1995 Riviera Obd 1 or 2? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat
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Old 05-05-2007, 01:04 PM   #11
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Originally Posted by samueljackson
can he just look at the obd connector? if its the trapezoid shape, then its obd 2. if its the aldl rectangle with the two notches at the top, the obd 1.

but how do u know if its one of the half n half 1.5s ?
Not the case for 94-95 GM'*. What we call "OBD1.5" is just that. It uses for the most part OBD1 programming except for the ability to jumper terminals and self-diagnose. And they DO use OBD2 connectors, however an OBD2 code reader can't read from it.
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