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Insufficient Cooling "Quick Check" Procedure

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

Perform the following "hand-feel" procedure to get a quick idea of whether the A/C system has the proper charge of refrigerant. The air temperature must be above 21°C (70°F) for most models.

  1. Warm up the engine. Run the engine at idle.
  2. Open the hood and all the doors.
  3. Turn the A/C switch ON.
  4. Set the temperature control to the full cold position.
  5. Set the blower speed switch on the maximum speed setting.
  6. "Hand-feel" the temperature of the evaporator outlet pipe. The pipe should be cold.
  7. Check for other problems.
  8. Leak check the system. Refer to Leak Testing . If you find a leak, discharge the system and repair the leak as required. After completing the repair, evacuate the system and charge it.
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