But can it read an OBD1 SUZUKI? My guess is NO!
Suzuki Sidekick ODBC I is usually the same as GM. A buddy worked at a Chevy dealership and used the GM ODBC I reader when setting up his 16v conversion.
Read my original post - it does point out that the only places you're likely to find a reader that can read OBD1 Suzuki is Suzuki & GM dealerships - and, unless you have a buddy who works there, they usually charge a hefty fee to scan those codes. I know of only two readers that can do the job - a Vectronix Tech 1 or it's replacement, the Tech 2, and even with those, you need the correct EPROM cartridge for the vehicle you want to scan - around a $3500 investement, which is why most shops don't have them, and those that do, charge you to use them.
Now if any one of you wants to show me or even sell me a reasonably priced (ie. consumer) reader than I can plug into my '98 OBD1 2.0 Grand Vitara and get the codes, set the ignition timing and freeze frame etc., I'm ready & waiting, credit card in hand.
FWIW - I already have an ELM-327 adapter & software which does not talk to it, as well as an ALDL interface which does, and I can see quite a few of the parameters - rpms, speed, injector pulsewidth, coolant temp, air temp - but no codes (not yet anyway) and no ignition timing.