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Swapping engine can I use the PCM in original engine

Tiny
PATW54
  • MEMBER
  • 1996 GMC JIMMY
  • 4.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 191,750 MILES
My question is, I swapping my on my vehicle listed above 4.3L vortec, and the motor I'm putting in is the same as the one I'm taking out. I'm just wondering if I have to buy another PCM or can I keep my new one that I have in my vehicle now? My Vin number is W and the other motor is a X. Can they Interchange since they both are 4.3L's the other motor came out of a 1997 S-10 and my jimmy is a 1996. Hate to buy another PCM if I don't have to.
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Sunday, October 20th, 2019 AT 10:24 PM

17 Replies

Tiny
PATW54
  • MEMBER
  • 15 POSTS
  • 1996 GMC JIMMY
  • 4.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 191,700 MILES
Will a PCM with a W code work on a vehicle with X code?
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Monday, October 21st, 2019 AT 12:56 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Hello again.

As I asked two times before, I need the number off the ECM. When you provide that, I will be able to give you the answer. There are a couple of different numbers and I need to see the number.

Roy
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Monday, October 21st, 2019 AT 12:56 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Let me know if I can help you further after you provide the number for me.

Roy
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Monday, October 21st, 2019 AT 5:28 PM
Tiny
PATW54
  • MEMBER
  • 15 POSTS
It has been raining here today so wasn't out working on my vehicle. I will get the numbers as soon as I can.
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Monday, October 21st, 2019 AT 5:42 PM
Tiny
PATW54
  • MEMBER
  • 15 POSTS
I will get the numbers as soon as I can.
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Monday, October 21st, 2019 AT 5:43 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good, then we can come to a conclusion.

Roy
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Monday, October 21st, 2019 AT 5:44 PM
Tiny
PATW54
  • MEMBER
  • 15 POSTS
  • 1996 GMC JIMMY
  • 4.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 191,700 MILES
I have the numbers for the PCM'S. My new PCM for my Jimmy, I bought a new PCM for the Jimmy because I think my old one is shot. But I have that number too. Plus what numbers I could read on my parts vehicle, some numbers were to far faded to see. So I hope one these numbers is compatible with my parts car besides the number. Anyway here are the numbers new PCM number is: 86CCSC9072446LZT and top number is: 16258815. My parts car number is: 868kcx96.80. Top number I believe is: 16200785 I have a service number I found too: 16244210 And a BKCX on it. That was all the numbers I could read on a very faded paper. Now for my old PCM, service number is: 16244.0 and 868kcx9661700cqr and some other numbers: (16200785) 1ga1269230 and 96 1 280693. The top number and the bottom number are W code and the middle number is X. If my two numbers won't work what can I do to make the X model to work on my W model? Hope you have a good word for me. When you get back with me. Thank you. Mr. Patrick Walburn both vehicle are 1996's
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Wednesday, October 23rd, 2019 AT 11:02 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Hello again Pat.

Okay, the number you need for your car 16208546. That will work for your truck.

Remember to change the PROM and the coil pack from the old one that was original in the truck with the X VIN.

Roy
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Wednesday, October 23rd, 2019 AT 11:02 AM (Merged)
Tiny
PATW54
  • MEMBER
  • 15 POSTS
So your telling me I need to buy another PCM with that number on it? And where is the prom located and the coil pack, the coil pack that starts your vehicle? If that is it that was missing on my parts car. Or is it something different.
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Thursday, October 24th, 2019 AT 10:08 AM
Tiny
PATW54
  • MEMBER
  • 15 POSTS
Do I need to buy another PCM?
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Thursday, October 24th, 2019 AT 10:13 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You need that number PCM I listed and you need to remove the PROM and cal Pac, sorry, it is not the coil pack.

Those are internal chips in the PCM cover. They contain all the information for the engine and performance.

Roy
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Thursday, October 24th, 2019 AT 10:19 AM
Tiny
PATW54
  • MEMBER
  • 15 POSTS
  • 1996 GMC JIMMY
  • 4.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 191,700 MILES
I know you sent me information about my PCM's on my vehicley. But for some reason, I can't find that information now.I sent you the numbers. Off the 3 PCM's that I had. Well I was wondering if you could resend that information to me again. Please! I believe Facebook has deleted that information you sent to me.
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Thursday, October 24th, 2019 AT 2:42 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Pat,

I posted it on the other post you were working with. I just responded to it.

Roy
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Thursday, October 24th, 2019 AT 2:42 PM (Merged)
Tiny
PATW54
  • MEMBER
  • 15 POSTS
So your telling me I need another PCM with that number you sent me and take those chips from old com and put it in the new one that I got to find. Is that correct? Now where do I find a PCM with that number?
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Thursday, October 24th, 2019 AT 2:42 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
That is correct. You can go to a parts store and give them the numbers and they should be able to get the correct one with that service number.

Roy
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Thursday, October 24th, 2019 AT 2:42 PM (Merged)
Tiny
PATW54
  • MEMBER
  • 15 POSTS
Okay, thank you. Could I use one out of scrap vehicle if it has that number on it?
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Thursday, October 24th, 2019 AT 2:42 PM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Yes you can.

Roy
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Thursday, October 24th, 2019 AT 2:42 PM (Merged)

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