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
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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