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2002 Pontiac Montana steering column was smashed due to

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trying to start van without...
2002 Pontiac Montana steering column was smashed due to trying to start van without key I replaced whole steering column with a used one and cannot get van to start with the key however if I jump the starter solenoid the van will start and run for a few seconds and then shut off, I try the 10 minute key relearn procedure and still wont relearn it what would happen if I bought a junkyard ecm and put it into my van ?
Submitted: 2 months ago.Category: Pontiac
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Answered in 3 minutes by:
12/17/2017
Pontiac Mechanic: kalamykid, Shop Owner/ Tech replied 2 months ago
kalamykid
kalamykid, Shop Owner/ Tech
Category: Pontiac
Satisfied Customers: 4,952
Experience: I HAVE OWNED MY OWN SHOP FOR OVER THREE YEARS. I HAVE THE TOOLS AND SOFTWARE TO ANSWERE ALMOST ANY Q
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You do not need to replace the ecm, you have to do a 30 minute relearn, here are the steps.

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Pontiac Mechanic: kalamykid, Shop Owner/ Tech replied 2 months ago

Do you still have the old key? You will need to use the transponder from the old key to get it to start as well.

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Customer reply replied 2 months ago
I still have the old key ... I tried the 3p min relearn a couple different times and it doesn't work ... what doesn't make sense is when I turn the key to the on position the only light that comes in is the service engine soon light ... wait 10 secs then everything else turns on same thing when I turn the key off and pull the key out on thing that goes off right away is the service engine soon light
Pontiac Mechanic: kalamykid, Shop Owner/ Tech replied 2 months ago

The problem is the new key that cam with the column has a transponder in it that the bcm does not recognize. You need to remove the plastic on the top of the new key, and then tape the old key to the new key so the exciter can see only the old transponder.

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Pontiac Mechanic: kalamykid, Shop Owner/ Tech replied 2 months ago

Do not break the plastic off of your old key or you will damage the transponder.

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Customer reply replied 2 months ago
The plastic on the old key is already half broken .. but I guess it will still work ? So when I tape the old key to the new key do I still need to do the 30 min relearn ? AND will I always have to keep the old key taped the the new one ?
Pontiac Mechanic: kalamykid, Shop Owner/ Tech replied 2 months ago

Yes you will have to do the relearn I posted. As for the key, you can take it to a lock smith and have them make you two new keys, but yes till you have new keys made, you will have to keep the key taped to it. Now another option is you can have the lock smith recode the lock cylinder to your old key o you can still use just the old key in the new lock.

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Customer reply replied 2 months ago
I have a parts van ... would it just be easier to use rhe ecm out of the parts van in the van I'm trying to getto run ?
Pontiac Mechanic: kalamykid, Shop Owner/ Tech replied 2 months ago

NO. The pcm out of the other van will not have the vin number encoded into it and the van will not recognize it. Now you can try this and see if it will work, break the plastic off of the new key, then tape the old key as close to the lock cylinder as you can and see if the exciter can pick it up.

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Customer reply replied 2 months ago
Trying to do the relearn now aND I've left the key on for 20 mind avd rge security light still has yet to go out
Pontiac Mechanic: kalamykid, Shop Owner/ Tech replied 2 months ago

Do you have the new transponder removed form the new key?

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Customer reply replied 2 months ago
it is removed and no where near the van I just taped the old key to the new one like u said
Pontiac Mechanic: kalamykid, Shop Owner/ Tech replied 2 months ago

Did you try to start it with the old transponder on the new key?

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Pontiac Mechanic: kalamykid, Shop Owner/ Tech replied 2 months ago

Do this for me. Disconnect the battery for 10 minutes. and then try the relearn again. Make sure to go from off straight to start, then let the key go back to run and see what the security light does.

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Customer reply replied 2 months ago
Same thing security light doesn't go out
Pontiac Mechanic: kalamykid, Shop Owner/ Tech replied 2 months ago

Are yu sure you have everything plugged up under the column?

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Customer reply replied 2 months ago
everything is plugged in
Pontiac Mechanic: kalamykid, Shop Owner/ Tech replied 2 months ago

Do you have the cover off around the column?

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Customer reply replied 2 months ago
Only thing that isn't plugged in is the yellow air bag wire ... and top part is on bottom part is off due it its smashed to pieces
Pontiac Mechanic: kalamykid, Shop Owner/ Tech replied 2 months ago

Can you post a pic of the column so I can see around the ignition lock cylinder please?

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Customer reply replied 2 months ago
Do u want me to remove the top cover to take a pic?
Pontiac Mechanic: kalamykid, Shop Owner/ Tech replied 2 months ago

The bottom being off should be good enough.

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Customer reply replied 2 months ago
Here are a few pics and a videos showing howing how the dash lights are delay while gray plug is plugged in
20171217_165844.jpg2017121...jpg20171217_165151.jpg2017121...jpg20171217_165054.jpg2017121...jpg20171217_165146.jpg2017121...jpg
Pontiac Mechanic: kalamykid, Shop Owner/ Tech replied 2 months ago

Can you tape the old key to the black plastic box that sits over the lock cylinder and try the relearn again, but this time disconnect the battery for 10 minutes first, so the bcm can clear its memory?

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Customer reply replied 2 months ago
Just tape it on top of it ?
Pontiac Mechanic: kalamykid, Shop Owner/ Tech replied 2 months ago

To the flat part on the side.

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Pontiac Mechanic: kalamykid, Shop Owner/ Tech replied 2 months ago

Just above the sticker.

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Customer reply replied 2 months ago
OK I will try that and get back to u
Pontiac Mechanic: kalamykid, Shop Owner/ Tech replied 2 months ago

Ok

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