where is diagnostic port on 91 olds cutlass supreme 3.1

1991 OLDSMOBILE CUTLASS
125,000 MILES
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LMMOWERMAN
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  • 2 POSTS
looking for port to hook scanner to find codes
Dec 13, 2011 at 2:25 AM
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FACTORYJACK
  • ✓ASE Certified Mechanic
  • 4,159 POSTS
  • ASE Certified Mechanic
I believe under the dash, to the left of the steering column, by the park brake.
Dec 13, 2011 at 2:30 AM
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