2020 GMC Sierra 1500 3.0 Duramax (Aux fuel tank)

bryan boada · May 11, 2020

I am looking for a large capacity fuel tank option for my truck. The ideal would be direct replacement mounted under the truck but I think i may have to settle for in bed hard line. I would like one that is designed for my truck to save as much bed space as possible. I have exhausted the search.. think I may have to go custom if I dont get any help here.

Thank you in advance!

Rubyralph · May 11, 2020

Checked already about this and found Titan makes Aux fuel tanks that fit in place of the spare tire for other pickup trucks.

This would be an option once they make one for our trucks!?

Colossus · May 14, 2020

Not very much demand out there for larger fuel tanks in 1/2 tons.

Supercup · May 14, 2020

check transfer flow as well - they make something - have been talking to them about doing a larger replacement tank for 1500 chevy/gmc - 26 gallons is way too small, especially for 6.2L. So far they have not done anything except bed tanks for the 1500.

Link: https://www.transferflow.com/shop/

I used their replacement tank on last 3 diesel trucks (2500 or 3500) and loved having 58 gallons +/- on on the main tank. We towed boat 550 miles on vacation without stopping, as the kids kept saying, no we just want to get there - 8 hours and you jump out nad your legs don't work that well, right off!

Edited May 14, 2020 by Supercup