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Cadillac deville ECM Restore

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alsfixit
Novice

Mar 28, 2010, 4:59 PM

Post #1 of 4 (4068 views)
Cadillac deville ECM Restore Sign In
I need to find out how to reset the ECM Security code on the new ECM that i replaced on my 96 cadillac deville. Anyone who has any info could u plz post me a message.


Sidom
Veteran / Moderator
Sidom profile image

Mar 28, 2010, 5:04 PM

Post #2 of 4 (4064 views)
Re: Cadillac deville ECM Restore Sign In
I'm not sure exactly what you mean.

The newer PCMs are flashed, the older OBD I ones had a removable PROM that transferred to the new one....

Exactly what problem/error are you getting?


alsfixit
Novice

Mar 28, 2010, 5:21 PM

Post #3 of 4 (4062 views)
Re: Cadillac deville ECM Restore Sign In
okthis is what i did... i replaced the ECM. this is what i need help with.

APPLICATION: All OBD-ll(96 and newer) GM vehicles quipped with the PASSLOCK anti thet system.

PROBLEM: Vehicle will not start after the Original ECM has been replaced. (It has been already)

CAUSE: The original ECM has a security code(PASSLOCK) stored in its memory that matches the vehicles instrument panel cluster or security module(if so equipped). the replacement ECM can only recieve the PASSLOCK code after it is installed (I installed it already) in the vehicle and relearn performed on the ECM.

SOLUTION: Because the procedure is vehicle specific, it will be nessar to reference the vehicle service manual for the correct procedure. ( Thing is that I don't have the service manual to find out how to do it).


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 28, 2010, 5:57 PM

Post #4 of 4 (4059 views)
Re: Cadillac deville ECM Restore Sign In
Please don't start duplicate questions. It just serves to confuse everyone. We see all the questions, regardless of the category.

http://autoforums.carjunky.com/Automotive_Repair_C1/General_Discussions_F5/96_cadillac_deville_ECM_restore_PASSLOCK_probs_P69678/



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(This post was edited by Hammer Time on Mar 28, 2010, 5:58 PM)





 
 
 






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