Based on data from 81 vehicles, 6,224 fuel-ups and 1,497,826 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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• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 5 Speed
  Added Nov 2016 • 17 Fuel-ups

  Property of straussman

• 15.5 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.0L V8 GAS Automatic 5 Speed
  Added Apr 2017 • 7 Fuel-ups

  Property of girlietruck17

• 8.0 Avg MPG

• LLY Duramax

  2005 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 5 Extended Cab Pickup (4 Door)
  Added Jul 2015 • 89 Fuel-ups

  Property of chandler583

• 16.1 Avg MPG

• Damn Diesel

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed Crew Cab Pickup
  Added Dec 2017 • 145 Fuel-ups

  Property of ShowStopper71Z28

• 13.8 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Oct 2016 • 4 Fuel-ups

  Property of kitchenking

• 11.3 Avg MPG

• My Sierra 2500 HD

  2005 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 5 Speed
  Added Dec 2016 • 4 Fuel-ups

  Property of Tom23

• 15.3 Avg MPG

• Duramax

  2005 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 5 Speed
  Added Sep 2016 • 4 Fuel-ups

  Property of Conner43778

• 14.3 Avg MPG

• GMC

  2005 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 5 Speed
  Added Apr 2017 • 76 Fuel-ups

  Property of joeydcarr

• 15.2 Avg MPG

• GMC

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Dec 2016 • 73 Fuel-ups

  Property of DenaliDude

• 14.4 Avg MPG

• Plow

  2005 GMC Sierra 2500 HD
  Added Jan 2014 • 50 Fuel-ups

  Property of alonz

• 8.6 Avg MPG

• Dura

  2005 GMC Sierra 2500 HD SLT
  Added Nov 2015 • 5 Fuel-ups

  Property of cln4690

• 12.7 Avg MPG

• GMC 2500HD

  2005 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 4 Speed Crew Cab Pickup
  Added Jul 2014 • 28 Fuel-ups

  Property of medlinracing

• 14.3 Avg MPG

• 2005 GMC

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Speed
  Added Nov 2016 • 10 Fuel-ups

  Property of treybn

• 24.1 Avg MPG

• MyMax

  2005 GMC Sierra 2500 HD SLT
  Added Sep 2013 • 45 Fuel-ups

  Property of BigAlTDi

• 22.4 Avg MPG

• GMC

  2005 GMC Sierra 2500 HD DIESEL V8
  Added Jul 2011 • 152 Fuel-ups

  Property of Blackhawk878

• 15.8 Avg MPG

• Project Ressurection

  2005 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 5 Crew Cab Pickup (4 Door)
  Added Jul 2012 • 103 Fuel-ups

  Property of TPDiesel

• 14.2 Avg MPG

• Ghost

  2005 GMC Sierra 2500 HD GAS
  Added Oct 2013 • 7 Fuel-ups

  Property of RGSLA

• 14.4 Avg MPG

• Work truck

  2005 GMC Sierra 2500 HD GAS V8
  Added Mar 2013 • 3 Fuel-ups

  Property of Benjaco

• 16.5 Avg MPG

• GMC

  2005 GMC Sierra 2500 HD DIESEL V8
  Added Feb 2013 • 3 Fuel-ups

  Property of dieselmann35

• 16.9 Avg MPG

• Silver Bullet

  2005 GMC Sierra 2500 HD DIESEL V8
  Added Jul 2011 • 27 Fuel-ups

  Property of TPDiesel

• 18.5 Avg MPG

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