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GMC Sierra Gas Mileage

Like the full-size Chevrolet Silverado pickup, but want something a little different? Take a look at the Sierra, GMC’s stable mate for the Silverado. The half-ton GMC Sierra 1500 offers respectable gas mileage for a full size pickup when fitted with the base 4.6 liter six cylinder engine. When coupled with a five-speed manual transmission in a 2WD Sierra, the 4.6 liter six provides 15 city and 20 highway miles per gallon.

GMC Canyon Engine Options
GMC offers a wide range of engine options in the half-ton Sierra 1500 range. Although GMC offers diesel engine options for the heavy-duty Sierra 2500HD and 3500HD, the Sierra 1500 choices are gas-only.

  • Vortec 4.3 liter V6
  • Vortec 4.8 liter V8
  • Vortec 5.3 liter V8 (iron-block, Active Fuel Management, with or without FlexFuel)
  • Vortec 5.3 liter V8 (aluminum-block, Active Fuel Management, with or without FlexFuel)
  • Vortec MAX 6.0 liter V8 (Active Fuel Management)

The 2500HD and 3500HD come standard with the Vortec 6.0 liter V8, with the Duramax Diesel 6.6 liter turbo V8 available as an option. GMC does not publish mileage ratings for the Duramax diesels, which are produced by a joint venture between GM and Isuzu.



