Just updated the prior post with the revised file. Give it a try and let me know how it goes, I'm down for at least a couple of weeks.

I have a 411 PCM and I used PCM Hammer to update it to the 2156 OS. I am swapping a Gen 3 5.3 V8 with 4L80 into a Dodge. I would like to segment swap the 4L80 portion since that combo was never sold...

I'm holding on just fine, thanks for the concern. The plus side to this thread was that it has allowed me to learn there is an ignore user feature here. :welcome:

You're welcome. My goal was to provide the info for others to use.

LOL in most threads where I deal with wiring most people say I have too much patience, and they can't put up with electrical problems. My point was of the two that replied, the first cited another...

Tough crowd here. I thought at least one person would appreciate the connector info if nothing else.

The error messages I got had to do with the cable as far as I could tell. I had interface problems with both of my 1995 cars, and then my laptop crapped out (unrelated- power jack). The PCM is not...

Good info, especially for the OBD2 PCMs. My el-cheapo power supply was putting out 12.2V and it worked OK for the two PCMs I read and the one I flashed. Night & day from them being in the car.

I was running into errors trying to read my PCMs using the cable and a laptop, so I got the idea of using a 12V power supply to power the PCM and then making a short interface harness using GM type...

As I look through Tuner Pro, I have revised the spreadsheet to include calcs for CID (larger engine e.g. stroker), ethanol gas, and fan temps (Celsius to Fahrenheit & vice-versa). I also have an info...

I wrote it using Libre Office (free software, similar to Open Office) and saved it as an Excel file. I tried it in Excel 2003 and it worked properly. If typing in 60 yields 6,000, try typing in .6...

I'm not sure how that is addressed in the Tuner Pro program. I just added a calc field to the existing spreadsheet. You should be able to workaround the problem via tweaking the tire size to adjust...

I modified the EE speedometer calibration spreadsheet for the 90's model B/F/Y body GM cars and have attached it. You can input your metric tire size (eg 275/40-17) and it will calc the revs/mile....