehicles in the system.

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• 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

• jimmy

  2004 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 5 Speed Crew Cab Pickup
  Added Jan 2015 • 62 Fuel-ups

  Property of 04jimmy

• 11.6 Avg MPG

• Black GMC

  2004 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Extended Cab Pickup (4 Door)
  Added Aug 2015 • 5 Fuel-ups

  Property of evander5

• 16.4 Avg MPG

• Emmett

  2004 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 4 Speed Extended Cab Pickup
  Added Jun 2011 • 143 Fuel-ups

  Property of mack505

• 15.2 Avg MPG

• Dan's Truck

  2004 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Mar 2017 • 18 Fuel-ups

  Property of steam548

• 18.9 Avg MPG

• My Sierra 2500 HD

  2004 GMC Sierra 2500 HD SLT 6.6L DIESEL V8 Automatic 5 Cab & Chassis (4 Door)
  Added Jan 2015 • 16 Fuel-ups

  Property of akando

• 12.9 Avg MPG

• Hoss

  2004 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed Crew Cab Pickup
  Added Oct 2017 • 120 Fuel-ups

  Property of boar350

• 16.2 Avg MPG

• GMC Sierra

  2004 GMC Sierra 2500 HD
  Added Nov 2013 • 6 Fuel-ups

  Property of Belskey

• 16.1 Avg MPG

• Roberto's Rig

  2004 GMC Sierra 2500 HD DIESEL V8
  Added Nov 2013 • 15 Fuel-ups

  Property of theroberto

• 14.7 Avg MPG

• Truck

  2004 GMC Sierra 2500 HD GAS V8
  Added Dec 2013 • 10 Fuel-ups

  Property of Rockman18

• 10.7 Avg MPG

• Duramax

  2004 GMC Sierra 2500 HD DIESEL V8
  Added Dec 2013 • 18 Fuel-ups

  Property of hogdoc

• 13.8 Avg MPG

• 2004 GMC 2500HD 2WD 6.0 Gas 4 Spd Auto

  2004 GMC Sierra 2500 HD GAS V8
  Added Mar 2013 • 8 Fuel-ups

  Property of Storming

• 12.4 Avg MPG

• gmc

  2004 GMC Sierra 2500 HD
  Added Mar 2013 • 5 Fuel-ups

  Property of nick45l

• 14.1 Avg MPG

• Dirty

  2004 GMC Sierra 2500 HD DIESEL V8
  Added Aug 2012 • 14 Fuel-ups

  Property of dirtymax13

• 16.5 Avg MPG

• Durmie

  2004 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Sep 2016 • 87 Fuel-ups

  Property of RealBatman

• 6.3 Avg MPG

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