C 2500 Yukon XL 2WD V8-8.1L VIN G (2002)
Manifold Pressure/Vacuum Sensor: Service and Repair
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR REPLACEMENT
REMOVAL PROCEDURE
1. Loosen the fastener (4) from the intake manifold sight shield.
2. Remove the sight shield (1) from the intake manifold (3).
3. Disconnect the manifold absolute pressure (MAP) sensor electrical connector (2).
4. Remove the MAP sensor retaining bolt and washer (1).
5. Remove the MAP sensor (3) from the intake manifold (2).
6. Inspect the MAP sensor seal for wear or damage and replace as necessary.
INSTALLATION PROCEDURE
IMPORTANT: Lightly coat the MAP sensor seal with rubber lubricant part number 9985770 before installing the sensor. The lubricant should be
applied with a sponge or a brush. To prevent blockage, avoid dipping the sensor port directly into the lubricant.
