Based on data from 90 vehicles, 9,273 fuel-ups and 2,325,659 miles of driving, the 2006 GMC Sierra 2500 HD gets a combined Avg MPG of 14.41 with a 0.07 MPG margin of error.

Any Engine Type 6.0L V8 GAS (14) 6.6L V8 DIESEL (68) V8 DIESEL (3) V8 GAS (3) Any Body Style Extended Cab Pickup (4) Crew Cab Pickup (26) Any Submodel SL (4) WT (5) SLE (20) SLT (54) Other (7)

Below you can see a distribution of the fuel-ups with 139 outliers (1.48%) removed.

Following shows the average MPG of each of the 90 vehicles in the system.

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• My Sierra 2500 HD

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Aug 2017 • 119 Fuel-ups

  Property of PrestonL

• 15.2 Avg MPG

• Gmc Sierra

  2006 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Nov 2017 • 16 Fuel-ups

  Property of cement

• 13.7 Avg MPG

• My Sierra 2500 HD

  2006 GMC Sierra 2500 HD SLT 6.0L V8 GAS Automatic 4 Speed
  Added Oct 2020 • 13 Fuel-ups

  Property of TJLong1121

• 10.1 Avg MPG

• White Lightning

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Jan 2020 • 59 Fuel-ups

  Property of 1122steven

• 17.7 Avg MPG

• Quiv

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2017 • 153 Fuel-ups

  Property of JordanTr

• 16.1 Avg MPG

• Andromeda

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Nov 2017 • 192 Fuel-ups

  Property of Dankin56

• 13.2 Avg MPG

• Truck

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Jan 2017 • 531 Fuel-ups

  Property of sierraduramaxdan

• 14.6 Avg MPG

• 2006 GMC Sierra 2500HD

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Jun 2018 • 364 Fuel-ups

  Property of tkemo648

• 16.6 Avg MPG

• D-Max work truck

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added May 2018 • 195 Fuel-ups

  Property of sconlee03

• 13.4 Avg MPG

• 2500HD

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Aug 2018 • 296 Fuel-ups

  Property of hummingbird63012

• 15.0 Avg MPG

• GMC

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Mar 2017 • 315 Fuel-ups

  Property of BlueyZassoff

• 14.5 Avg MPG

• 04 Yukon XL LBZ

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Mar 2018 • 126 Fuel-ups

  Property of jamisondonato

• 15.6 Avg MPG

• DirtyMax

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added May 2019 • 58 Fuel-ups

  Property of polarisn1

• 15.3 Avg MPG

• Big Red

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Jan 2019 • 30 Fuel-ups

  Property of RT334

• 14.2 Avg MPG

• Justin woods

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Dec 2017 • 225 Fuel-ups

  Property of 06lbz

• 15.0 Avg MPG

• GMC Pickup

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed
  Added Sep 2016 • 303 Fuel-ups

  Property of ernie6767

• 14.6 Avg MPG

• LBZ

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Aug 2020 • 28 Fuel-ups

  Property of WallStreet

• 14.2 Avg MPG

• 2006 Duramax

  2006 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Apr 2018 • 142 Fuel-ups

  Property of oskam6

• 14.9 Avg MPG

• GMC Sierra 2500HD

  2006 GMC Sierra 2500 HD SLE
  Added Mar 2018 • 125 Fuel-ups

  Property of lb7duramax24

• 17.0 Avg MPG

• GMC 2500

  2006 GMC Sierra 2500 HD SLE 6.6L V8 DIESEL Automatic 6 Speed Extended Cab Pickup
  Added Oct 2019 • 86 Fuel-ups

  Property of ProCycle

• 15.2 Avg MPG

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