Can anyone recommend software for the 3.3l gm cars from 1989 to 1993 using the obd 1 computer system. I have the usb cable and have used freescan. It works, but gives you little data. I want to see things like sensors live and be able to download history. What is available for free and for sale. I don't mind paying for it, as I have 3 of these cars. Thanks, Ken

TunerPro RT.

i probably already built the definition for those cars too.

RobertISaar, I have a 90 buick, 91 and 92 olds cutlass ciera with 3.3l and ecm #1228706. I don't see definitions for this unit in the list on the Tunerpro site. Is there a step by step tutorial on how to use tunerpro. Thanks, Ken

http://tunerpro.net/gmOBDI.htm

search for "LG7", that'* the RPO of your motor, and those definitions should work, i believe there are two that apply, 1 for 91-93, another for 89-90.

http://www.pontiac-interface.de/content/view/7/8/

Hello
Thanks to all the friends for the good stuff
I want to say something and I need your helps
please guide me
my vehicle is oldsmobile
Engine model: cutlass ciera sl0 3.1L 1990
KM sensor: 15 gears
Motor platform : AB
EGR Status: not
ECU Model: ATBF
Memory code: 1227730
This engine model was presented to the Middle East
The oxygen sensor is inactive (the oxygen sensor'* location is embedded), because that time was gasoline, had a lead
And activated at ECU when the engine temperature reaches 360 degrees, so it'* disabled.
That'* why the fuel consumption of the car is very high
Now, can you EDIT the ECU memory stick with OBD device and define the engine temperature for the oxygen sensor to 80 degrees and close the loop and Update other settings? (Here, OBD device for older GM is not binary.)
Can you do this?
I add, this model Engine is similar to the Oldsmobile Supreme car.