Cannot get fuel gage to operate
SOURCE: 1979 Chevy 3/4 ton Pick up, dual Fuel Tank, wiring
Get Chilton Manuals at your local autoparts store they will help you with this.
SOURCE: fuel pump or fuel pump relay on 1989 Chevy Suburban 1500 4x4
Check in relay box on passenger side near firewall for fuel pump relay.
By -pass, no such luck that I' aware of, sorry.
SOURCE: fuel pump wiring diagram for 1998 chevy express
Well if theres power going to the relay but not out, then you need a new relay. If theres power in and out of the relay, you might need a new fuel pump. The electric fuel pumps inside the tank are actually lubricated by the fuel as it pumps it, and if it runs dry long enough, it can burn out the pump
SOURCE: fuel pump wiring diagram 1988 chevy truck
I personally have 1988 GMC truck and had to replace the fuel pump. I found all the info including wiring diagram in a haynes repair manual. These can be purchased in most automotive parts stores. Something I found interesting is that the fuel pump's operation works through the oil pressure switch, located by the distributor screwed into the engine block. If this switch is stuck or sticking it will affect the fuel pump. Replaced a good fuel pump for nothing! The truck had sit up for awhile and the ground wire connections had to be cleaned as well.
SOURCE: 1982 chevy truck with dual gas tanks with guage or tank problems
all you need to do is listen to hear the tank switching valve is working. It will make a soft noise under the rear cab section with the key on with the engine off. zif you do hear it sounding the switch your tank unit for that one tank you try to switch to is a fault. Sorry no illustrated diagrams are on hand, just knowledge
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