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1: This step determines if the A/C system has at least the minimum refrigerant charge 2: This step measures the performance of the A/C system. 3: This step is to allow for vehicle variations as well as high ambient air temperatures. Step Action Values Yes No IMPORTANT: The ambient air temperature must be at least 16°C ( 60°F). Do not induce additional air flow across the front of the vehicle during the test. If you were sent here from a DTC diagnostic table, clear the DTC upon completion of this test. 1 1. Park the vehicle inside or in the shade. 2. Open the windows in order to ventilate the interior of the vehicle. 3. If the A/C system was operating, allow the A/C system to equalize for 4. Turn OFF the ignition. 5. Install the J 43600 ACR 2000 Refrigerant Station. See Special 6. Record the ambient air temperature displayed on the J 43600 . See 7. Record the low and high side STATIC pressure readings. Are both the low and high side pressures Above Above Above Go to Step 2 Go to Leak 1. Close the vehicle doors and windows. IMPORTANT: Record the relative humidity and the
2008 Chevrolet Silverado 1500 2008 HVAC Heating, Ventilation, and Air Conditioning - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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