Based on data from 92 vehicles, 4,610 fuel-ups and 1,319,607 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 (6) 5.3L V8 FLEX (4) 5.3L V8 GAS (53) 6.0L V8 GAS (3) GAS (1) V6 GAS (1) V8 GAS (10) Any Body Style Standard Cab Pickup (2) Extended Cab Pickup (15) Crew Cab Pickup (3) Extended Crew Cab Pickup (2) Any Submodel WT (3) Denali (3) Base (10) SLT (19) SLE (43) Other (14)

Below you can see a distribution of the fuel-ups with 201 outliers (4.18%) removed.

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

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• 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

• ‘04 Sierra Z71 SLE

  2004 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Jun 2020 • 6 Fuel-ups

  Property of Bama2u

• 11.5 Avg MPG

• Z71

  2004 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 4 Speed Crew Cab Pickup
  Added Feb 2019 • 200 Fuel-ups

  Property of Judsonm28

• 13.3 Avg MPG

• Old Truck

  2004 GMC Sierra 1500 SLT
  Added May 2018 • 109 Fuel-ups

  Property of offroad

• 14.8 Avg MPG

• Jeff's Truck

  2004 GMC Sierra 1500 Denali 6.0L V8 GAS Automatic 4 Speed Extended Cab Pickup
  Added Oct 2017 • 16 Fuel-ups

  Property of wade429

• 17.2 Avg MPG

• Sierra

  2004 GMC Sierra 1500 SLE 5.3L GAS V8 Automatic 4
  Added May 2015 • 10 Fuel-ups

  Property of Rednick

• 13.3 Avg MPG

• My Sierra 1500

  2004 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
  Added Jun 2022 • 11 Fuel-ups

  Property of ttompke

• 13.2 Avg MPG

• My Sierra 1500

  2004 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Dec 2021 • 10 Fuel-ups

  Property of e_kohr2001

• 11.2 Avg MPG

• 1500 crew cab

  2004 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed Extended Crew Cab Pickup
  Added Sep 2012 • 147 Fuel-ups

  Property of tinagreen5

• 17.2 Avg MPG

• 2004 Sierra

  2004 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed Standard Cab Pickup
  Added Aug 2020 • 4 Fuel-ups

  Property of steinkebunch

• 12.5 Avg MPG

• My Sierra 1500

  2004 GMC Sierra 1500 SLT 4.8L V8 GAS Automatic 4 Speed
  Added Dec 2016 • 135 Fuel-ups

  Property of rkbrown04

• 16.8 Avg MPG

• My Sierra 1500

  2004 GMC Sierra 1500 Denali 6.0L V8 GAS Automatic 4 Speed
  Added Feb 2018 • 29 Fuel-ups

  Property of taggit

• 11.4 Avg MPG

• Fatboy

  2004 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Mar 2017 • 318 Fuel-ups

  Property of fatboyz

• 11.5 Avg MPG

• Blue Truck

  2004 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed Extended Cab Pickup
  Added Oct 2017 • 85 Fuel-ups

  Property of techteacher34

• 15.7 Avg MPG

• My Sierra 1500

  2004 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Oct 2020 • 3 Fuel-ups

  Property of 04_Sierra_1500

• 5.7 Avg MPG

• Sierra

  2004 GMC Sierra 1500 SLE 5.3L V8 GAS
  Added Oct 2018 • 67 Fuel-ups

  Property of dsaint94

• 15.3 Avg MPG

• My Sierra 1500

  2004 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Jun 2020 • 7 Fuel-ups

  Property of georgesei

• 14.0 Avg MPG

• My Sierra 1500

  2004 GMC Sierra 1500 4.3L V6 GAS Automatic 4 Speed
  Added Mar 2020 • 11 Fuel-ups

  Property of megatron1775

• 15.0 Avg MPG

• Old Faithful

  2004 GMC Sierra 1500 SLE 4.3L V6 GAS Automatic 4 Speed
  Added Feb 2019 • 51 Fuel-ups

  Property of CannedGrapes

• 14.8 Avg MPG

• Sierra

  2004 GMC Sierra 1500 SLE 5.3L V8 GAS Automatic 4 Speed
  Added Feb 2018 • 129 Fuel-ups

  Property of jmat

• 14.3 Avg MPG

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