Question about 2002 GMC Sierra 1500
The underhood fuse panel is marked and the fuel pump relay is there as well and they fail as the pumps fail tooand they need to be replaced if the pump does any way. The ground wire for the pump is sometomes overlooked when putting the tank back in as its on the top of the frame rail on the drivers side nearthe tank. It can be dirty too. Lesten for the pump running by having someone cycle the key with your ear against the tank it should come on and shut off a few seconds later. if its working. some can be put in wight the wires backwards and they run backwards but make no presure. Chaek for fuel pressure at the fuel rail. and many pump failures are because the filer is stopped up or theres somthing other than gas in the tank water) ( sugar ) some new pumps don't make enought pressure. Below 50 Lbs. it won't start. Adding gas or even carb spray to the air inlet may get it stasrted. The air in the system may get out then and it'll be OK. Sometimes the battery will be too low to turn the pump on but the engine will still crank
Posted on Feb 07, 2010
I believe it's located in the under hood fuse block on the drivers side. I'm not sure of the number but usually if the cover is still there it will have a diagram.
Posted on Feb 07, 2010
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Posted on Jan 02, 2017
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!
Posted on Jun 08, 2010
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