fuel mileage

5

Asked by Mar 14, 2010 at 12:24 AM about the 2003 GMC Sierra 1500

Question type: Car Customization

so, im trying to get as much fuel mileage of out my truck as possible. its a '03 4x4 extended cab with 3.73 front and rear gears, k&n cold air intake and cherry bomb exhaust. i've got 285/50/r20 nitto dune grapplers on it. i'm getting about 15mpg on the highway. any suggestions?

2 Answers

9,360

Switch to a smaller street only tire, change your gears, use a synthetic oil, keep the right tire pressure, get rid of dead weight, run tonneau cover, and buy a programmer.

500

be happy with 15 thats good.

Your Answer

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,400
  • #2
    John Saffrahn
    Reputation
    3,740
  • #3
    Glenn Clingenpeel
    Reputation
    3,430
View All

Related Models For Sale

Used Chevrolet Silverado 1500
2,264 Great Deals out of 168,222 listings starting at $1,000
Used Ford F-150
2,567 Great Deals out of 195,338 listings starting at $1,300
Used GMC Sierra 2500HD
97 Great Deals out of 13,844 listings starting at $2,999
Used Toyota Tundra
461 Great Deals out of 33,419 listings starting at $2,000
Used Dodge Ram 1500
358 Great Deals out of 10,824 listings starting at $1,500
Used Chevrolet Silverado 2500HD
332 Great Deals out of 30,020 listings starting at $3,500
Used Toyota Tacoma
570 Great Deals out of 44,300 listings starting at $2,200
Used GMC Yukon
463 Great Deals out of 22,338 listings starting at $1,995
Used Ford F-250 Super Duty
312 Great Deals out of 45,312 listings starting at $1,700
Used Chevrolet Tahoe
718 Great Deals out of 41,409 listings starting at $1,995
Used Chevrolet Camaro
432 Great Deals out of 30,717 listings starting at $2,495
Used Chevrolet Colorado
266 Great Deals out of 33,981 listings starting at $1,900
Used Ford Mustang
589 Great Deals out of 36,206 listings starting at $1,200

Used Cars For Sale

2017 GMC Sierra 1500 For Sale
80 Great Deals out of 22,847 listings starting at $23,378
2016 GMC Sierra 1500 For Sale
138 Great Deals out of 4,063 listings starting at $16,990
2015 GMC Sierra 1500 For Sale
169 Great Deals out of 5,215 listings starting at $16,900
2014 GMC Sierra 1500 For Sale
164 Great Deals out of 5,020 listings starting at $13,750
2013 GMC Sierra 1500 For Sale
78 Great Deals out of 2,134 listings starting at $8,450

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.