pontiac Workshop Repair Guides

Pontiac Workshop Service and Repair Manuals

Coolant Temperature Sensor/Switch (For Computer) > < Absolute Pressure Sensor <--> [Barometric Pressure Sensor]|Specifications|Page 2235
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Absolute Pressure Sensor: Service and Repair

MAP and Vacuum sensors are accessible through the engine compartment. 

The BARO sensor may be located either in the engine compartment or strapped to the ECM harness under the dash panel.

Check for loose hoses and electrical connections, 

If a sensor tests as faulty replace sensor

Coolant Temperature Sensor/Switch (For Computer) > < Absolute Pressure Sensor <--> [Barometric Pressure Sensor]|Specifications|Page 2235