RepairPal is your advocate for car care advice and guidance

Q: fuel pump problems on 1999 Cadillac DeVille

i do not get any power to the fuel pump all fuses and relays are good and i also get a service anti theft carm may not start what do i do to fix this
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
It is not uncommon for the wires to break at the ignition lock cylinder. This will cause the theft system to misread the key. If this is the case the ignition lock cylinder must be replaced. The wires from the lock cylinder snake down the steering cloumn to a connector at the base of the steering column.
i have the same promblem. i already changed out the ignition lock cylinder but still wont start i am not getting any fuel pressure. when key is turned there is no humm from the fuel pump. i have a 98 cadillac deville
Probably related to the "pass key" passive theft deterrent system. Read the section in your manual...twice ! Your system may be responding appropriately to the worn key you are using or to someone's attempt to use another key. I changed keys and the problem stopped !
Didn't find what you were looking for?