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John, ASE Certified Technician
Category: Cadillac
Satisfied Customers: 9176
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2002 cadillac escalade has no power to fuel pump and fuel gauge

Customer Question

2002 cadillac escalade has no power to fuel pump and fuel gauge is not working anymore was driving and is just started dieing has new pump but still has no power to it
Submitted: 7 years ago.
Category: Cadillac
Expert:  John replied 7 years ago.
Chat Conversation Started
john :

Hello & Welcome to JA,

john :

Have you checked any circuits or performed ant tests ?

Customer: i checked relay and it has new pump on it thats all
john :

Make sure ECM B fuse is good.

Customer: and if that is good then ?
Customer: that one is under hood or inside
john :

Also ENG FUSE 1,then cycle ignition key to see if the fuel pump relay cycles on for 2 seconds.

john :

underhood fuse block

Customer: they are good and i have no blown fuses
john :

OK,does the relay cycle when the key is turned on from the off position.You may need to listen carefullt or have someone feel the relay.

Customer: nothing at all
john :

Ok,remove the fuel pump relay .Use a 12 volt test lamp (connected to ground) & see if you have voltage on one circuit & ignition swiched voltage on another.

Customer: nothing
john :

There is no voltage on any terminal in the terminals in which the fuel pump relay plugs into ?

Customer: none at all sir
john :

Ok,the ECM B fuse (in the under hood electrical center) is where the voltage passes to the fuel pump relay.Inspect the fuse closely,try another fuse in its place .Look closely at the terminals to make sure they are not spead.