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To fix an electrical problem on my 2001 Cadillac Catera I need to replace a "K134 multifunction relay". I am also told that this is a GM part number 90494163. Can you help me locate one please?

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I found some today on "e-bay" at prices ranging from $55 to $89.
They are also available at Amazon, I think.
God bless your efforts.

Posted on Dec 23, 2016

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1 Answer

What is a K134 relay for? Check engine light on and fuel door won't open, trunck won't open, and a/c blows hot air.


the K134 relay is a multifunction relay the controls the proper operation of the radio, fuel door, and the trunk. As far as I can tell the A/C is a separate issue and the check engine is most likely related to the relay being bad.

Aug 21, 2011 | 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

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

2001 catera drain on voltage guage-battery good-alternator new-guage at low level,one above redline-car dies either in idle or whilr driving-everything goes dead-car won't re-start-drains battery...


Yes it very well could be. Do you have a good (I mean good) battery in the car?
As well, believe it or not, check and replace the cable going from the battery to the starter and clean thoroughly the battery terminals. I fished mine out and the middle of the cable was cooked under neath wire loom. I used a #0 welding cable, about 40" long.

Repaired the K134 relay box by resoldering all the traces, replaced battery and cable, cleaned battery terminals......2 years and still wife's 01' is running strong! Before this, the wipers ran in slow motion.

Oct 10, 2009 | 2001 Cadillac Catera

4 Answers

I have a 2000 cadillac catera my radio, maplight, high beam light, heated seats, and onstar does not work when I start the engine. when I turn it off they work until I open the door. PLEASE HELP


Did you recently have a loss of power to the car? change the battery? if so, you need to reset your system. My husband and I just figured this out this weekend. His sunroof hasn't worked in two years and it turns out you have to reset all the power options in the car. Google 2000 cadillac catera %calibrate ETC% loss of power, you'll find the step by step instructions for recalibrating the car's computer and resetting the power options

Mar 15, 2009 | 2000 Cadillac Catera

1 Answer

Radio went out


Either a defective radio, fuse, or faulty K134 multifunction relay.

Feb 17, 2009 | 2000 Cadillac Catera

1 Answer

Need to know location of heater control relay in Cadillac Catera


Most likely the K134 multifunction relay. Not a major expense to fix.

Dec 14, 2008 | 1997 Cadillac Catera

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