Based on data from 109 vehicles, 6,273 fuel-ups and 1,835,773 miles of driving, the 2005 GMC Sierra 1500 gets a combined Avg MPG of 14.95 with a 0.07 MPG margin of error.

Any Engine Type 4.3L V6 GAS (11) 4.8L V8 GAS (7) 5.3L V8 FLEX (7) 5.3L V8 GAS (57) 6.0L V8 GAS (6) V6 GAS (3) V8 GAS (15) Any Body Style Standard Cab Pickup (6) Extended Cab Pickup (9) Crew Cab Pickup (14) Any Submodel WT (4) Denali (6) Base (13) SLT (28) SLE (38) Other (20)

Below you can see a distribution of the fuel-ups with 366 outliers (5.51%) removed.

Following shows the average MPG of each of the 109 vehicles in the system.

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• GMC Truck

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Jun 2017 • 129 Fuel-ups

  Property of dspatzier

• 16.8 Avg MPG

• Jen Truck

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS
  Added Feb 2019 • 261 Fuel-ups

  Property of jenhaz18

• 17.2 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 5.3L V8 GAS Automatic 4 Speed
  Added Nov 2022 • 17 Fuel-ups

  Property of SmartyMarty

• 14.6 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Sep 2022 • 9 Fuel-ups

  Property of carolinebeall

• 13.3 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLE 4.8L V8 GAS Automatic 4 Speed
  Added May 2023 • 11 Fuel-ups

  Property of Joab10

• 14.0 Avg MPG

• Farm Truck

  2005 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed Extended Cab Pickup
  Added Sep 2015 • 151 Fuel-ups

  Property of MikeT

• 14.3 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Sep 2023 • 3 Fuel-ups

  Property of blake17

• 13.0 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 Denali 6.0L V8 GAS Automatic 4 Speed
  Added May 2019 • 3 Fuel-ups

  Property of 3gpharms

• 14.9 Avg MPG

• GMC Sierra 1500

  2005 GMC Sierra 1500 WT 4.3L V6 GAS Manual 5 Speed Standard Cab Pickup
  Added May 2022 • 38 Fuel-ups

  Property of acjet88

• 16.9 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
  Added Apr 2023 • 4 Fuel-ups

  Property of bud77

• 53.8 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 4 Speed
  Added Aug 2019 • 41 Fuel-ups

  Property of minimonkey

• 16.3 Avg MPG

• Sierra

  2005 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
  Added Jun 2017 • 74 Fuel-ups

  Property of YvanSt

• 15.7 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 4.3L V6 GAS Automatic 4 Speed
  Added Nov 2019 • 4 Fuel-ups

  Property of Aliss

• 22.1 Avg MPG

• GMC Sierra

  2005 GMC Sierra 1500 SLE 4.8L V8 GAS Automatic 4 Speed
  Added May 2019 • 30 Fuel-ups

  Property of Lifted94XLT

• 18.1 Avg MPG

• The Hulk!

  2005 GMC Sierra 1500 4.8L V8 GAS Automatic 4 Speed
  Added Jan 2019 • 47 Fuel-ups

  Property of hunterham7

• 15.5 Avg MPG

• GMC

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Dec 2021 • 82 Fuel-ups

  Property of smnorth89

• 14.1 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLE 4.8L V8 GAS Automatic 4 Speed
  Added Jan 2018 • 255 Fuel-ups

  Property of wbreavis

• 16.5 Avg MPG

• Sierra 1500

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Feb 2022 • 11 Fuel-ups

  Property of greatscorpion

• 14.2 Avg MPG

• Sierra 1500

  2005 GMC Sierra 1500 4.3L V6 GAS Automatic 4 Speed
  Added Aug 2021 • 15 Fuel-ups

  Property of Warrior88

• 14.3 Avg MPG

• Sierra

  2005 GMC Sierra 1500 4.8L V8 GAS Automatic 4 Speed Extended Cab Pickup
  Added Sep 2017 • 112 Fuel-ups

  Property of andrewvanh

• 17.1 Avg MPG

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