I did finally manage to burn a bin that worked. Just editing the hex did not work. I had to create the flags in the tunerpro xdf, make the change, then save. This updated the checksum and then it...

I did end up reading the chip again as a 64kb and getting the valid results in the other half.

When I attempt to change $900A from $80 to $10 the SES light doesn't do the quick flash on key on,...

My eeprom reader/burner came in. I read both the stock AWBP(in the memcal) and the aftermarket AXXZ on the adapter and got some interesting results. The AXXZ matched up pretty well with all of the...

Thanks for the info 1project2many! Where did you find this? What you said seems to check with what I could see in one of the bins I found, but I'm not sure how I make the changes just yet. I did...

Well, it came back so it is still intermittent. The "DRAC is current sensor" isn't set in the bin, but it sets right after the vehicle starts moving. It's like it looks for a signal and sets it if it...

I decided to pull the PCM out. Once the cover was off, i saw a memcal adapter and chip labeled AXXZ from The Turbo Shop, INC. Removed it and just installed the original AWBP memcal alone and so far...

I have an intermittent issue that come and goes with ignition cycle. When reading live data ($85, A138) if the "DRAC is Current Sensor" = No/Magnetic, then my PCM reads the vehicle speed and the TOSS...

Hello all. Anthony here from Yuma, AZ. I found this site trying to troubleshoot a new to me 1991 Suburban 2500 with shifting issues. It comes and goes with cycling the ignition and causes it to not...