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Hummer H3 For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.

Fuel Cap Issues

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Old Feb 17, 2019 | 08:28 PM
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Jeje Ali's Avatar
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Default Fuel Cap Issues
I’m sure I’m not the only one that has the “tighten fuel cap” pop up. What’s the best way to fix it?
 
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Old Feb 18, 2019 | 01:50 PM
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Hbrezzi's Avatar
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Originally Posted by Jeje Ali
I’m sure I’m not the only one that has the “tighten fuel cap” pop up. What’s the best way to fix it?
I would check the seal of the cap and make sure it clicks 3 times when tightening it.

My issue was while pumping gas and I solved it by changing the vent solenoid and the charcoal canister.

I also replaced the whole cap which was quite inexpensive.
 
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Old Feb 27, 2019 | 09:47 AM
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ronk5865's Avatar
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Default Fuel cap issue
Originally Posted by Jeje Ali
I’m sure I’m not the only one that has the “tighten fuel cap” pop up. What’s the best way to fix it?
I found that it was the fuel pump outlet nipple on top of the tank had a pin hole leak, bad design that just lets dirt settle on this little baby.
 
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