Cavalier 1996 ECU model number?

[stanfiel]

Hello,

I have a 1996 Cavalier sedan, 2.2L, Manual, VIN4.
The ECU serial number on my car is 16215830.

This ECU has given me intermitent problems, serious, believe me, troubleshooting has convinced me of a faulty ECU.

I have bought (e-bay...) an used ECU with serial number 16231851. Does anybody knows if I can use this ECU on my car?

Would it be enough if I just swap my original EPROM (MEM-CAL) module?

I would appreciate any information on this.

Many thanks and best regards.

Diego

[richtazz]

gm# 16215830 supercedes 16231851, so they should be interchangeable. you will have to have it flashed to your vehicle for it to work, because these units are a PCM, not an ECM, and have no interchangeable prom.

[stanfiel]

Thank you very much for your reply to my post.

I have a question.

Both this computers have a small plug-in module under a small aluminun lid. I assumed this is the EPROM or MEM-CAL module.

If I just put the original plug-in module on the new computer, would it be enough? Or should I have to do an additional flash operation?

This flashing, could be done with a scan-tool?

Many thanks again for sharing your expertise.

Diego

Originally Posted by richtazz

gm# 16215830 supercedes 16231851, so they should be interchangeable. you will have to have it flashed to your vehicle for it to work, because these units are a PCM, not an ECM, and have no interchangeable prom.

[richtazz]

I'm not sure if a flashable Prom can be removed from one PCM to another without being reprogrammed. I say give it a try, and see what happens.

[stanfiel]

To all who read this thread:

I have tried replacing the plug-in MEM-CAL or EPROM module on the new computer and it did not work.

Fortunately I did not ruin anything.

Regards.

Diego