Mechanics

WHERE IS DIAGNOSTIC PORT ON 91 OLDS SUPREME 3.1

1991 Oldsmobile Cutlass • 125,000 miles

Looking for port to hook scanner to find codes
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Lmmowerman
December 13, 2011.



I believe under the dash, to the left of the steering column, by the park brake.

Factoryjack
Dec 13, 2011.