GM Trouble codes, Help Please

[soren]

>1.  What the heck is the EAS????  I can't find it documented
>anywhere!

    Got me.  The trouble code description in your shop manual should tell
you, though.

>2.  Where can I find more info about Quad Data Module (QDM)
>number 1?

    That's the "Quad Driver Module".  It is the part of the ECM that
actually controls outputs to such things as torque converter clutch, EGR
valve, etc.   There are several QDMs, each controlling four outputs (hence
the "Quad").  Sections 6 and 8 of your shop manual should contain the
information you are looking for, especially the pages devoted to those
particular trouble codes.

>3.  I'm suspicious about the Vehicle Speed Sensor.  The '95
>wiring harness connector didn't mate with the VSS on the
>'96 transmission.  I did wire them together without the plugs.
>Are these different?

    That would probably explain the "4k pulses per mile" code you are
getting.   The 96 B-body VSS may have different signal outputs than the 95
F-body.

  Anyone know a way to
>'repair' fouled/plugged/bad injectors????


    A cleaning/blueprinting may take care of it unless they are way too far
gone.


    I think it may be a pretty big task to get the OBDII engine to work well
with an unmodified non-OBDII computer.  I would suspect that many of the
sensors and output devices would have different values between the two
systems.

Soren Rounds