OBD-II PCM's interchangable for 96-97 LT1?
11-18-2013, 04:47 PM
#1
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Location: Lenexa, KS
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OBD-II PCM's interchangable for 96-97 LT1?
I was wondering if I could run a '96 PCM in my '97 LT1 without any issues. Also, if the PCM was tuned for a similar setup (M6, 3.42, LT headers, !emissions) that matches mine would there be any concerns there?
I've only messed with tuning with EFI live, I know if you do a PCM swap on my truck you would have to perform crank re-learn and security re-learn.
I've only messed with tuning with EFI live, I know if you do a PCM swap on my truck you would have to perform crank re-learn and security re-learn.
11-25-2013, 06:00 PM
#4
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Re: OBD-II PCM's interchangable for 96-97 LT1?
Both the 96 and 97 are OBD-2. The wiring diagrams are essentially identical. But I looked around and couldn't find any confirmation that the PCM's are or are not interchangeable.
11-25-2013, 08:18 PM
#5
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Location: Kernersville, NC
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Re: OBD-II PCM's interchangable for 96-97 LT1?
I'm not sure if they are interchangeable either, but they do have different part numbers in the GM parts manual(16214399 = '96 and 16242921 = '97). I went to look at my spare PCM in the garage and it matches the '96 part number in the parts manual. If I recall(it's been several years), I think I sent PCMforless a '97 model PCM and they exchanged it for a '96 for me when I purchased programming from them.
The 94 and 95's are the same parts numbers and the 93 is different as well.
I would bet that they are not interchangeable.
The 94 and 95's are the same parts numbers and the 93 is different as well.
I would bet that they are not interchangeable.
Last edited by ACE1252; 11-25-2013 at 08:24 PM.
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