Based on data from 109 vehicles, 6,270 fuel-ups and 1,834,930 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 (5.52%) removed.

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

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• GMC

  2005 GMC Sierra 1500 4.3L V6 GAS Automatic 4 Speed Standard Cab Pickup
  Added Jun 2014 • 339 Fuel-ups

  Property of cbeau69

• 16.7 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 4 Speed
  Added Feb 2024 • 19 Fuel-ups

  Property of dublg

• 14.4 Avg MPG

• My Pickup

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Apr 2024 • 49 Fuel-ups

  Property of JeffBru

• 12.2 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Aug 2020 • 86 Fuel-ups

  Property of WoodyDuNord

• 14.2 Avg MPG

• Sierra

  2005 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Nov 2017 • 312 Fuel-ups

  Property of hybridz31

• 13.2 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Sep 2024 • 7 Fuel-ups

  Property of Dickinballs

• 16.3 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
  Added Mar 2020 • 129 Fuel-ups

  Property of lmon50

• 16.1 Avg MPG

• Black Beauty

  2005 GMC Sierra 1500 Denali 6.0L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Sep 2022 • 32 Fuel-ups

  Property of rjnelson3

• 13.6 Avg MPG

• Sierra

  2005 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
  Added May 2023 • 22 Fuel-ups

  Property of CodyH95

• 17.3 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Jun 2021 • 111 Fuel-ups

  Property of Stalnaker2_0

• 14.4 Avg MPG

• Sierra

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Sep 2024 • 4 Fuel-ups

  Property of caseyneal

• 45.8 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
  Added Jun 2021 • 27 Fuel-ups

  Property of jmia

• 12.7 Avg MPG

• 2005 Sierra

  2005 GMC Sierra 1500 SLE 4.8L V8 GAS Automatic 4 Speed
  Added Feb 2023 • 366 Fuel-ups

  Property of hkfuey

• 17.4 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added May 2023 • 31 Fuel-ups

  Property of sparky058

• 16.1 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added May 2018 • 332 Fuel-ups

  Property of Glockskie

• 14.5 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Mar 2020 • 59 Fuel-ups

  Property of jessejames4503

• 14.8 Avg MPG

• 2005 Sierra

  2005 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Feb 2019 • 78 Fuel-ups

  Property of jkgoodman

• 15.1 Avg MPG

• GMC Truck

  2005 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
  Added Mar 2017 • 200 Fuel-ups

  Property of BrentKlassen

• 13.9 Avg MPG

• 05 GMC Sierra Denali

  2005 GMC Sierra 1500 Denali 6.0L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Jan 2020 • 41 Fuel-ups

  Property of igpoobah

• 13.3 Avg MPG

• GMC Sierra

  2005 GMC Sierra 1500 WT 5.3L V8 GAS Automatic 4 Speed Standard Cab Pickup
  Added Sep 2022 • 23 Fuel-ups

  Property of Symnsez

• 16.8 Avg MPG

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