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-   -   Help with relearn PCM (https://montecarloforum.com/forum/general-monte-carlo-talk-9/help-relearn-pcm-41278/)

Dam20735 02-04-2013 06:59 PM

Help with relearn PCM
 
I just got my new PCM today an now I'm trying to relearn it but it wouldn't relearn all it keeps doing is clicking

LW57912 02-04-2013 09:06 PM

Double check your battery is connected properly. I just had a similar issue and my battery terminal was stripped and not making good contact

If not that, try these

1st one:

1. Disconnect battery
2. Install new computer
3. Reconnect battery
4. Put emergency brake on to disable daytime running lights (this step is required!)
5. Make sure all doors trunk and hood are closed leave driver window down and reach in threw window
6. Try to start. If it doesn't start, leave the key in the on position for 10 min on 97-03 cars and 15 min for 04 and newer cars. The security light should turn off after this amount of time.
7. Turn off ignition for 3 seconds
8. Try and start the car. It probably won't start. Repeat step 5 two more times.
9. If this doesn't work disconnect battery for 5 seconds and then try and start the car.

If that doesn’t work, try this one:

1. Disconnect battery for 10 sec.
2. Reconnect battery
3. Turn key to ON position
4. Do not try to start vehicle, just quickly click to RUN position to engage security light
5. Let vehicle sit with key ON for 35 min.
6. Attempt to crank vehicle. Once vehicle is running, the security light may still be on
7. If security light is still on, turn key to OFF position for 5 sec.
8. Turn key to ON position and security light should turn off
9. Start vehicle and enjoy new PCM

And if that doesnt work, some have had this one work:

1. Try to start the vehicle.
2. Turn ignition to OFF for 10 seconds.
3. Turn ON (NOT START) the ignition (using a black Master Pass-Key III key, not a gray Valet key).
4. Observe the SECURITY telltale on the dashboard. After approximately ten minutes it should turn off for the first time.
5. Turn OFF the ignition and wait for ten seconds.
6. Turn ON (NOT START) the ignition (using a black Master Pass-Key III key, not a gray Valet key).
7. Observe the SECURITY telltale on the dashboard. After approximately ten minutes it should turn off for the second time.
8. Turn OFF the ignition and wait for ten seconds.
9. Turn ON (NOT START) the ignition (using a black Master Pass-Key III key, not a gray Valet key).
10. Observe the SECURITY telltale on the dashboard. After approximately ten minutes it should turn off for the third time.
11. Turn OFF the ignition and wait for ten seconds.
12. Start the vehicle.

Notes: If your car starts at any time and stays running, you are done. If your car starts and dies, try step 9. If it dies after 2 seconds after you have done these steps, you either have a bad FP resistor or the security setting in your PCM is wrong and it will need an update. Security relearn procedure will not work with the valet key!

Dam20735 02-04-2013 09:17 PM

I tried all of that an I even had it sitting on a battery charger while I was doing it is there any other way to go about this

Jomao_o 02-04-2013 09:32 PM

I did the 2nd option, let it sit for 35 minutes, because the 1st option would not work at all.

Make sure the key is in the right position, be patient.

Dam20735 02-05-2013 04:51 AM

Do I turn it to the on position or do I turn it so that the whole dash is on


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