GM 12615135
M.A.P. Sensor

First off, turn OFF the ignition to replace the Manifold Absolute Pressure (MAP) sensor. You will now disconnect the MAP sensor from the bracket by unscrewing the screws that hold it in place, then you will remove the MAP sensor electric connector and the MAP inlet vacuum hose. Following the removal of the MAP sensor from the bracket, secure the new MAP sensor onto the bracket and rest the MAP inlet vacuum hose then connect the MAP sensor electrical connector. Finally, drive the screws and tighten them to 3 N.m (27 lb in), in accordance with the rules of Fastener Notice in Service Precautions.

Before you can replace the manifold absolute pressure (MAP) sensor you need to unscrew it and detach its electrical connector while removing the hose and finally unlocking it from the bracket. Begin by placing the MAP sensor onto its bracket after you connect the vacuum hose to the sensor and hook up the electrical connector then finalize by tightening the MAP sensor screws. Use 3 N.m (27 lb in) torque while tightening the screws with caution when following Fastener Notice in Service Precautions.

Begin by performing a turn-off of the ignition before you remove the engine sight shield. The first step is to disconnect the electrical connector of the manifold absolute pressure sensor before removing it off its bracket. Check for leaks on MAP sensor vacuum line fittings (1,2) after removing the vacuum line fitting from the sensor's bottom. Connect the vacuum line fitting to the bottom port of the MAP sensor before placing the MAP sensor onto its bracket and installing the MAP sensor electrical connector. Reinstallation of the engine sight shield represents the last step in the process.

The ignition needs to be turned off before starting replacement of the Manifold Absolute Pressure (MAP) sensor. You need to remove the screws which hold the MAP sensor bracket before disconnecting the electrical connector and MAP vacuum hose. First attach the new MAP sensor to its bracket then reconnect both MAP inlet vacuum hose and MAP sensor electrical connector. Secure the screws to 3 N.m (27 lb in) torque but always refer to the Fastener Notice in Service Precautions.

Connect the MAP sensor electrical connector.

Disconnect the manifold absolute pressure (MAP) sensor electrical connector and remove the MAP sensor from the bracket.

Turn the ignition OFF and remove the engine sight shield.

Remove the MAP sensor from the intake manifold and inspect the MAP sensor grommet for wear or damage, replacing it as necessary.

Pull the MAP sensor straight out of the PCV valve cover.

Reconnect the MAP sensor electrical connector and reinstall the fuel injector sight shield.