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- - Increase fuel capacity (https://chevroletforum.com/forum/silverado-fullsize-pick-ups-21/increase-fuel-capacity-57736/)

Havasu Retired

April 17th, 2013 12:06 AM

Increase fuel capacity

I own a 2003 Chevy 2500HD pickup. I tow a 2003 Keystone 5th wheel. My dilemma is my main gas tank is too small (26 gal). I would like to install an auxiliary tank (gasoline) in the bed of my truck. Can someone point me in the right direction to have my project completed. I prefer to have the tank installed as I'm not a mechanic. I live in Arizona. Thank you

country_09

April 18th, 2013 2:56 PM

I know there are a few toolboxes that go in the bed of your truck and have a tank inside them. My gf's dad had one and when the main tank started to get low, he'd flip a switch and the new tank would gravity feed into the existing tank

JK23112

April 21st, 2013 8:32 AM

It should not be very difficult for a professional mechanic to install one. I see a lot of car-haulers using them on dually pickup trucks (F-350, Silverado 3500, etc.) to extend their range and to possibly enable them to "skip over" buying fuel in high-tax states.

It also allows them to keep their weight more evenly-distributed (more towards the front) when hauling a gooseneck trailer with three or sometimes four vehicles on it. My guess is that the tanks hold 100 to 150 gallons by looking at them.

Good luck!!

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