GMC Sierra Gas Mileage – 1995-2010

Year Manf. Model Engine Disp. Fuel Trans. City Hwy
2010 GMC C15 SIERRA 2WD 6 cylinder 4.3 liter R (A4) Auto 15 20
2010 GMC C15 SIERRA 2WD 8 cylinder 5.3 liter R (A6) Auto 15 21
2010 GMC C15 SIERRA 2WD 8 cylinder 6.2 liter R (A6) Auto 13 19
2010 GMC C15 SIERRA 2WD 8 cylinder 4.8 liter R (A4) Auto 14 19
2010 GMC C15 SIERRA 2WD HYBRID 8 cylinder 6.0 liter R (AV) Auto 21 22
2010 GMC C15 SIERRA 2WD XFE 8 cylinder 5.3 liter R (A6) Auto 15 22
2010 GMC K15 SIERRA 4WD 8 cylinder 4.8 liter R (A4) Auto 13 18
2010 GMC K15 SIERRA 4WD 8 cylinder 5.3 liter R (A6) Auto 15 21
2010 GMC K15 SIERRA 4WD 8 cylinder 6.2 liter R (A6) Auto 12 19
2010 GMC K15 SIERRA 4WD 6 cylinder 4.3 liter R (A4) Auto 14 18
2010 GMC K15 SIERRA 4WD HYBRID 8 cylinder 6.0 liter R (AV) Auto 21 22
2010 GMC K15 SIERRA AWD 8 cylinder 6.2 liter R (A6) Auto 12 19
2009 GMC C15 SIERRA 2WD 8 cylinder 4.8 liter R (L4) Auto 14 19
2009 GMC C15 SIERRA 2WD 8 cylinder 5.3 liter E (L4) Auto 11 15
2009 GMC C15 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 14 20
2009 GMC C15 SIERRA 2WD 8 cylinder 5.3 liter E (L6) Auto 10 15
2009 GMC C15 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 14 20
2009 GMC C15 SIERRA 2WD 8 cylinder 5.3 liter R (L6) Auto 14 20
2009 GMC C15 SIERRA 2WD 8 cylinder 6.0 liter R (L6) Auto 14 19
2009 GMC C15 SIERRA 2WD 8 cylinder 6.2 liter E (L6) Auto 10 14
2009 GMC C15 SIERRA 2WD 8 cylinder 6.2 liter R (L6) Auto 13 19
2009 GMC C15 SIERRA 2WD 8 cylinder 5.3 liter R (L6) Auto 14 20
2009 GMC C15 SIERRA 2WD 6 cylinder 4.3 liter R (L4) Auto 15 20
2009 GMC C15 SIERRA 2WD HYBRID 8 cylinder 6.0 liter R (AV) Auto 21 22
2009 GMC C15 SIERRA XFE 2WD 8 cylinder 5.3 liter R (L6) Auto 15 21
2009 GMC C15 SIERRA XFE 2WD 8 cylinder 5.3 liter E (L6) Auto 11 16
2009 GMC K15 SIERRA 4WD 8 cylinder 5.3 liter E (L6) Auto 10 15
2009 GMC K15 SIERRA 4WD 8 cylinder 6.2 liter E (L6) Auto 9 14
2009 GMC K15 SIERRA 4WD 8 cylinder 4.8 liter R (L4) Auto 14 18
2009 GMC K15 SIERRA 4WD 8 cylinder 5.3 liter R (L6) Auto 14 20
2009 GMC K15 SIERRA 4WD 8 cylinder 5.3 liter R (L4) Auto 14 19
2009 GMC K15 SIERRA 4WD 8 cylinder 5.3 liter R (L4) Auto 14 19
2009 GMC K15 SIERRA 4WD 6 cylinder 4.3 liter R (L4) Auto 14 18
2009 GMC K15 SIERRA 4WD 8 cylinder 5.3 liter R (L6) Auto 14 20
2009 GMC K15 SIERRA 4WD 8 cylinder 5.3 liter E (L4) Auto 10 14
2009 GMC K15 SIERRA 4WD 8 cylinder 6.2 liter R (L6) Auto 12 19
2009 GMC K15 SIERRA 4WD 8 cylinder 6.0 liter R (L6) Auto 13 18
2009 GMC K15 SIERRA 4WD HYBRID 8 cylinder 6.0 liter R (AV) Auto 20 20
2009 GMC K15 SIERRA AWD 8 cylinder 6.2 liter R (L6) Auto 12 19
2009 GMC K15 SIERRA AWD 8 cylinder 6.2 liter E (L6) Auto 9 14
2008 GMC C15 SIERRA 2WD 8 cylinder 4.8 liter R (L4) Auto 14 19
2008 GMC C15 SIERRA 2WD 8 cylinder 5.3 liter E (L4) Auto 11 15
2008 GMC C15 SIERRA 2WD 8 cylinder 6.2 liter P (L6) Auto 12 19
2008 GMC C15 SIERRA 2WD 8 cylinder 6.0 liter R (L4) Auto 13 18
2008 GMC C15 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 15 20
2008 GMC C15 SIERRA 2WD 6 cylinder 4.3 liter R (L4) Auto 15 20
2008 GMC C15 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 15 20
2008 GMC K15 SIERRA 4WD 8 cylinder 5.3 liter E (L4) Auto 11 14
2008 GMC K15 SIERRA 4WD 8 cylinder 6.0 liter R (L4) Auto 13 17
2008 GMC K15 SIERRA 4WD 8 cylinder 4.8 liter R (L4) Auto 14 18
2008 GMC K15 SIERRA 4WD 6 cylinder 4.3 liter R (L4) Auto 14 18
2008 GMC K15 SIERRA 4WD 8 cylinder 5.3 liter R (L4) Auto 14 19
2008 GMC K15 SIERRA 4WD 8 cylinder 5.3 liter R (L4) Auto 14 19
2008 GMC K15 SIERRA AWD 8 cylinder 6.2 liter P (L6) Auto 12 18
