4 ton have no power to the fuel pump changed the relay and the low oil switch the fuse is good but no power at plug to pump there is power to the middle pin I'm guessing its for the fuel gauge the two outer pin have no power...help
Cars & Trucks - GMC - G2500 - 1992 GMC G2500
Answers & Comments
Check for a ground to the fuel tank i had one i had to run a new wire from the frame to fix the problem