There is NO SUCH THING AS A Cadillac CATERA FROM 2003...They stoped making them in 2001
The fuel pump is inside the gas tank. You must remove the tank to change the pump.
I have a 2000 cadillac catera sometimes the radio will shut off when this occurs the fuel door will not open neither will the trunk
location location
On a 1999 catera it is next to the fuel tank. Slide under the trunk of the car and you will see it attached to the front of the fuel tank.
The fuel pump is always in the gas tank.
GM vehicles are not equipped with an inertia fuel shut-off switch.
Check your crank shaft sensor first.
Behind the passenger rear axle by the fuel tank very easy fix
passenger side rear of the car forward of the fueltank
Should be under vehicle along fram rail - follow the fuel line from the fuel tank
White smoke is a sign of excess fuel or running "rich".
The 2003 Cadillac CTS runs on regular unleaded.