2007 GMC C15 SIERRA 2WD 8 cylinder 5.3 liter E (L4) Auto 12 16
2007 GMC C15 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 16 21
2007 GMC C15 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 16 22
2007 GMC C15 SIERRA 2WD 8 cylinder 4.8 liter R (L4) Auto 16 20
2007 GMC C15 SIERRA 2WD 8 cylinder 6.0 liter R (L4) Auto 15 19
2007 GMC C15 SIERRA 2WD 8 cylinder 6.2 liter P (L6) Auto 14 20
2007 GMC C15 SIERRA 2WD 6 cylinder 4.3 liter R (L4) Auto 17 21
2007 GMC C1500 SIERRA CLASSIC 2WD 6 cylinder 4.3 liter R (L4) Auto 16 21
2007 GMC C1500 SIERRA CLASSIC 2WD 8 cylinder 5.3 liter E (L4) Auto 12 16
2007 GMC C1500 SIERRA CLASSIC 2WD 6 cylinder 4.3 liter R (M5) Manual 16 23
2007 GMC C1500 SIERRA CLASSIC 2WD 8 cylinder 5.3 liter R (L4) Auto 16 21
2007 GMC C1500 SIERRA CLASSIC 2WD 8 cylinder 6.0 liter P (L4) Auto 14 19
2007 GMC C1500 SIERRA CLASSIC 2WD 8 cylinder 5.3 liter R (L4) Auto 16 21
2007 GMC C1500 SIERRA CLASSIC 2WD 8 cylinder 4.8 liter R (L4) Auto 16 21
2007 GMC C15SIERRACLASSICHYBRID 2WD 8 cylinder 5.3 liter R (L4) Auto 18 21
2007 GMC K15 SIERRA 4WD 8 cylinder 4.8 liter R (L4) Auto 15 19
2007 GMC K15 SIERRA 4WD 6 cylinder 4.3 liter R (L4) Auto 16 19
2007 GMC K15 SIERRA 4WD 8 cylinder 6.0 liter R (L4) Auto 15 19
2007 GMC K15 SIERRA 4WD 8 cylinder 5.3 liter R (L4) Auto 16 20
2007 GMC K15 SIERRA 4WD 8 cylinder 5.3 liter E (L4) Auto 12 15
2007 GMC K15 SIERRA 4WD 8 cylinder 5.3 liter R (L4) Auto 16 20
2007 GMC K15 SIERRA AWD 8 cylinder 6.2 liter P (L6) Auto 13 19
2007 GMC K1500 SIERRA CLASSIC 4WD 8 cylinder 6.0 liter P (L4) Auto 14 17
2007 GMC K1500 SIERRA CLASSIC 4WD 8 cylinder 5.3 liter E (L4) Auto 11 14
2007 GMC K1500 SIERRA CLASSIC 4WD 8 cylinder 5.3 liter R (L4) Auto 15 19
2007 GMC K1500 SIERRA CLASSIC 4WD 8 cylinder 4.8 liter R (L4) Auto 15 19
2007 GMC K1500 SIERRA CLASSIC 4WD 6 cylinder 4.3 liter R (M5) Manual 15 20
2007 GMC K1500 SIERRA CLASSIC 4WD 6 cylinder 4.3 liter R (L4) Auto 15 18
2007 GMC K1500 SIERRA CLASSIC 4WD 8 cylinder 5.3 liter R (L4) Auto 15 19
2007 GMC K1500 SIERRA CLASSIC AWD 8 cylinder 6.0 liter P (L4) Auto 14 17
2007 GMC K15SIERRACLASSICHYBRID4WD 8 cylinder 5.3 liter R (L4) Auto 17 19
2006 GMC C15 SIERRA HYBRID 2WD 8 cylinder 5.3 liter R (L4) Auto 18 21
2006 GMC C1500 SIERRA 2WD 8 cylinder 4.8 liter R (L4) Auto 16 21
2006 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (L4) Auto 16 21
2006 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (M5) Manual 16 22
2006 GMC C1500 SIERRA 2WD 8 cylinder 4.8 liter R (M5) Manual 16 21
2006 GMC C1500 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 16 20
2006 GMC C1500 SIERRA 2WD 8 cylinder 5.3 liter E (L4) Auto 12 16
2006 GMC C1500 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 16 20
2006 GMC C1500 SIERRA 2WD 8 cylinder 6.0 liter P (L4) Auto 14 19
2006 GMC K15 SIERRA HYBRID 4WD 8 cylinder 5.3 liter R (L4) Auto 17 19
2006 GMC K1500 SIERRA 4WD 8 cylinder 5.3 liter E (L4) Auto 11 14
2006 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (L4) Auto 15 18
2006 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (M5) Manual 15 20
2006 GMC K1500 SIERRA 4WD 8 cylinder 4.8 liter R (L4) Auto 15 19
2006 GMC K1500 SIERRA 4WD 8 cylinder 4.8 liter R (M5) Manual 15 19
2006 GMC K1500 SIERRA 4WD 8 cylinder 5.3 liter R (L4) Auto 15 19
2006 GMC K1500 SIERRA 4WD 8 cylinder 5.3 liter R (L4) Auto 15 19
2006 GMC K1500 SIERRA 4WD 8 cylinder 6.0 liter P (L4) Auto 14 17
2006 GMC K1500 SIERRA AWD 8 cylinder 6.0 liter P (L4) Auto 13 17
2005 GMC C15 SIERRA HYBRID 2WD 8 cylinder 5.3 liter R (L4) Auto 18 21
