Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2007SILVERADO CLASSIC 1500 4WD V8-4.8LREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGREFRIGERANT PRESSURE SENSOR / SWITCHLOW PRESSURE SENSOR / SWITCHSERVICE AND REPAIR
2007 Chevrolet Silverado Classic 1500 4WD V8-4.8L
Low Pressure Sensor / Switch: Service and Repair
2007 Chevrolet Silverado Classic 1500 4WD V8-4.8LSECTION 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. Lightly coat the NEW O-ring seal with mineral base 525 viscosity refrigerant oil.
2. Install the NEW O-ring seal to the switch.
Notice: Refer to Fastener Notice.
3. Install the A/C low pressure switch to the accumulator.
Tighten the switch to 6 N.m (53 lb in).
4. Connect the electrical connector to the A/C low pressure switch.
5. Leak test the fittings of the components using the J 39400-A.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.