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Where is the cam sensor on a 1993 grand prix 3.1?

The camshaft position sensor (CMP sensor) on a 1993 Pontiac Grand Prix 3.1L is located on the passenger side of the engine, near the front of the cylinder head. It's usually mounted on the timing chain cover. You'll likely see a single-wire connector attached to it.

However, precise location can vary slightly depending on the exact engine configuration. It's best to consult a repair manual specific to your 1993 Grand Prix 3.1L engine for a definitive visual diagram. A Chilton's or Haynes manual would be a good resource. You can also use online resources such as diagrams available through parts websites by searching using your VIN.