2001 Chevrolet Tahoe Q&A

2001 Chevrolet Tahoe Question: gas tank

i am having troubles with my gas tank getting sucked up in -
Answer 1
This sounds like the evaporative system vent may be plugged. I'm not sure where it is, but I would have someone look into that part of the fuel system. Make sure the charcoal canister is OK as well, these can come apart and plug up the evap system lines. -
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It just happened. Does this make the gas tank vulnerable to falling out?
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
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i want to know why my fuel light comes on when i have a full tank and my needle goes up and down as i drive and when i am at a stop or parked ?
How many miles should I get so I can judge it better.Quarter of a tank the previous owner says it runs out that's at 250 miles.how many miles should I get if it didn't cut off at s quarter.