Manifold Absolute Pressure Sensor: Removal

WARNING: This page is about a different car, the 2003 GMC Safari and 2003 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

Turn ignition off. Remove engine cover. See ENGINE COVER under MISCELLANEOUS. Disconnect Manifold Absolute Pressure (MAP) sensor harness connector. MAP sensor is located on top center of engine. See Fig 1 .
Remove MAP sensor from intake manifold by pulling straight up with a slight rocking motion. Remove and discard MAP sensor grommet.

Fig 1: Locating EVAP Canister Purge Solenoid & MAP Sensor

Courtesy of GENERAL MOTORS CORP.