I have a 92 GMC Sierra 1500, I need to know where the relay switch is for the fuel pump.. Any help would be greatly appreciated Thanks

2007 GMC Sierra 1500 fuel pump relay Bing Videos


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You checked the fuel pump relay in the engine compartment fuse / relay box ? The fuse that powers the fuel pump ? ECM B fuse 20amp - engine compartment fuse panel . Is the PCM turning on the fuel pump relay ? Do you know how to test automotive electrical circuits using a DVOM - digital volt ohm meter an a wiring diagram ?

GM Fuel Pump Relay Testing

Don't skim on a low cost oil pump. I've seen too many failures due to trying to save a few bucks. External parts maybe but NOT INTERNALS. Pay the extra for a good oil pump.
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on opposite side of fuel pump relay .there the relay and fusible link then at the end there is a small block it contains the fuse 20 amp

What are you calling a switch? theres a fuel pump relay mounted on the firewall the GRAY wire powers the fuel pump.

Check connections at/or replace oil pressure switch. Your oil pressure switch is also a safety feature that shuts off power to fuel pump in case of accident or rollover.

yes indeed it is going to! but first check the fuel filter for blockage

Check coolant level. Check for heat at the heater hose going from water pump to heater core at firewall. Check to see that cable is moving coolant control valve from the closed to open position. Low mileage so it shouldn't be plugged heater core.

try the brake booster hose it might be sucking air

The fuse is actually a Relay Switch and its located in the Fuse Relay Center on the driverside of the engine compartment. The Black Box is labled Fuse Relay Center, the diagram on the cap displays which Relay is the Fuel Pump relay...the Relay switch is usually $8-$15 depending on where you shop