Under the drivers side door, on the frame....
SOURCE: Fuel filter location Sierra
I have been told by a mechanic that the fuel filter is inside the fuel tank. Have to either drop the tank or remove the pickup bed. Access is on the top of the tank. This is poor engineering.
SOURCE: 1996 GMC Sierra 1500 XC 4x4 5.7 Hard To Start
It is probably the fuel pump. If I remember the number correctly, this fuel system needs about 50 lbs to open a valve.
Until this valve opens, no fuel gets to the fuel nozzels.
SOURCE: replaceing fuel pump on gmc sierra
The fuel pump is located INSIDE the gas tank and is a combination fuel pump/sending unit for the fuel gauge. Be prepared for a large repair bill. About $600!
SOURCE: I need to change my
There is a schrader valve on the fuel line on the engine for attaching a fuel gauge to monitor the fuel pump for testing purposes, and it should have a cap on the valve similar to a valve stem cap on a tire. (relieving the fuel pressure is similar to letting the air out of a tire and watch out for any fuel spray) or you can loosen up a line fitting at the fuel filter until the pressure bleeds off then replace the fuel filter, and you might want to have a pan to catch the fuel in, and be very certain that there is no ignition source anywhere near the vehicle.
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