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.
A/C System
| Item | Description | Notes |
|---|---|---|
| A/C Clutch Air Gap | 0.35 - 0.60 mm (0.014 - 0.024 in.) | All Engines |
| A/C Clutch Coil Draw | 3.2 amps Max @ 12V ± 0.5V @ 21° C (70° F) | 5.7L, 6.2L, 6.4L Engines |
| 3.1 - 4.0 amps @ 12V ± 0.5V @ 21° C (70° F) | 3.6L Engine | |
| A/C Clutch Coil Resistance | 3.3 - 3.5 ohms | 5.7L, 6.2L, 6.4L Engines |
| 3.0 - 4.0 ohms | 3.6L Engine | |
| Freeze-up Control | Evaporator Temperature Sensor | HVAC housing mounted |
| Pressure Control | A/C Pressure Transducer | A/C discharge line mounted |
| Refrigerant Charge Capacity. Refer to CAPACITIES AND RECOMMENDED FLUIDS, SPECIFICATIONS . | 3.6L Engines | * Use only VC-46 PAG oil |
| 5.7L, 6.2L, 6.4L Engines | * Use only ND12 PAG oil |
* Always use the type of PAG oil listed for the model being serviced. See A/C Underhood Specification Label located in the engine compartment. Refer to OIL, REFRIGERANT, STANDARD PROCEDURE .
* VC-46 and ND12 PAG oils are compatible with R-1234yf/ R-134A.
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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.