Based on data from 92 vehicles, 6,968 fuel-ups and 1,807,881 miles of driving, the 2009 GMC Sierra 1500 gets a combined Avg MPG of 14.59 with a 0.08 MPG margin of error.

Any Engine Type 4.3L V6 GAS (2) 4.8L V8 GAS (15) 5.3L V8 FLEX (25) 5.3L V8 GAS (22) 6.0L V8 ELECTRIC/GAS (3) 6.0L V8 GAS (2) 6.2L V8 FLEX (3) GAS (1) V8 FLEX (6) V8 GAS (9) Any Body Style Standard Cab Pickup (2) Extended Cab Pickup (10) Crew Cab Pickup (9) Extended Crew Cab Pickup (1) Cab & Chassis - Crew Cab (1) Any Submodel Hybrid (3) Denali (3) SL (4) WT (12) SLT (15) SLE (36) Other (19)

Below you can see a distribution of the fuel-ups with 99 outliers (1.40%) removed.

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

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• Lou's car

  2009 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 6 Speed
  Added Mar 2017 • 20 Fuel-ups

  Property of LouieT

• 20.6 Avg MPG

• My Sierra 1500

  2009 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Sep 2016 • 11 Fuel-ups

  Property of dadstruck

• 18.0 Avg MPG

• Big Blue

  2009 GMC Sierra 1500 SLT 5.3L GAS V8 Automatic 4 Extended Cab Pickup (4 Door)
  Added Apr 2015 • 7 Fuel-ups

  Property of S1lentSymph0ny

• 17.5 Avg MPG

• Sierra

  2009 GMC Sierra 1500 Texas Edition V8 GAS
  Added Aug 2017 • 92 Fuel-ups

  Property of txtinman

• 17.2 Avg MPG

• Guzzler

  2009 GMC Sierra 1500 SLE 4.8L V8 GAS Automatic Extended Cab Pickup
  Added Feb 2016 • 10 Fuel-ups

  Property of wattsco

• 15.2 Avg MPG

• My Sierra 1500

  2009 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Jan 2016 • 8 Fuel-ups

  Property of jayrobertson7

• 15.0 Avg MPG

• My Sierra 1500

  2009 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Speed
  Added Oct 2015 • 14 Fuel-ups

  Property of huntersdaddy1230

• 12.8 Avg MPG

• my truck

  2009 GMC Sierra 1500 FLEX V8
  Added Jul 2013 • 36 Fuel-ups

  Property of gdodge

• 15.9 Avg MPG

• Sierra

  2009 GMC Sierra 1500 SLT 5.3L V8 FLEX Automatic 4 Extended Cab Pickup (4 Door)
  Added Jun 2015 • 16 Fuel-ups

  Property of 05retro

• 14.4 Avg MPG

• 2009 Sierra

  2009 GMC Sierra 1500 SLE 5.3L V8 FLEX Automatic 6 Crew Cab Pickup (4 Door)
  Added Aug 2015 • 3 Fuel-ups

  Property of shield1561

• 12.5 Avg MPG

• Darren's Sierra

  2009 GMC Sierra 1500 GAS V8
  Added Sep 2012 • 78 Fuel-ups

  Property of darren700

• 12.3 Avg MPG

• truck

  2009 GMC Sierra 1500 SLE 5.3L GAS V8 Automatic 4 Extended Cab Pickup (4 Door)
  Added Nov 2014 • 14 Fuel-ups

  Property of bbnight3

• 14.5 Avg MPG

• 09 GMC Sierra 1500

  2009 GMC Sierra 1500 GAS V8
  Added Feb 2014 • 23 Fuel-ups

  Property of HoofPros

• 13.7 Avg MPG

• 2009 GMC Sierra 1500

  2009 GMC Sierra 1500 SL 4.8L V8 GAS Automatic 4 Speed
  Added Jun 2014 • 22 Fuel-ups

  Property of hemigoat2003

• 13.6 Avg MPG

• 2009 GMC SIERRA

  2009 GMC Sierra 1500 SLE 4.8L V8 GAS Automatic 4
  Added Jun 2014 • 4 Fuel-ups

  Property of Audicted

• 16.9 Avg MPG

• La mula negra

  2009 GMC Sierra 1500 GAS V8
  Added Feb 2014 • 18 Fuel-ups

  Property of Pabs

• 16.3 Avg MPG

• Big Red

  2009 GMC Sierra 1500
  Added Apr 2014 • 6 Fuel-ups

  Property of LngDrv

• 15.8 Avg MPG

• Blue

  2009 GMC Sierra 1500 GAS
  Added Apr 2013 • 58 Fuel-ups

  Property of JustGot1Thumb

• 14.3 Avg MPG

• Ryan's Sierra

  2009 GMC Sierra 1500 FLEX V8
  Added Jan 2014 • 7 Fuel-ups

  Property of Rangel59CTD

• 15.6 Avg MPG

• GMC

  2009 GMC Sierra 1500 GAS V8
  Added Apr 2013 • 21 Fuel-ups

  Property of lariv

• 15.8 Avg MPG

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