Question about 1995 Cadillac DeVille

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Front seating area, passenger side, under dash, mounted above kick panel

Posted on May 25, 2010


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Locate Ecm

You don't indicate the type of vehicle involved so it would be impossible to tell you where the ECM is located. The one place it is most likely not is on the engine

May 13, 2013 | Cars & Trucks

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ECM FOR 1996 Plymouth breeze located

I would suggest a repair shop

If you can't find it ---you most likely don't
know it needs to be replaced & have done
no testing to find the real vehicle problems

You replace it & the vehicle won't start,then what?

Nov 29, 2012 | 1996 Plymouth Breeze

1 Answer

Were is the ecm located?

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    When the term Electronic Control Module (ECM) is used in this guide it will refer to the engine control computer regardless that it may be a Vehicle Control Module (VCM), Powertrain Control Module (PCM) or Engine Control Module (ECM).
    The Electronic Control Module (ECM) is required to maintain the exhaust emissions at acceptable levels. The module is a small, solid state computer which receives signals from many sources and sensors; it uses these data to make judgments about operating conditions and then control output signals to the fuel and emission systems to match the current requirements.
    Engines coupled to electronically controlled transmissions employ a Powertrain Control Module (PCM) or Vehicle Control Module (VCM) to oversee both engine and transmission operation. The integrated functions of engine and transmission control allow accurate gear selection and improved fuel economy.
    In the event of an ECM failure, the system will default to a pre-programmed set of values. These are compromise values which allow the engine to operate, although at a reduced efficiency. This is variously known as the default, limp-in or back-up mode. Driveability is almost always affected when the ECM enters this mode.


    See Figures 1 and 2

    0900c152800a7f96.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Fig. 1: ECM mounting scheme-except 1996 models

    0900c152800a7f97.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Fig. 2: ECM mounting scheme-1996 models
    The ECM is located in the passenger side footwell in the kick panel up to 1996. In 1996, the ECM is located in the engine compartment next to the battery.

    1. Disconnect the negative battery cable.
    2. Disengage the connectors from the ECM.
    3. Remove the spring retainer off and over the rail of the ECM on vehicles except 1996.
    4. Slide the ECM out of the bracket at an angle.
    5. Remove the ECM.

    To install:
    1. Install the ECM into the bracket.
    2. Install the spring retainer (except 1996) and plug in the electrical connectors.
    3. Connect the negative battery cable.

    Jun 30, 2012 | 1993 GMC Safari

    1 Answer

    Subaru 97 speed sensor trouble code p0500 not passing admissions.. what part to I buy and where is the sensor located?

    There are actually two Vehicle Speed Sensors (VSS). I'm going to assume you have a 2.5 liter engine and an automatic transmission.

    The Vehicle Speed Sensor 1 (output shaft rotation sensor) is mounted to the extension case (from the outside of the case). The sensor outputs a pulse signal which is transmitted to the TCM where it is converted to vehicle speed.

    The transfer clutch drum is connected directly to the rear wheel driving propeller shaft. Vehicle speed sensor 1 on the AWD model detects rear-wheel speed.


    Vehicle Speed Sensor 2 provides vehicle road speed information to the ECM. The ECM uses this data to properly determine ignition and fuel delivery curves. The sensor consists of a reed switch and magnetic rotor turned by the speedometer cable.

    One rotation of the magnetic rotor opens and closes the reed switch four times, producing a digital signal which is converted to vehicle speed by the ECM. The sensor operates whenever the vehicle is moving with ignition ON. As the transmission rotates, the speed sensor sends a pulsed on/off signal to the ECM.


    The speedometer uses VSS 2 for it's signal.

    Hope this helps (remember to rate this answer).

    May 24, 2011 | 1997 Subaru Outback

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    How hard is it to replace a emc in a 95 jimmy 4.3 vortec

    I assume you are referring to the ECM. The ECM is fairly simple to replace on this vehicle. It is located on the passenger side of the vehicle under the kick panel just under the glove box. Disconnect the battery and remove any static from your body by touching a metal part of the vehicle. It would be in your best interest to get a grounding strap that goes on your wrist and clips to a metal ground. You can get them at your local Radio Shack. Once you have grounded yourself the ECM can be removed from its mounting bracket and the electrical connections removed. Ground yourself again prior to touching the new ECM, connect the electrical connectors to the the new ECM and re attach it to the mounting bracket. Re-connect the battery, start the vehicle. The vehicle may idle rough for a few minutes while the ECM "learns" the engine systems. Drive the vehicle conservatively for the first 15 minutes to allow the ECM to continue to "learn". If you have a " CHECK ENGINE" light the problem can be retrieved for FREE by visiting you local AUTO ZONE or other auto parts store. Good luck. If you can hook up a VCR or a DVD player you should be able to handle this without much difficulty.

    Mar 12, 2011 | GMC Jimmy Cars & Trucks

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    Where is ECM relay


    Aug 08, 2010 | 2005 Kia Optima

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    The location of the ecm fuse on 98 isuzu rodeo

    ECM fuese are located in the fusebox in the engine compartment-left sidefacing the vehicle.

    Feb 19, 2009 | 1999 Isuzu Rodeo

    1 Answer

    Where is the PCM located on a 1991 Oldsmobile 98 Regency elite?

    The PCMor powertrain control module is only on 1996 and newer cars.Earlier models have a ECM or electronic control module/pcm.You want to change the ECM if its a 1992.Its located under the right hand side of the instrument panel.The ecm has a prom( programmable read only memory)in it.You will need to remove this from the old ecm and install in the new ecm.The ECM/PCM can be used in many different GM vehicles but the prom is very specific and must be used only in the vehicle it was designed.The prom will not come with the new ecm and must be carefully removed and installed on the new ecm.There also is a CALPAK in the ECM ( A devise for fuel delivery) This may come with the new ECM But make sure all parts are the same.You should get a vehicle repair manual to do this job correctly,and make sure you do not damage your PROM.Your PROM is very IMPORTANT!

    Oct 21, 2008 | 1991 Oldsmobile Ninety Eight

    3 Answers

    PCM module, ECM module 1996 Chevy Suburban K model

    Powertrain Control Module = under right side of dash, near blower motor.
    Engine Control Module = same as above
    Vehicle Control Module = same as above

    All Suburban vehicles are equipped with only one of these choices. Good luck.

    Oct 04, 2008 | 1996 Chevrolet Suburban

    1 Answer


    Located center of the vehicle, under the dash and behind the center console.

    May 25, 2008 | 1992 Dodge Stealth

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