Repair Guide: Fixing AC Compressor Issues on a 2017 Chevrolet Impala
Introduction
The air conditioning (AC) compressor is a crucial component in a vehicle's AC system. On the 2017 Chevrolet Impala, there have been some less typical cases where the AC compressor malfunctions, causing no cool air to blow out of the vents. This guide provides a comprehensive look at the necessary steps for diagnosing and repairing this issue.
Preparation
Tools and Materials Required
- Wrench set
- Screwdrivers
- Voltmeter
- New AC compressor (if necessary)
- Coolant Recovery Tank
- Safety glasses
- Work gloves
Diagnosis
Start the vehicle and engage the AC. If no cool air blows out or if the temperature fluctuates significantly, the compressor may be at fault.
Repair Steps
1. Accessing and Removing the AC Compressor
The compressor is located at the front of the engine compartment. First, you need to disconnect the battery, then remove the serpentine belt, followed by the AC lines on the compressor. It is highly recommended to wear safety glasses and gloves during this process to protect your eyes and hands.
2. Check Compressor Clutch
Use a voltmeter to check the voltage of the compressor clutch. It should get 12 volts when the AC is turned on. If it does not, there could be an electrical problem causing the compressor not to engage.
3. Inspect Compressor
Look for any visible signs of damage. A seized compressor often has visible cues such as leaks or a burned-out clutch.
4. Replace the Compressor
If the compressor shows signs of faulty operation, replace it with a new unit. Installation is the reverse of removal.
5. Refill the Refrigerant
Once the new compressor is installed, refill the refrigerant per the manufacturer’s guidelines.
Note: Avoid overfilling the system as it can end up causing more harm than good. Use a gauge to accurately measure the amount of refrigerant being filled.
Potential Pitfalls
Do not rush the process of diagnosing the problem; rushing may lead to overlooking other possible causes of the issue. Take note that electrical faults can also cause the compressor to malfunction. Always double-check electrical connections if a new compressor fails to function as expected.
Tips
It may be a wise idea to replace the orifice tube and receiver dryer whenever you replace the AC compressor to keep the AC system in the best possible condition.
Always wear safety glasses and gloves when working with HVAC systems. Refrigerant can freeze skin and eyes upon contact.