Looks like the missing link was the ABS system. I started with JeepsAndGuns' edit of Mark Mansur's $8D-1227730.ADX. James93LT1 sent me his ADX which was for a different datastream but it contained...

I was never a Corvette guy before, always rode my Kawasaki's instead. I took one for a test drive on a lark and I was hooked. It is the closest thing to a race car that I ever drove. I picked up a...

Uh oh, it's not consistent. I only got two successful connections out of 30-ish connection attempts. I tried all different combos of fire up the car with all cables unplugged, start-shutdown-start...

Success! A115.ADX works! The car must be running before you connect the ALDL. Unfortunately I don't have enough time right now to dig into it further and try out the other ADX's but hopefully I...

For what it's worth the Mode 8 Disable Comms Send bytes are the same for both A111.ADX and A115.ADX, both are 0xF1 0x56 0x09 0xB0. So for my test this afternoon I'll be trying out the A115.ADX and...

I'm trying my darndest. I'm a PC Network Admin by day, fumbling tuner by night. If push comes to shove I can slap a wireless range extender onto my network to cover the garage and can do a...

Looking forward to trying out those adx's, I don't get home from work until 4:30 EST and will post up results then. Don't know if it matters but 90/91 base model vettes run L98 engines, the LT-1...

FWIW I spied on the serial port and with no datalogging requests in the system I found this junk (in hex) flying around the ALDL
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No love with the commands from your $8E copied into my $8D mask. I also tried changing the size of the reply window from 66 bytes to 67 bytes but I still get wildly fluctuating values on the PC. I...

Thanks for the replies, I'm going to copy the commands from your $8E.ADX to my $8D mask and I'll post up my results.

Anybody know what hex to send to get the CCM and the Dash to quit sending crap on the ALDL line? I'm trying to datalog with Tunerpro v5 and I'm getting lots of garbage in the datastream. I know...