2005 GMC C1500 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 16 20
2005 GMC C1500 SIERRA 2WD 8 cylinder 6.0 liter P (L4) Auto 14 19
2005 GMC C1500 SIERRA 2WD 8 cylinder 4.8 liter R (M5) Manual 16 21
2005 GMC C1500 SIERRA 2WD 8 cylinder 4.8 liter R (L4) Auto 16 21
2005 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (L4) Auto 16 21
2005 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (M5) Manual 16 22
2005 GMC C2500 HD SIERRA 2WD 8 cylinder 6.0 liter C (L4) Auto 9 12
2005 GMC K15 SIERRA HYBRID 4WD 8 cylinder 5.3 liter R (L4) Auto 17 19
2005 GMC K1500 SIERRA 4WD 8 cylinder 5.3 liter R (L4) Auto 15 19
2005 GMC K1500 SIERRA 4WD 8 cylinder 4.8 liter R (M5) Manual 15 19
2005 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (M5) Manual 15 20
2005 GMC K1500 SIERRA 4WD 8 cylinder 4.8 liter R (L4) Auto 16 19
2005 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (L4) Auto 15 18
2005 GMC K1500 SIERRA AWD 8 cylinder 6.0 liter R (L4) Auto 14 16
2005 GMC K2500 HD SIERRA 4WD 8 cylinder 6.0 liter C (L4) Auto 9 12
2004 GMC C15 SIERRA HYBRID 2WD 8 cylinder 5.3 liter R (L4) Auto 18 20
2004 GMC C1500 SIERRA 2WD 8 cylinder 4.8 liter R (M5) Manual 15 20
2004 GMC C1500 SIERRA 2WD 8 cylinder 5.3 liter E (L4) Auto 11 14
2004 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (L4) Auto 16 20
2004 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (M5) Manual 15 21
2004 GMC C1500 SIERRA 2WD 8 cylinder 4.8 liter R (L4) Auto 17 20
2004 GMC C1500 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 16 19
2004 GMC C1500 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 15 19
2004 GMC C1500 SIERRA 2WD 8 cylinder 6.0 liter R (L4) Auto 14 18
2004 GMC K15 SIERRA HYBRID 4WD 8 cylinder 5.3 liter R (L4) Auto 17 19
2004 GMC K1500 SIERRA 4WD 8 cylinder 5.3 liter R (L4) Auto 15 18
2004 GMC K1500 SIERRA 4WD 8 cylinder 5.3 liter E (L4) Auto 10 13
2004 GMC K1500 SIERRA 4WD 8 cylinder 5.3 liter R (L4) Auto 14 17
2004 GMC K1500 SIERRA 4WD 8 cylinder 4.8 liter R (M5) Manual 14 18
2004 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (M5) Manual 14 18
2004 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (L4) Auto 14 18
2004 GMC K1500 SIERRA 4WD 8 cylinder 4.8 liter R (L4) Auto 15 18
2004 GMC K1500 SIERRA AWD 8 cylinder 6.0 liter R (L4) Auto 13 17
2003 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (M5) Manual 15 21
2003 GMC C1500 SIERRA 2WD 8 cylinder 5.3 liter E (L4) Auto 11 14
2003 GMC C1500 SIERRA 2WD 8 cylinder 4.8 liter R (M5) Manual 16 20
2003 GMC C1500 SIERRA 2WD 8 cylinder 4.8 liter R (L4) Auto 15 19
2003 GMC C1500 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 15 19
2003 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (L4) Auto 16 20
2003 GMC C1500 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 15 19
2003 GMC K1500 SIERRA 4WD 8 cylinder 4.8 liter R (M5) Manual 14 18
2003 GMC K1500 SIERRA 4WD 8 cylinder 5.3 liter R (L4) Auto 13 17
2003 GMC K1500 SIERRA 4WD 8 cylinder 5.3 liter R (L4) Auto 14 18
2003 GMC K1500 SIERRA 4WD 8 cylinder 5.3 liter E (L4) Auto 10 12
2003 GMC K1500 SIERRA 4WD 8 cylinder 4.8 liter R (L4) Auto 14 18
2003 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (L4) Auto 15 18
2003 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (M5) Manual 14 18
2003 GMC K1500 SIERRA DENALI AWD 8 cylinder 6.0 liter R (L4) Auto 12 16
2002 GMC C1500 SIERRA 2WD 8 cylinder 4.8 liter R (M5) Manual 16 20
2002 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (L4) Auto 15 20
2002 GMC C1500 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 15 19
