2001 Grand Prix ECU issue Please HELP>?

chrissbee77 · 02-20-2008, 06:21 PM

This is my firt posting but i was told this is the place to go for answers. I have a 2001 grand prix gt 3.8 not supercharged. How do i reset the ECU i have already pulled the battery cables and left them off it still has not been reset pontiac told me there was a procedure to do it but they wanted $$$$

I appreciate the advice.

BNaylor · 02-20-2008, 06:35 PM

How long did you leave the battery cables off? The dealer will do a complete PCM (ECU) reset with a Tech II scan tool which is the preferred method.

We have another field expedient PCM reset procedure posted so let me know if you would like to try it.

chrissbee77 · 02-20-2008, 06:51 PM

How do i do the method your are talking about thanks for the quick reply

BNaylor · 02-20-2008, 10:58 PM

Just to clarify if you are resetting the PCM to clear a SES/CEL light then any decent odb-ii scanner can be used. But in the meantime you can refer to this thread at the link below which has the procedure I mentioned. Pay close attention to which battery cable is removed and follow each step exactly. See Post #8. No guarantee it will work on your year/model but worth a try.

Click here

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