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Removal Procedure

Turn OFF the ignition.

Fig 1: View Of MAP Sensor Electrical Connector

Courtesy of GENERAL MOTORS CORP.

Disconnect the manifold absolute pressure (MAP) sensor electrical connector.

Fig 2: View Of MAP Sensor & Retainer

Courtesy of GENERAL MOTORS CORP.

Press the retainer locking tabs inward, then pull the retainer (1) up to remove it.
Remove the MAP sensor (2).
Inspect the MAP sensor seal for damage, and replace as necessary.