2002 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (M5) Manual 16 21
2002 GMC C1500 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 15 19
2002 GMC C1500 SIERRA 2WD 8 cylinder 4.8 liter R (L4) Auto 15 20
2002 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (L4) Auto 15 18
2002 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (M5) Manual 14 17
2002 GMC K1500 SIERRA 4WD 8 cylinder 4.8 liter R (L4) Auto 14 17
2002 GMC K1500 SIERRA 4WD 8 cylinder 5.3 liter R (L4) Auto 14 17
2002 GMC K1500 SIERRA 4WD 8 cylinder 5.3 liter R (L4) Auto 14 17
2002 GMC K1500 SIERRA 4WD 8 cylinder 4.8 liter R (M5) Manual 14 17
2002 GMC K1500 SIERRA DENALI AWD 8 cylinder 6.0 liter R (L4) Auto 12 15
2001 GMC C1500 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 15 19
2001 GMC C1500 SIERRA 2WD 8 cylinder 4.8 liter R (L4) Auto 16 20
2001 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (M5) Manual 16 19
2001 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (L4) Auto 16 21
2001 GMC C1500 SIERRA 2WD 8 cylinder 4.8 liter R (M5) Manual 16 20
2001 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (M5) Manual 15 18
2001 GMC K1500 SIERRA 4WD 8 cylinder 6.0 liter R (L4) Auto 11 14
2001 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (L4) Auto 15 20
2001 GMC K1500 SIERRA 4WD 8 cylinder 4.8 liter R (L4) Auto 15 18
2001 GMC K1500 SIERRA 4WD 8 cylinder 4.8 liter R (M5) Manual 14 18
2001 GMC K1500 SIERRA 4WD 8 cylinder 5.3 liter R (L4) Auto 15 18
2000 GMC C1500 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 16 20
2000 GMC C1500 SIERRA 2WD 8 cylinder 4.8 liter R (L4) Auto 16 21
2000 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (M5) Manual 17 23
2000 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (L4) Auto 16 20
2000 GMC C1500 SIERRA 2WD 8 cylinder 4.8 liter R (M5) Manual 16 20
2000 GMC C2500 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 15 19
2000 GMC C2500 SIERRA 2WD 8 cylinder 6.0 liter R (L4) Auto 12 16
2000 GMC K1500 SIERRA 4WD 8 cylinder 5.3 liter R (L4) Auto 15 18
2000 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (L4) Auto 16 20
2000 GMC K1500 SIERRA 4WD 8 cylinder 4.8 liter R (M5) Manual 15 19
2000 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (M5) Manual 15 18
2000 GMC K1500 SIERRA 4WD 8 cylinder 4.8 liter R (L4) Auto 15 18
1999 GMC C1500 SIERRA 2WD 8 cylinder 5.7 liter R (L4) Auto 14 18
1999 GMC C1500 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 16 20
1999 GMC C1500 SIERRA 2WD 8 cylinder 5.0 liter R (L4) Auto 15 19
1999 GMC C1500 SIERRA 2WD 8 cylinder 4.8 liter R (M5) Manual 16 20
1999 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (L4) Auto 16 20
1999 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (M5) Manual 17 23
1999 GMC C1500 SIERRA 2WD 8 cylinder 4.8 liter R (L4) Auto 16 21
1999 GMC C2500 SIERRA 2WD 8 cylinder 6.0 liter R (L4) Auto 12 16
1999 GMC C2500 SIERRA 2WD 8 cylinder 5.3 liter R (L4) Auto 15 19
1999 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (M5) Manual 15 18
1999 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (L4) Auto 16 20
1999 GMC K1500 SIERRA 4WD 8 cylinder 4.8 liter R (M5) Manual 15 19
1999 GMC K1500 SIERRA 4WD 8 cylinder 5.0 liter R (L4) Auto 14 18
1999 GMC K1500 SIERRA 4WD 8 cylinder 4.8 liter R (L4) Auto 15 18
1999 GMC K1500 SIERRA 4WD 8 cylinder 5.7 liter R (L4) Auto 13 17
1999 GMC K1500 SIERRA 4WD 8 cylinder 5.3 liter R (L4) Auto 15 18
1998 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (L4) Auto 16 20
1998 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (M5) Manual 17 23
