HOW TO 99-02 PCM into 97-98 Corvette
12-17-2009, 11:25 AM
#101
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St. Jude Donor '07-'08-'09-'10-'12-'13-'14
Or you can just shut the VATS off alltogether.
Try this first:
BCM/PCM RELEARN PROCEDURE
You will need to conduct the PCM/BCM relearn process. This matches their handshake ID's and allows them to talk to each other.
Do this before you worry about VATS issues:
1. Turn on the key for 11 minutes.
2 Turn off the key for 30 seconds.
3. Repeat 1&2 two more times.
4. Turn on the key for 30 seconds.
The car should start and run with the new BCM. Good luck and report back on your progress.
Shirl
SD Racing Enterprises
Aguila, AZ
Coutersy of MrEracer
This will sync the PCM to the New BCM but all of your RPO options will not be retained. You will need a TECH II to program them into the new BCM.
Bill Curlee
BCM/PCM RELEARN PROCEDURE
You will need to conduct the PCM/BCM relearn process. This matches their handshake ID's and allows them to talk to each other.
Do this before you worry about VATS issues:
1. Turn on the key for 11 minutes.
2 Turn off the key for 30 seconds.
3. Repeat 1&2 two more times.
4. Turn on the key for 30 seconds.
The car should start and run with the new BCM. Good luck and report back on your progress.
Shirl
SD Racing Enterprises
Aguila, AZ
Coutersy of MrEracer
This will sync the PCM to the New BCM but all of your RPO options will not be retained. You will need a TECH II to program them into the new BCM.
Bill Curlee
Chuck CoW
12-17-2009, 11:39 AM
#102
For me, doing the work at my "leisure" in my peronal shop, the benefits of having a 411 PCM to work with over the 97 were well worth the labor (i.e. get the 427 running in 15 min, tuned in < 3 hours as opposed to trying to "hack" a 97 PCM to run my 427
). I can definitely see the point from a business perspective, however, as the labor cost would be just silly.oh, and EFI can definitely do the 97 VIN into the 411 PCM as Chuck mentions above. My car is living proof.
Last edited by TurboBerserker; 12-17-2009 at 11:41 AM.
12-17-2009, 11:45 AM
#103
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St. Jude Donor '07-'08-'09-'10-'12-'13-'14
Just remember that.....
This is true, but I got around the confusion by looking at the circuit numbers, which IIRC are the same no matter what goofy name thing GM did
For me, doing the work at my "leisure" in my peronal shop, the benefits of having a 411 PCM to work with over the 97 were well worth the labor (i.e. get the 427 running in 15 min, tuned in < 3 hours as opposed to trying to "hack" a 97 PCM to run my 427). I can definitely see the point from a business perspective, however, as the labor cost would be just silly.
oh, and EFI can definitely do the 97 VIN into the 411 PCM as Chuck mentions above. My car is living proof.
For me, doing the work at my "leisure" in my peronal shop, the benefits of having a 411 PCM to work with over the 97 were well worth the labor (i.e. get the 427 running in 15 min, tuned in < 3 hours as opposed to trying to "hack" a 97 PCM to run my 427
). I can definitely see the point from a business perspective, however, as the labor cost would be just silly.oh, and EFI can definitely do the 97 VIN into the 411 PCM as Chuck mentions above. My car is living proof.
For injectors, I would call Jon at FIC. You should be able to find him on the forum.
Chuck CoW
12-17-2009, 12:01 PM
#104
What I did was make the FPR truely vacuum referenced by plugging it in to a vacuum source rather than metered air at the bridge and then use a flat IFR (like you see in the 1Mb return fuel system bins in the truck line). Works like a charm 
Last edited by TurboBerserker; 12-17-2009 at 12:08 PM.
04-21-2010, 02:32 PM
#106
Tip about fuel gauge here: http://forums.corvetteforum.com/c5-s...-a-98-pcm.html
post #10
post #10
04-21-2010, 08:00 PM
#108
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Glad it worked out, I was the one who spoke to you on the phone today. You can thank Doug and Tommy for the knowledge tho, i just relayed what they told me. 
Sorry you swapped the sending unit tho.
Sorry you swapped the sending unit tho.
04-21-2010, 08:17 PM
#109
Yea I was getting desperate for a solution, and was about to throw every part I could find at it out of frustration luckily my pocketbook wouldn't allow it. On the bright side I have a good sending unit for sale. 
I am about to go for a drive and fill it the rest of the way up just to be sure, since that was always a time it would fail.
When it comes supercharger time I will be giving ECS a call, customer service to someone that has not even been a customer yet is very rare to find. I havent wanted to take the car on a very long trip just because it bothers me when everything is not working right.
