Assuming it's one of those cars that has an OBD I system but OBD II
connector, you'd need a GM OBD I scan tool/software, and then a proper
adapter cable to connect into the diagnostic connector. Not all scan
tools/software is capable of reading ABS codes, either.
You might be able to get the dealer or a mechanic to pull codes for you, if
you're friendly with them at least. Wheel speed sensors (or their wiring
harnesses) seem to be the most common trouble spots on the ABS systems, but
without the codes you can't be sure if that's the case, or if so, which
Robert Hancock Saskatoon, SK, Canada
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Not really an expert here but if it is a OBDI just with OBDII connector,
you should be able to read the codes by shorting certain pins, and
looking at the check engine light. Which pins, not sure but do some more
But if there was software out there too pull the codes for OBDI, you
would probably need some hardware too...
I think most of nonprofessional (cheap) solutions out there for reading
OBDII, will not do ABS codes, just Powertrain codes
I can't find anything for the PalmOS, but I posted the question on the
DYI-EFI GMECM mailing list. If you or someone you know can write Palm
software it shouldn't be too hard to read the stream. You would have to
build the interface that "Bill" and I built, shown here:
http://pweb.de.uu.net/pr-meyer.h/aldl.htm . You will also have to get the
stream definition file here: ftp://ftp.diy-efi.org/pub/gmecm/ALDLstuff.zip .
Your file is "A260.ds" if you have the 4T60E or "A261.ds" if you have the
If automakers weren't interested in their dealers getting $80 diagnostic
fees for hooking cars up to their scanners, they could easily have a small
readout on the dash so you could see the # of the trouble code and look it
up in the owner's manual and possibly fix it yourself.
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