Question about 1996 GMC Yukon
There is a fuel pump relay under the hood - start there. there are some tests you can do to see if the relay is bad. One way is to jumper a wire from the positive side of the battery to the wire that goes to the pump from the relay socket and see if the pump runs. Then with a volt meter, you can check if there is voltage on the input side of the relay as well as the relay coil, and if there is a ground on the relay coil side when cranking the engine- this is the side that the computer uses to control the pump, by completing the ground. Then check all your fuses. More than likely it's your fuel pump relay. $8-$25 at your parts store.
Posted on Oct 03, 2010
You did that the hard way
If you had a wiring diagram,you could have started anywhere in the fuel system,checking as you went,until you had no voltage drop.
You could also have found a place, to put power to the pump, without removing the tank
There is a fuse,relay in most cases,fuel pressure regulator,etc in all vehicles. Have to know where and what to test.
Your working blind with no print of a system, your not knowlegable of.
Posted on Oct 03, 2010
I have a 98 gmc Yukon and I hooked a battery charger reverse and now its not starting the chow pumps not getting power I checked and changed the fuses and relays I also checked to see if the relay was getting power and it is any ideas
Posted on Mar 14, 2011
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Posted on Jan 02, 2017
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