Tell them thanks
Bob
I am about to go for a drive and fill it the rest of the way up just to be sure, since that was always a time it would fail.
When it comes supercharger time I will be giving ECS a call, customer service to someone that has not even been a customer yet is very rare to find. I havent wanted to take the car on a very long trip just because it bothers me when everything is not working right.
Tell them thanks
Bob
05-06-2010, 10:08 PM
#110
Heel & Toe
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2002 pcm into a 1998 corvette
Right, that's what I'm saying -- a conversion harness right at the PCM. All of the pinout information can be had in the right technical manuals.
Of course I don't know how cost effective it would be to make them or where to get the raw materials (connectors) but I am just throwing the idea out there.
Of course I don't know how cost effective it would be to make them or where to get the raw materials (connectors) but I am just throwing the idea out there.
A Mechanic McCelland Performance decided to experiement on my car and changed it .My Car runs but lots of codes, Electric don't work, Check Eng stays on, won't idle with the AC on,left the PCM Loose, I have to tape wires every month, interior lights just come on 1 time a week, etc
If you do it go to the EXPERTS not a local Nut
05-06-2010, 10:10 PM
#111
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2002 pcm into a 1998 corvette
Right, that's what I'm saying -- a conversion harness right at the PCM. All of the pinout information can be had in the right technical manuals.
Of course I don't know how cost effective it would be to make them or where to get the raw materials (connectors) but I am just throwing the idea out there.
Of course I don't know how cost effective it would be to make them or where to get the raw materials (connectors) but I am just throwing the idea out there.
A Mechanic McCelland Performance decided to experiment on my car and changed it .My Car runs but lots of codes, Electric Seats don't work, Check Eng stays on, won't idle with the AC on,left the PCM Loose, I have to tape wires every month, interior lights just come on 1 time a week, etc
I have Twin Turbos, STS, they cost me an extra $10,000 to get them to work properly
If you do it go to the EXPERTS not a local Nut
05-19-2010, 05:07 PM
#112
Need help asap please
I am about to repin my 97 i have a 12200411 pcm my car is a auto. Im not sure if this copmuter is for a auto or a manual will it make a difference. When i program my 97 vin into the new computer wont the old softeware come up. I plan on running 20lbs of boost so i think i really need to do this. Thanks Eric
05-19-2010, 08:12 PM
#114
pin
Ya i will be using hp tuners, is there another way of doing it? I might just stay with the 97 computer and have to trrick it, it will be my tuners job not mine. I am just trying to make it easier on him and also give me a better os.
05-19-2010, 09:12 PM
#115
Just leave whatever VIN is there in it and dont worry about it. If you do not know it that is no big deal either as long as the ECM is good. Since I had never done this before it took me a while but I have no lights or any other problems after the swap. That is thanks to ECS after their tip my fuel guage is fine now.
05-20-2010, 01:55 PM
#116
I am about to repin my 97 i have a 12200411 pcm my car is a auto. Im not sure if this copmuter is for a auto or a manual will it make a difference. When i program my 97 vin into the new computer wont the old softeware come up. I plan on running 20lbs of boost so i think i really need to do this. Thanks Eric
If you're going to boost it, you definitely do NOT want to keep the 97 PCM.
06-14-2012, 11:11 PM
#119
Team Owner
But you should not say you want to or need to get rid of the 97-98 PCM many of us have and do run, safely, Boost at 18 PSI and above on the 97-98 PCM with a 2 BAR MAP Sensor -
The 99+ Up PCM will allow one to run a 3 BAR for additional Boost!
Thanks,Matt
05-30-2015, 08:59 AM
#120
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ASR lost after PCM Upgrade - Fact or Crap?
"There is no need to worry about the fuel gauge, it will work as is. Only the file needs to be changed and the fuel gauge parameters calibrated. The ASR will not work though"
Can anyone confirm (or deny) comment made on another forum about the ASR not working after doing the '98 to '02 conversion.
My PCM is functional, but, for some reason, not allowing ANYONE to read or write to it - so my dreams of getting a decent tune on this thing are 'up the creek' without finding a solution. The '98 to '02 solution looks quite 'do-able', but it would be nice to know for sure if I'm about to lose traction control.
Can anyone confirm (or deny) comment made on another forum about the ASR not working after doing the '98 to '02 conversion.
My PCM is functional, but, for some reason, not allowing ANYONE to read or write to it - so my dreams of getting a decent tune on this thing are 'up the creek' without finding a solution. The '98 to '02 solution looks quite 'do-able', but it would be nice to know for sure if I'm about to lose traction control.