1998 GMC C1500 SIERRA 2WD 8 cylinder 5.0 liter R (M5) Manual 15 20
1998 GMC C1500 SIERRA 2WD 8 cylinder 5.0 liter R (L4) Auto 15 20
1998 GMC C1500 SIERRA 2WD 8 cylinder 5.7 liter R (M5) Manual 14 19
1998 GMC C1500 SIERRA 2WD 8 cylinder 5.7 liter R (L4) Auto 14 19
1998 GMC C2500 SIERRA 2WD 8 cylinder 6.5 liter D (L4) Auto 15 18
1998 GMC C2500 SIERRA 2WD 8 cylinder 5.7 liter R (L4) Auto 14 18
1998 GMC C2500 SIERRA 2WD 8 cylinder 5.7 liter R (M5) Manual 14 19
1998 GMC C2500 SIERRA 2WD 8 cylinder 5.0 liter R (M5) Manual 14 19
1998 GMC C2500 SIERRA 2WD 8 cylinder 5.0 liter R (L4) Auto 15 20
1998 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (L4) Auto 16 20
1998 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (M5) Manual 16 20
1998 GMC K1500 SIERRA 4WD 8 cylinder 5.0 liter R (L4) Auto 14 18
1998 GMC K1500 SIERRA 4WD 8 cylinder 5.0 liter R (M5) Manual 13 18
1998 GMC K1500 SIERRA 4WD 8 cylinder 5.7 liter R (L4) Auto 13 17
1998 GMC K1500 SIERRA 4WD 8 cylinder 5.7 liter R (M5) Manual 12 17
1998 GMC K1500 SIERRA 4WD 8 cylinder 6.5 liter D (L4) Auto 15 19
1997 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (L4) Auto 16 21
1997 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (M5) Manual 17 23
1997 GMC C1500 SIERRA 2WD 8 cylinder 5.0 liter R (L4) Auto 15 21
1997 GMC C1500 SIERRA 2WD 8 cylinder 5.0 liter R (M5) Manual 15 20
1997 GMC C1500 SIERRA 2WD 8 cylinder 5.7 liter R (L4) Auto 15 19
1997 GMC C1500 SIERRA 2WD 8 cylinder 5.7 liter R (M5) Manual 14 20
1997 GMC C2500 SIERRA 2WD 8 cylinder 5.7 liter R (M5) Manual 14 19
1997 GMC C2500 SIERRA 2WD 8 cylinder 6.5 liter D (L4) Auto 15 18
1997 GMC C2500 SIERRA 2WD 8 cylinder 5.7 liter R (L4) Auto 15 19
1997 GMC C2500 SIERRA 2WD 8 cylinder 5.0 liter R (L4) Auto 15 18
1997 GMC C2500 SIERRA 2WD 8 cylinder 5.0 liter R (M5) Manual 15 20
1997 GMC K1500 SIERRA 4WD 8 cylinder 6.5 liter D (L4) Auto 15 18
1997 GMC K1500 SIERRA 4WD 8 cylinder 5.7 liter R (M5) Manual 13 18
1997 GMC K1500 SIERRA 4WD 8 cylinder 5.7 liter R (L4) Auto 13 17
1997 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (M5) Manual 15 21
1997 GMC K1500 SIERRA 4WD 8 cylinder 5.0 liter R (M5) Manual 13 18
1997 GMC K1500 SIERRA 4WD 8 cylinder 5.0 liter R (L4) Auto 14 18
1997 GMC K1500 SIERRA 4WD 6 cylinder 4.3 liter R (L4) Auto 15 20
1996 GMC C1500 SIERRA 2WD 8 cylinder 5.0 liter R (L4) Auto 15 19
1996 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (M5) Manual 17 22
1996 GMC C1500 SIERRA 2WD 8 cylinder 5.7 liter R (L4) Auto 15 19
1996 GMC C1500 SIERRA 2WD 6 cylinder 4.3 liter R (L4) Auto 17 22
1996 GMC C1500 SIERRA 2WD 8 cylinder 6.5 liter D (L4) Auto 16 21
1996 GMC C1500 SIERRA 2WD 8 cylinder 5.7 liter R (M5) Manual 14 20
1996 GMC C1500 SIERRA 2WD 8 cylinder 5.0 liter R (M5) Manual 15 20
1996 GMC C2500 SIERRA 2WD 8 cylinder 5.7 liter R (L4) Auto 14 18
1996 GMC C2500 SIERRA 2WD 8 cylinder 6.5 liter D (L4) Auto 16 20

Note: the EPA tweaked their testing procedure, starting with the 2008 model year, with the end result being that the 2008 MPG estimates are now lower than previous years. As always, YMMV.

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1 comment so far ↓

#1 faye on 05.11.11 at 9:46 am

we bought a 2000 sle 1500 sierra, we seem to be putting alot of gas in about every 4-5 days, is there any suggestions for this great truck we have, we bought a bed cover, we use the fuel injected cleaners and high mileage gas treatments. we love our truck and it is in exceptional shape?

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