6395 7427 8625 Manual Trans Calibration Listing

[JeepsAndGuns]

Manual transmission trucks with 5.0 / 5.7 came with a C3 ECM. There are three numbers, 16156480, 16196396 or 16171199.

BJYN is not a manual transmission calibration. BJYN is a G van calibration and G vans were not available with a manual transmission. The database has M for manual, A for auto, or sometimes it has nothing at all. GM's own software used to show "no listing" calibrations as "ALL" for transmission type but I worked in the dealership and I knew for a fact it was wrong sometimes. So when I wrote BCCFind I made sure it showed "All / No Listing" to indicate there was no specific data for trans type. The final check of course is to look at the cal in Tunerpro and see what options are selected. Greg reported the "manual trans" bit was not set on the trans he found which confirms auto trans.

16156930 PCM superceded to 16197427 with a brief time as a 16196395. GM did a flurrry of part number changes early on and IIRC they had a bulletin out regarding the changes. When there are a lot of quick changes like that I always suspected they'd found internal problems and worked them out during production or had a major vendor change and wanted to track the parts. But you did raise a good point. I need to go back through my search using the 6930 part number to see what comes up.

What code mask did those manual trans ecm's use, $0D?

So your saying the manual trans truck started out with 16156480, 16196396, 16171199, or 16156930, and then switched to the 16196395, and then finally all (manual and auto) switched to using the 7427?

[gregs78cam]

What I find interesting is that the "Stall Saver Activation Thresholds" bit is not set, and the "TCC Only" bit is set.

[EagleMark]

Yes they are both $OD.

But manual bit is set! May use something completly differant for Stall saver. Later when I find time..... been an issue lately.... I want to compare it to auto and see how many differences I can find to IAC logic, decel settings and such...

Manual bit is set so who knows what why TCC only is set, maybe over ride... who cares I got an $OD manual bin!

I could always set it identical to $OE manual bin that needs changes from 7.4L to 5.7L, this one needs to go from 4.3L to 5.7L. The other one is listed as 5.7L all trans and it may be best start with manual bit checked?

[gregs78cam]

Just remember to compare them both from V6s

Yes they are both $OD.

.... I want to compare it to auto and see how many differences I can find to IAC logic, decel settings and such...

[93V8S10]

Need to check for CPI as well.

[Philalbar1]

So I've been having trouble getting my 1993 (8625) S10 with a 4.3 to run properly now that I've swapped a manual trans from a 92 into it. I got Tunerpro and an AutoProm, and have done a little digging, but haven't been able to get a bin that works properly. Everything seems to run okay in the short drives I've taken the truck on, but it doesn't like to idle down between shifts, and going downhill it will actually speed up. After coming to a stop for a couple seconds, it idles back down to 750 rpm, but not before. I have rebuilt the throttle body, and managed to get the e-fan coding working on my programmed chip, but there are way too many options in tunerpro that I don't understand. I'm hoping someone can give me some advice on where to look, or what to do. Thanks in advance!
~Phil

[57 Handyman]

Philalbar1, I have '92 S-10 4x4 with slightly modified 4.3L and 700r4. I also run PCM 8625. When you say you got your e-fan coding working, do you mean shutting down your fans at highway speeds? I want to know exactly what you did to reprogram your chip to get the e-fan setup running. Would you mind sharing your BIN? Thanks in advance.

My e-fan setup consists of Intrepid fans and two relays. Fan #1 is tied to the AC and the relay is tapped into AC clutch GRN wire. Fan #2 is tied to engine temp and the relay tied to a engine temp sensor.