Based on data from 103 vehicles, 5,743 fuel-ups and 1,693,621 miles of driving, the 2005 GMC Sierra 1500 gets a combined Avg MPG of 15.01 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 (6) 5.3L V8 GAS (53) 6.0L V8 GAS (5) V6 GAS (3) V8 GAS (15) Any Body Style Standard Cab Pickup (6) Extended Cab Pickup (9) Crew Cab Pickup (13) Any Submodel WT (4) Denali (5) Base (13) SLT (27) SLE (34) Other (20)

Below you can see a distribution of the fuel-ups with 369 outliers (6.04%) removed.

Following shows the average MPG of each of the 103 vehicles in the system.

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• My Sierra 1500

  2005 GMC Sierra 1500 SLE 4.8L V8 GAS Automatic 4 Speed
  Added May 2023 • 3 Fuel-ups

  Property of Joab10

• 15.0 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Mar 2020 • 43 Fuel-ups

  Property of jessejames4503

• 14.2 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Aug 2020 • 56 Fuel-ups

  Property of WoodyDuNord

• 13.7 Avg MPG

• GMC

  2005 GMC Sierra 1500 4.3L V6 GAS Automatic 4 Speed Standard Cab Pickup
  Added Jun 2014 • 254 Fuel-ups

  Property of cbeau69

• 16.8 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
  Added Mar 2020 • 101 Fuel-ups

  Property of lmon50

• 16.5 Avg MPG

• Sierra

  2005 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Nov 2017 • 269 Fuel-ups

  Property of hybridz31

• 13.3 Avg MPG

• Black Beauty

  2005 GMC Sierra 1500 Denali 6.0L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Sep 2022 • 12 Fuel-ups

  Property of rjnelson3

• 13.2 Avg MPG

• GMC Sierra 1500

  2005 GMC Sierra 1500 WT 4.3L V6 GAS Manual 5 Speed Standard Cab Pickup
  Added May 2022 • 37 Fuel-ups

  Property of acjet88

• 16.8 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added May 2018 • 302 Fuel-ups

  Property of Glockskie

• 14.4 Avg MPG

• 2005 Sierra

  2005 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Feb 2019 • 65 Fuel-ups

  Property of jkgoodman

• 15.2 Avg MPG

• GMC

  2005 GMC Sierra 1500 WT 5.3L V8 GAS Automatic 4 Speed Standard Cab Pickup
  Added Sep 2022 • 10 Fuel-ups

  Property of Symnsez

• 17.0 Avg MPG

• 05 GMC Sierra Denali

  2005 GMC Sierra 1500 Denali 6.0L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Jan 2020 • 35 Fuel-ups

  Property of igpoobah

• 13.3 Avg MPG

• My Sierra 1500

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

  Property of bud77

• 23.5 Avg MPG

• GMC Truck

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Jun 2017 • 117 Fuel-ups

  Property of dspatzier

• 16.8 Avg MPG

• 2005 Sierra

  2005 GMC Sierra 1500 SLE 4.8L V8 GAS Automatic 4 Speed
  Added Feb 2023 • 328 Fuel-ups

  Property of hkfuey

• 17.7 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
  Added Jun 2021 • 15 Fuel-ups

  Property of jmia

• 13.2 Avg MPG

• My Sierra 1500

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Jun 2021 • 46 Fuel-ups

  Property of Stalnaker2_0

• 14.2 Avg MPG

• Jen Truck

  2005 GMC Sierra 1500 SLE 5.3L V8 GAS
  Added Feb 2019 • 258 Fuel-ups

  Property of jenhaz18

• 17.2 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

• 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

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