Pcm
Thread Starter
Le Mans Master
Joined: Oct 2004
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From: Parkland Florida
Pcm
I wanted to find out who sells them and how much? I may do the mail order from LG and yes I can send mine but in case I wanted to have my stock one to put back in the car I wanted to know. Thanks in advance.
Side note I know makes more sense to tune at install but it is a good deal or atleast I think so.
Side note I know makes more sense to tune at install but it is a good deal or atleast I think so.
Race Director
Joined: Oct 2004
Posts: 10,089
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Originally Posted by Triple Black C6
I wanted to find out who sells them and how much? I may do the mail order from LG and yes I can send mine but in case I wanted to have my stock one to put back in the car I wanted to know. Thanks in advance.
Side note I know makes more sense to tune at install but it is a good deal or atleast I think so.
Side note I know makes more sense to tune at install but it is a good deal or atleast I think so.
There's a learn procedure which has to be done between the ECM and the BCM, if either is replaced, in order to allow the car to start, part of the car security system. Your dealer can do this with his Tech II.
Note, you may not be able to get a used ECM from another car to agree with the BCM on the car's VIN, so using a new ECM is the way to go.
Last edited by shopdog; Oct 1, 2005 at 06:17 PM.
Thread Starter
Le Mans Master
Joined: Oct 2004
Posts: 6,590
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From: Parkland Florida
Originally Posted by shopdog
The C6 doesn't have a PCM. It does have an ECM, and if auto a TCM too. Your Chevy parts counter is the source. They are surprisingly inexpensive.
There's a learn procedure which has to be done between the ECM and the BCM, if either is replaced, in order to allow the car to start, part of the car security system. Your dealer can do this with his Tech II.
Note, you may not be able to get a used ECM from another car to agree with the BCM on the car's VIN, so using a new ECM is the way to go.
There's a learn procedure which has to be done between the ECM and the BCM, if either is replaced, in order to allow the car to start, part of the car security system. Your dealer can do this with his Tech II.
Note, you may not be able to get a used ECM from another car to agree with the BCM on the car's VIN, so using a new ECM is the way to go.
Race Director
Joined: Oct 2004
Posts: 10,089
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Originally Posted by Triple Black C6
Thanks shopdog but are you sure? Lou at LG emailed me to send him my PCM and he will program it and send it back. I didn't know it was specfic to my car because I thought I read someone bought one and swapped out.
I'm sure the C6 doesn't have a PCM. As I said, it has an ECM (Engine Control Module), and if automatic equipped, a TCM (Transmission Control Module). Older cars just had one computer called a PCM (Powertrain Control Module) which performed both functions. Not the C6.
The car's security system is implemented by negotiations between the BCM (Body Control Module) and the ECM. Among other things, they have to agree on the Vehicle's VIN. Once that's programmed the first time, the dealer can't change it with his Tech II. The shop manual says you have to use a new module for this initial learn mode. There may be a way around this, but I haven't heard anything about it.
Race Director
Joined: Mar 2005
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From: Austin Texas
ECM = Engine Control Module, large computer box in the passenger side wheel well. No VIN programing but a learning process program from a GM Tech 2 Tool needed?
BCM = Body control Module, small computer box in the passenger side foot box (inside the car). Needs to have VIN programed in by GM Tech 2 Tool?
PCM = Powertrain Control Module, can't find the term in the Factoy Manual, I do know that Daimler/Chrysler uses the term PCM for the same computer that GM calls the ECM.
BCM = Body control Module, small computer box in the passenger side foot box (inside the car). Needs to have VIN programed in by GM Tech 2 Tool?
PCM = Powertrain Control Module, can't find the term in the Factoy Manual, I do know that Daimler/Chrysler uses the term PCM for the same computer that GM calls the ECM.
