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 MANUALSGMC2013SIERRA DENALI AWD V8-6.2LREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGREFRIGERANT PRESSURE SENSOR / SWITCHSERVICE AND REPAIRAIR CONDITIONING CYCLING SWITCH REPLACEMENT
2013 GMC Sierra Denali AWD V8-6.2L
Air Conditioning Cycling Switch Replacement
2013 GMC Sierra Denali AWD V8-6.2LSECTION Air Conditioning Cycling Switch Replacement
Air Conditioning Cycling Switch Replacement (Non-HP2)
Special Tools
J-39400-A - Halogen Leak Detector
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. Refer to Air Conditioning O-Ring Seal Replacement Air Conditioning O-Ring Seal Replacement.
Caution: Refer to Fastener Caution Fastener Caution.
2. Install the A/C low pressure switch to the accumulator and tighten to 6 Nm (53 lb in).
3. Connect the electrical connector to the A/C low pressure switch.
4. Leak test the fittings of the components using theJ-39400-A - halogen leak detector.
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.