gmc Workshop Repair Guides

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Low Pressure Sensor / Switch: Service and Repair

AIR CONDITIONING (A/C) LOW PRESSURE SWITCH REPLACEMENT

REMOVAL PROCEDURE

1. Disconnect the electrical connector from the A/C low pressure switch.

2. Remove the A/C low pressure switch from the accumulator.
3. Remove the O-ring and discard.

INSTALLATION PROCEDURE

1. Install the new O-ring seal to the switch.

2. NOTE:  Refer to Fastener Notice.

Install the A/C low pressure switch to the accumulator.

Tighten the switch to 6 N.m (53 lb in).

3. Connect the electrical connector to the A/C low pressure switch.
4. Leak test the fittings of the components using the J 39400-A.

Heating and Air Conditioning > Refrigerant Pressure Sensor / Switch, HVAC > Low Pressure Sensor / Switch, HVAC > Component Information > Diagrams > Page 17596

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