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  #1  
Old 10-24-2013, 08:14 PM
Flatlandor Flatlandor is offline
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Default 32 gallon fuel tank "thump" help please...

Well, I've got an order in for a new Laramie and I ordered the 32 gallon tank. ship date is supposed to be 11/4 which means I prolly can't change the order.

Just read that there is a "thumping" issue with this tank. Dang it! Didn't really "need" a 32 gallon tank but thought for long trips it might be nice for just $50 extra. I wouldn't have ordered it had I known.

For those that have it, is there any remediation technique? In other words, is the "thump" worse if you keep it full or if you only fill part way or what? Have you found any methodology to reduce the issue? When do you get the "thump"? All the time or what?
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Old 10-24-2013, 08:26 PM
Icehog Icehog is offline
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Quote:
Originally Posted by Flatlandor View Post
Well, I've got an order in for a new Laramie and I ordered the 32 gallon tank. ship date is supposed to be 11/4 which means I prolly can't change the order.

Just read that there is a "thumping" issue with this tank. Dang it! Didn't really "need" a 32 gallon tank but thought for long trips it might be nice for just $50 extra. I wouldn't have ordered it had I known.

For those that have it, is there any remediation technique? In other words, is the "thump" worse if you keep it full or if you only fill part way or what? Have you found any methodology to reduce the issue? When do you get the "thump"? All the time or what?
I have a 32 gallon tank and never had any issue, never a noise at any level.
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Old 10-24-2013, 08:35 PM
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GTyankee GTyankee is offline
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I have the 32 gallon tank in my "09
it has a FEEL of a thump, like someone slightly bumping their bumper & yours at a Stop Sign.
It happens between 1/2 to 3/4 on your gas gauge
You get used to it after a while
It happens when you Stop, then you feel the bump
You will read what people have done to try to eliminate it, some will say that turning off the Hill Start Assist works for them
It could be almost anything, or a combination of them
fuel being at a certain level
transmission shifting down to 2nd gear
braking system adjusting to a different pressure needing to hold the vehicle stationary
gas surge in the tank
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Old 10-24-2013, 08:46 PM
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Thunderhorse Thunderhorse is offline
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Its really not that bad, and the added range far outweighs the tiny thump.
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Old 10-24-2013, 08:51 PM
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Gantman Gantman is offline
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Flatlandor, it's nothing to worry about and isn't bad as some point it out to be. I have the 32 and like being able to go near 500 miles before the gas light comes on. If you coast to your stops and brake easy, you can minimize fuel slosh in these tanks. It works for me and has for 21K miles. The only time I get the 3/4 tank bump is when I am up on the wheel and impatiently hard on my brakes, which I have to remind myself, slow my roll before I kill someone.
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Old 10-24-2013, 08:52 PM
mces mces is offline
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I have the 32 gal tank and have not noticed any thump. I'm only on my third tank of gas though.
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Old 10-24-2013, 08:55 PM
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eethomas eethomas is offline
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Yep, I have the 32 gallon thump. Like GTyankee said, it only happens between 1/2 to 3/4 of a tank. Hill Start Assist or none of that other stuff helps it (at least it doesn't help on mine). Mine doesn't do it when it is full, and it doesn't do it after it gets down to about 1/2 tank down to empty, but you can definitely feel it between 1/2 and 3/4 of a tank when you come to a stop. I thought I had a hesitation or some sort of engine miss at first. I was waiting for the problem to get worse so I could take it to the dealer to have it checked until I read about it here on this forum, and then I paid attention to when it was happening and sure enough, that's what it is. Not really a problem now that I know what it is, but was quite concerned before.
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Old 10-24-2013, 09:10 PM
deathwarden5 deathwarden5 is offline
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Old 10-24-2013, 09:29 PM
mattp160 mattp160 is offline
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I haven't had any issues with fuel sloshing around. I've had my truck since Friday so I haven't put many miles on it. I filled it up at half tank just to save the bank, not ready to see the total $ amount for 30 gallons of fuel
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Old 10-24-2013, 09:53 PM
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Grubrunner Grubrunner is offline
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OP,

Where did you read about the "thumping" issue?
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