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Home
Hummer
H2
Engine
Symptoms
Poor Mileage
2003 HUMMER H2
12,800 MILES
DAVID7734
MEMBER
2 POSTS
FOLLOW
I just bought a 2003 h2 I know they have horrible mpg anyway, but is there anything I can do myself to improve the mpg in any way?
Mar 23, 2013 at 1:16 AM
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JACOBANDNICKOLAS
CERTIFIED EXPERT
110,175 POSTS
About the only thing you can try is to make sure the air filter is clean and check it for a tune up.
Mar 23, 2013 at 2:00 AM
DAVID7734
MEMBER
2 POSTS
Ok thank you. Is there anything after market I can put on it that might help?
Mar 23, 2013 at 2:44 PM
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