Last post on Sep 11, 2012 at 3:39 AM
You are in the Cadillac DeVille
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Cadillac DeVille, Lights, Electrical, Sedan
#141 of 191 Re: 2000 Cadillac Deville wont start [sasso1]
Sep 12, 2008 (9:15 pm)
Is your battery under the rear seat or under the hood?
If under the rear seat, I would re-check the battery cable connections. I would also check the negative cable where it is screwed into a nut that is basically in the body just to the right of tthe battery. My 2005 needed this ground tightened down. It is covered with paint, which also makes for a poor connection.
If under the hood, I would check the connection, plus you might have corrision inside the rubber covering the cables, either positive or negative. Just moving these cables around to put the battery in could have broken strands inside the rubber that cannot be seen.
And, you could have bought a dead battery. What is the voltage at the battery connections, with the car turned off, and also while running. A battery in good shape should have 12.6volts. When charging, there should be anywhere from 13 to 15volts at the battery.
#142 of 191 Re: 2000 Cadillac Deville wont start [bolivar]
Sep 13, 2008 (9:34 pm)
Thanks for the reply. I checked and double checked all of the connections and still nothing. Someone told me that it might be the crank sensor. What do you guys think? I want to make sure I try everything before I tow it to the dealer. So any and all ideas would be appreciated. Thanks
#143 of 191 Re: 2000 Cadillac Deville wont start [sasso1]
Sep 14, 2008 (1:26 am)
2000/2001 are bad years for crank sensors, but they usually kill a car dead while it is running.
#144 of 191 Re: 2000 Cadillac Deville wont start [bolivar]
Oct 14, 2008 (12:56 pm)
I've done everything I could think of and now my dash reads "service theft system". Would you happen to know how to bypass this? Your help is greatly appreciated. Thanks
#145 of 191 Re: 2000 Cadillac Deville wont start [sasso1]
Oct 14, 2008 (9:21 pm)
From my 2005 manual:
Your vehicle is equipped with the PASS-Key® III
(Personalized Automotive Security System)
theft-deterrent system. PASS-Key® III is a passive
theft-deterrent system. This means you do not have to
do anything different to arm or disarm the system. It
works when you insert or remove your key from
When the PASS-Key® III system senses that someone
is using the wrong key, it shuts down the vehicle’s
starter and fuel systems. The starter will not work and
fuel will stop being delivered to the engine. Anyone
using a trial-and-error method to start the vehicle will be
discouraged because of the high number of electrical
When trying to start the
vehicle, if the engine does
not start and the
SECURITY light comes on,
the key may have a
Turn the ignition off and
If the engine does not start, and the key appears to be
undamaged, try another ignition key. At this time,
you may also want to check the fuse. See Fuses and
Circuit Breakers on page 5-98. If the engine still
does not start with the other key, your vehicle needs
service. If your vehicle does start, the first key may be
faulty. See your dealer who can service the PASS-Key®
III to have a new key made.
It is possible for the PASS-Key® III decoder to learn the
transponder value of a new or replacement key. Up to
10 additional keys may be programmed for the vehicle.
This procedure is for learning additional keys only.
SERVICE THEFT SYSTEM – 34: This message means
there is a problem with the PASS-Key® III system. A
fault has been detected in the system which means that
the system is disabled and is not protecting the
vehicle. The vehicle usually restarts, however, you may
want to take your vehicle to your GM dealer before
turning off the engine.
End manual cut and paste.
Your 2000 probably has some version of this security system. I don't think it will still have the 'resistance pellet in the key' system. The manual says this PassKey3 system has a transponder in the key, and it may be damaged. I think you are going to have to get some professional help for this, unless you have a bad key/s. If a key got really wet, or was physically damaged, I think you might need a new one and have it re-programmed.
Here is what my manual says about programming keys:
Canadian Owners: If you lose or damage your keys,
only a GM dealer can service PASS-Key® III to
have new keys made. To program additional keys you
will require two current driver’s keys (black in color). You
must add a step to the following procedure. After
Step 2, repeat Steps 1 and 2 with the second current
driver’s key. Then continue with Step 3.
To program the new key do the following:
1. Verify that the new key has PK3 stamped on it.
2. Insert the current driver’s key in the ignition
and start the engine. If the engine will not start see
your dealer for service.
3. After the engine has started, turn the key to OFF,
and remove the key.
4. Insert the key to be programmed and turn it to ON
within 10 seconds of removing the previous key.
5. The SECURITY light will turn off once the key has
been programmed. It may not be apparent that the
SECURITY light went on due to how quickly the
key is programmed.
6. Repeat the Steps 1 through 4 if additional keys are
to be programmed.
If you are ever driving and the SECURITY light comes
on and stays on, you will be able to restart your
engine if you turn it off. Your PASS- Key® III system,
however, is not working properly and must be serviced
by your dealer. Your vehicle is not protected by the
PASS-Key® III system at this time.
If you lose or damage a PASS-Key® III key, contact
your dealer to have a new key made.
In an emergency, contact Cadillac Roadside Assistance.
See Roadside Service on page 7-5.
#146 of 191 IO22-PANEL DIMMING SWITCH CIRCUIT
Jan 03, 2009 (8:33 am)
Anyone have info on this code? were is this at on the car? 95 deville 4.9l i have looked in the repair book, no luck. any and all help would be great.
#147 of 191 Turn signal switch "1999 Cadillac Deville"
Feb 19, 2009 (9:06 pm)
Can someone tell me how hard it is to replace the turn signal switch on this car (1999 Cadillac Deville) I bought the switch I just need some advice on it. the car does have an air bag.
Is it something that I can do Or do you think I need to take it in?
#148 of 191 Key Lock Malfunction?
Mar 13, 2009 (8:04 pm)
So my boyfriend bought a 1995 Cadillac DeVille a few weeks ago and the weirdest thing keeps happening with his key lock (The automatic lock he keeps on his key ring- if that's what it's called). Well, to explain, he lives in an apartment complex in Chicago. When he parks his car behind his aparment (or between his building and the connecting one) his key lock won't work, it won't lock, or if it does, it won't unlock. Either way the key lock doesn't work. He tries to unlock the car with the key in the door but that sets the alarm off. It's frustrating for him and we both think that there could be some kind of interference from the surrounding buildings. It works everywhere but when he parks the car behind his apartment. But could that just be the problem? I know the people that live below him have a computer in the back room that over looks the parking area, and the buildings that connect to his have Wi-Fi, but I don't know if that's ALL that's causing the problem. If there's something wrong with the sensors or something else that's affecting it. Someone PLEASE let me know if there could be something else that could be wrong. Either reply here or e-mail (sagitarius12588aol.com) Thanks so much!
#149 of 191 04 devills steering
Sep 28, 2009 (11:50 am)
the steering on my 04 deville seems extra stiff, is this normal?
#150 of 191 Interior lights
Oct 13, 2009 (8:46 am)
I checked the fuse for the interior lights. I think it feeds a relay that might be bad but I'm not sure where it's located. Anyone had this problem before? It's a 97 Coupe DeVille.