The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

*gmachinz* · 01-29-2018, 08:31 PM

You need to use a 1987 fuel tank switch-the TBI trucks didnt use the depress fully switches-those were momentary and powered a shuttle valve inside the selector to open/close LH or RH fuel tanks ports.

01-29-2018, 08:31 PM	#18
gmachinz Account Suspended Join Date: Jun 2011 Location: Des Moines, IA. Posts: 4,143	Re: LS swap dual tank harness kits! You need to use a 1987 fuel tank switch-the TBI trucks didnt use the depress fully switches-those were momentary and powered a shuttle valve inside the selector to open/close LH or RH fuel tanks ports.