1999 Cadillac DeVille - Page 4 - Answered Questions & Fixed issues

perhaps reading your owners manual will explain howto do it . some use the trip mileage along with the key .

1999 Cadillac... | Answered on Jan 29, 2016 | 92 views

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1999 Cadillac... | Answered on Jan 25, 2016 | 152 views

You can rent a cooling system preasure tester at a parts store. These engines run so close to boiling that they must be able to hold presure or they overheat. Presurize the system and check for even the smallest leaks at all hose connections. I fought this problem for a long time before I figured it out.

1999 Cadillac... | Answered on Jan 24, 2016 | 507 views

You should not need to pump the throttle. That does not have any effect on starting the engine on a fuel injected car.
How do you un-stick the throttle ?

1999 Cadillac... | Answered on Mar 07, 2016 | 125 views

Most likely a cracked heater core.
Check your anti-freeze see if it is low.
Check passenger side for wet mat.
Both signs of a heater core problem.

1999 Cadillac... | Answered on Dec 12, 2015 | 226 views

The problem may be a bad alternator. When the battery is completely dead jump starting the car will charge the battery enough to run the car for short periods. Take the alternator to the auto parts store and have it tested (usually for free).

1999 Cadillac... | Answered on Dec 11, 2015 | 127 views

TDM ? explain what you think this is ? If you are referring to a module here is a list of the ones on your caddy.
The control modules on the class 2 data line can include the following modules:
The body control module (PZM)

The cellular telephone module (PHN)

The climate control panel (CCP)

The continuously variable road sensing suspension (CVRSS) module (RSS) (w/F45)

The electronic brake and traction control module (EBTCM) (ABS)

The heater and A/C programmer (HCM)

The inflatable restraint sensing and diagnostic module (SDM)

The instrument cluster (IPC)

The memory mirror module (MMM) (w/A45)

The memory seat module (MSM) (w/A45)

The powertrain control module (PCM)

The radio (IRC)

The radio interface module (RIM) (w/UQ4)

The remote function actuator (RFA) module

1999 Cadillac... | Answered on Dec 10, 2015 | 161 views

It is more than likely the bulbs. Each of the rear bulbs have dual elements in them. They have one for running lights and another for brake and turn signals. Start there if the front signals blink , that will be your best bet.

1999 Cadillac... | Answered on Nov 29, 2015 | 194 views

Your owners manual should have all the information you need

1999 Cadillac... | Answered on Nov 09, 2015 | 105 views

A few things could be wrong....it could be your brake control module, anti-lock brake system or a wheel speed sensor. The best thing to do is to get it into a garage and have them take a look at it and give you an idea of what is wrong. Either way, if you do not have the proper tools, you are better off taking it to the shop.

I hope this helps.

1999 Cadillac... | Answered on Sep 03, 2015 | 511 views

you cant its a one piece unit

1999 Cadillac... | Answered on Aug 29, 2015 | 129 views

You will have to get the codes checked.This will tell you what could be causing the problem.Sounds like ignition problem.But without codes it hard telling exactly the problem.As far as the morning starts you might have to clean the throttle body.When you get the codes post back and I can help explain the code or codes and what you should do.Auto Zone will check them for free.Hope this helps.Good luck.

1999 Cadillac... | Answered on Jul 28, 2015 | 316 views

  • Examine the left dash panel to find the headlight switch. This is the control you use to turn the headlights on or off, with the exception of the daytime-running lights.
  • Look directly beneath the headlight switch. You'll see a small lever. This is called the "Twilight Sentinel." Move the lever all the way to the left to the "Off" position.
  • Turn the headlight switch to the "Parking Lights" mode. This icon has a symbol of two small bulbs. The daytime-running lights are now turned off.
  • 1999 Cadillac... | Answered on Jul 04, 2015 | 255 views

    Repair manual, your library may have. Sometimes Google images will have diagrams, or photos. DIYer? you may need a repair manual in the future anyway. Your favorite auto parts store should have. (easy to refer to) also.

    1999 Cadillac... | Answered on Jun 13, 2015 | 94 views

    your anti theft device is activated,you need to lock and unlock your doors a couple times with the key fob,not the key,and then you need to put the key in the ignition and start it,if you dont have your key fob,call your car dealer to get a new one,they are programmed for each car only,you cannot bypass it.

    1999 Cadillac... | Answered on Jun 09, 2015 | 82 views

    Do you have a sunroof or moonroof? If so the problem is going to be in the drain for that sunroof or moonroof. If you open the roof, on either front corner you will see a small circular hole. Take some compressed air and blow it through each of those holes. You may see debris come out of the bottom near the back of your wheel well. Take cup of water and slowly pour that near those holes and make sure it goes through. Usually when that drain is clogged the water from a rain storm will flood into the passenger cabin.

    1999 Cadillac... | Answered on May 31, 2015 | 524 views

    Air Mix Actuator Replacement - Driver

    Removal Procedure

    1. Remove the right sound insulator. Refer to Instrument Panel Insulator Panel Replacement - Right Side in Instrument Panel, Gauges and Console.

    2. Remove the instrument panel compartment. Refer to Instrument Panel Storage Compartment Replacement in Instrument Panel, Gauges and Console.

    3. Unsnap the rod from the plastic retainer on the actuator arm.

    4. Remove the two screws from the actuator (2).

    5. Disconnect the electrical connector (1).

    6. Remove the actuator (2).

    7. Inspect the air mix door for free travel.

    1999 Cadillac... | Answered on Nov 19, 2018 | 1,373 views

    OBDII Code U1255 CADILLAC Lost Communications HelpForCars net P1610 Cadillac how to repair
    DTC B1348 Very Low A/C Refrigerant Pressure
    DTC U1255 Serial Data Line Malfunction
    The class 2 serial data line communicates information between the modules. Each module connected to the serial data line is assigned a recognition code, or address. This code is used in order to identify which modules are communicating. Modules communicate with each other by periodically sending state of health (SOH) messages. When the ignition switch is in RUN, each module that is communicating on the serial data line sends an SOH message every 2 seconds. This ensures that the system is operating properly. At key on, most modules must learns the initiation data from other modules on the serial data line. When a module requests initialization data from another module, and that request is not acknowledged after 5 seconds, the module stores class 2 initialization error DTC U1255.
    Conditions for Setting the DTC
    The module does not receive required initialization data on the class 2 serial data line. The module retries the request for 5 seconds, and then sets DTC U1255.

    This DTC only sets if DTC U1300 or U1301 are not current

    Attempt to establish communication with all of the modules using a scan tool.
    Does the scan tool communicate with all of the modules?
    Go to Step 3
    Go to the appropriate diagnostic system check for the module that is not communicating

    1999 Cadillac... | Answered on May 12, 2015 | 387 views

    That is a three element lamp bulb. Brakes, turn, and tail lights are all in the same bulb. Replace the bulb and all should be OK.

    1999 Cadillac... | Answered on May 11, 2015 | 179 views

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