Based on data from 92 vehicles, 4,808 fuel-ups and 1,369,054 miles of driving, the 2004 GMC Sierra 1500 gets a combined Avg MPG of 14.13 with a 0.08 MPG margin of error.

Any Engine Type 4.3L V6 GAS (10) 4.8L V8 GAS (5) 5.3L V8 FLEX (4) 5.3L V8 GAS (53) 6.0L V8 GAS (4) GAS (1) V6 GAS (1) V8 GAS (10) Any Body Style Standard Cab Pickup (2) Extended Cab Pickup (16) Crew Cab Pickup (3) Extended Crew Cab Pickup (2) Any Submodel WT (3) Denali (4) Base (10) SLT (19) SLE (42) Other (14)

Below you can see a distribution of the fuel-ups with 209 outliers (4.17%) removed.

Following shows the average MPG of each of the 92 vehicles in the system.

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• My Sierra 1500

  2004 GMC Sierra 1500 SLT 4.3L V6 GAS Automatic 4 Speed
  Added Jan 2018 • 99 Fuel-ups

  Property of nunnally

• 13.6 Avg MPG

• Earl

  2004 GMC Sierra 1500 5.3L V8 FLEX Automatic 4 Speed Extended Cab Pickup
  Added Mar 2023 • 60 Fuel-ups

  Property of 5_Slow

• 12.9 Avg MPG

• 2004 GMC Sierra 1500

  2004 GMC Sierra 1500 WT 4.8L V8 GAS Automatic 4 Speed
  Added Apr 2019 • 49 Fuel-ups

  Property of michaelj20

• 11.8 Avg MPG

• My Sierra 1500

  2004 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Sep 2018 • 192 Fuel-ups

  Property of joe___hill

• 12.9 Avg MPG

• My Sierra 1500

  2004 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Apr 2022 • 136 Fuel-ups

  Property of Spitfire77

• 15.4 Avg MPG

• GMC (9%)

  2004 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Apr 2024 • 83 Fuel-ups

  Property of kmac0694

• 13.2 Avg MPG

• My Sierra 1500

  2004 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Apr 2018 • 79 Fuel-ups

  Property of xayoz

• 13.0 Avg MPG

• Dallas

  2004 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed Extended Cab Pickup
  Added Jun 2019 • 197 Fuel-ups

  Property of techteacher34

• 16.4 Avg MPG

• Sierra 1500

  2004 GMC Sierra 1500 5.3L V8 GAS Automatic 4 Speed
  Added Sep 2021 • 80 Fuel-ups

  Property of Twise

• 14.8 Avg MPG

• Krusty

  2004 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added May 2023 • 60 Fuel-ups

  Property of scwerm

• 15.3 Avg MPG

• My Sierra 1500

  2004 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
  Added Mar 2024 • 28 Fuel-ups

  Property of mikecrone

• 11.2 Avg MPG

• Truckie Sr.

  2004 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Dec 2023 • 4 Fuel-ups

  Property of fussy_mochi

• 11.3 Avg MPG

• Sierra Winch Truck

  2004 GMC Sierra 1500 4.3L V6 GAS Automatic 4 Speed Standard Cab Pickup
  Added Aug 2023 • 21 Fuel-ups

  Property of jtpick

• 4.7 Avg MPG

• GMC

  2004 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 4 Speed Extended Cab Pickup
  Added Dec 2020 • 53 Fuel-ups

  Property of offroad

• 16.3 Avg MPG

• Big Red

  2004 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Sep 2016 • 97 Fuel-ups

  Property of Tibbs

• 12.8 Avg MPG

• E-B Hauler

  2004 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added May 2019 • 56 Fuel-ups

  Property of Homeden2

• 14.0 Avg MPG

• GMC

  2004 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Feb 2023 • 22 Fuel-ups

  Property of 03zf6

• 13.6 Avg MPG

• My Sierra 1500

  2004 GMC Sierra 1500 5.3L V8 GAS Automatic 4 Speed
  Added Apr 2021 • 144 Fuel-ups

  Property of BryceW34

• 12.3 Avg MPG

• 2004 GMC 1500

  2004 GMC Sierra 1500 4.3L V6 GAS Manual 5 Speed
  Added Sep 2021 • 51 Fuel-ups

  Property of racerx146

• 16.0 Avg MPG

• GMC Sierra 1500 4.3 V6

  2004 GMC Sierra 1500 4.3L V6 GAS Automatic 4 Speed
  Added Mar 2023 • 8 Fuel-ups

  Property of mrhank

• 14.3 Avg MPG

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