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Thread: Anyone Familiar with 16196388 ecm?

  1. #1
    Carb and Points!
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    Anyone Familiar with 16196388 ecm?

    Hi, I've been lurking and hunting around trying to decide how to control this 7.0 tall deck I have. The emissions sticker says 1995, but the original truck was sold in 1996. I'm thinking this is some weird stop-gap that GM did, because there was what looked like an OBD2 connector, but nothing I borrowed could read it. I can't find any pin out info, or anything else on it for that matter. What say you? Throw it away and get a 1227747 to learn on? (PS. I'm a total newb to computers if you couldn't already tell). I'm not trying for any earth shattering tuning, I just want it to run right and get rid of some of the tbi characteristics that drive me crazy. This will probably go into a coe car hauler in relatively stock form, except for the exhaust system. Any helpful opinions much appreciated. Thanks!

  2. #2
    Fuel Injected!
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    Out of pure curiosity, I would like to read that file. I believe that is a 27256 memcal similar to what is used in a '7060 pcm from a 7L LR0 series engine https://www.gmpartsgiant.com/parts/g...-12532427.html
    Interestingly enough, used well into the obd2 age but in large trucks so maybe that is why it has an obd2 connector and should use pin 9 of the obd2 connector, then would be serial aldl like a '95 LT1 type obd2 connector but really still obd1.
    Where are you located?
    -Carl

  3. #3
    Carb and Points!
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    I'm in California. Interesting about the 16147060, I hadn't discovered that number yet. Looks like something I can find pinouts for. This is an Lr0 engine. I'll go out and look at the chip in a few minutes. The letter code is BNKB.

  4. #4
    Carb and Points!
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    I'm not really sure how to identify chips, but.....the sticker says B621 BNKB 3393 and the tiny writing on the chip says.....014B 5C24 32500 B9526AB. It has 24 pins.

  5. #5
    Fuel Injected!
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    I'm in Fresno. I think that has a 2732 chip which is 24pin. Here's a screenshot of some info I have. I've only worked on one of those and it's been a while back. Interesting governor controlled TBI unit.
    Attached Images Attached Images
    -Carl

  6. #6
    Fuel Injected! PlayingWithTBI's Avatar
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    Here's a link to a list of GM ECUs, it doesn't have your 6388 listed but, just about everyone else. Thought maybe it would be of interest to someone?

    https://xtronics.com/wiki/GM_ECU_eproms.html

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