Question about 2000 Cadillac Catera

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I drive a 2000 cadillac catera and when I shut the car off, when i turn the car back on, none of the controls for the radio, sometimes the trunk lock button, fuel tank door button will work. Then afte

I drive a 2000 cadillac catera and when I shut the car off, when i turn the car back on, none of the controls for the radio, sometimes the trunk lock button, fuel tank door button will work. Then after I've been driving for awhile all the controls start working again.

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K134 Multifunction relay.

Posted on Aug 28, 2009

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1 Answer

1999 Cadillac carteria body control module location


Body Control Module, located under dashboard,
left side ( driver side), have to un assemble the
fuse cover, then move slightly other kind of carbord
or paper cover , then you can
introduce your hand, through the left side or column
and you will fill a box, some times humidity may affect
and you will have radio goes on and off, trunk will not
open so as the gas fill door will not open at all (if this
happens, you have to enter trunk via the rear seat,
pull the emergency trunk opening , then go to trunk side
open the back right side, and introduce your hand where
the gas fill door lock (solenoid) , and pull the lock slightly
back, this will unlock the door and allow you to fill some
gas,, other wise you have to turn on and off your car
unitl it works ,, This problem I have associated it with
rust formation on terminals and bad car battery , you may
need to replace the battery.

You may have it removed and check by special electronics
shop that may open and clean and re build the contactors, or replace it with the same model, it has to be the same car year, check the model,,

I have a 1999 Catera, and have experimented a lot of things..
but its a good car

Dec 02, 2014 | 1999 Cadillac Catera

1 Answer

Cant open gas door


Fuel door and trunk issues? How about no fog lights and your radio randomly turning off. If you have any of these issues it is the k134 multifunction relay. It controls all of the above.

Jun 04, 2012 | 2000 Cadillac Catera

3 Answers

My 2000 cadillaC catera radio dont play, trunk won't open as well as fuel door wont open. What to do?


Its the K134 Multifunction Module. Its located under the drivers side dashbaord...

Mar 23, 2011 | 2001 Cadillac Catera

1 Answer

Turn the key back dome lights and radio work when doors are shut and not started but as soon as you open the door or start the car they do not work. the car is a 2000 catera. I think I need a k134 multi...


so you start the car and the radio will not work? but the radio works with he door open and key off? its normal to turn the car off and the radio play until you open the door.

Nov 24, 2010 | 2000 Cadillac Catera

3 Answers

Car: 2000 Cadillac Catera Radio: Bose Info: Power goes off to radio, fuel door and trunk release. Seems to happen randomly. Any thoughts?


K134 Multifunction relay is on the driver side, inside the dash above the driver's left ankle (area). (2) panels need to be removed below the steering column to access this area. The first is a panel that matches your dash. The second is a cardboard panel with foam padding on it that encompasses the arms holding the brake pedal and accelerator. You'll then need to lay on your back on the floor board, head in first. Look for a gray box about 3" square by 1 1/2" thick. Push it 'up' off of it's mounting bracket to release. Unplug the wiring harness. Plug in new relay and re-mount.

Nov 01, 2010 | 2000 Cadillac Catera

3 Answers

My radio, trunk and fuel door all work sometimes. Where is the Multifunction relay? I believe the part# 90494163 It is a 2000 Catera Cadillac. Thanks


K134 Multifunction relay is under the dash on the driver side. When sitting in driver seat, above your left ankle, it is located behind a cardboard panel. Replacing cures many problems with the Bose radio, sunroof, gas and trunk releases, fog lights.

Oct 28, 2010 | 2000 Cadillac Catera

1 Answer

Similar problem and I need to find a free wiring diagram


Change body computer (buy a used one).
Get it programmed by dealer because radio will be locked out.

Jul 16, 2009 | 2001 Cadillac Catera

2 Answers

Wiring diagram for cadillac catera 2001 need to download free diagram radio and stero shut off occasionally which also locks trunk and fuel door


It is the BCM (Body control module). The radio is married to it via the serial number. You need to replace the module (lower right kick area, pass side in front of front door, behind plastic...aluminum box), and have it programmed to your car through a Tech 2 diag system.....dealer...this unit controls just about everything apart from the brakes, engine and tranny which all have their own computer. You probably have issues with the sun roof if you have this option.

Jul 16, 2009 | 2001 Cadillac Catera

4 Answers

Gas tank won't open, trunk won't open, radio stopped working, left tail lamp won't work


It's the body control module. It's located under the dash to the left of the steering column. I had same problem, went to the junk yard and bought one and the problem went away. Dealer wants $600.00-700.00 for the BCM, I paid $30.00

May 30, 2009 | 2001 Cadillac Catera

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