Fuel tank capacity Fuel tank size

[Stig]

What gallon size and ordering codes for a larger fuel tank?
1500 trail boss 4x4 LT crew cab.

do they offer duel tanks?

Edited March 8, 2020 by Stig

[eppieguy]

No options for larger tanks, no dual tank options either. 

[bruincounselor]

More recent updates here; there is at least one great option: 

 

[redwngr]

GM still doesn't offer alternate tank sizes.

 

Any alternatives are aftermarket. 

 

 

GM 1 Ton Cab and Chassis is available with dual tanks 

 

[swathdiver]

GMs thinking is that it costs fuel to carry fuel so they give just enough to travel a certain range.  The feds used to consider the fuel tank part of the emissions system and that's why nobody has made gasoline tanks for a long time.  I reckon that will soon change.