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Go to Step 2 Test (Gas 2 After continued operation of the A/C system, do Go to Step 5 Go to Step 3 3 Refer to the pressures recorded during the A/C The low side pressure is equal to or The high side pressure is less than the The low side refrigerant line at the CAUTION: Refer to Moving Parts and Hot Surfaces
2008 Chevrolet Silverado 1500 2008 HVAC Heating, Ventilation, and Air Conditioning - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
The high side refrigerant line at the Go to Step 5 Go to Step 4 4 Refer to the pressures recorded during the A/C The low side pressure is greater than the The high side pressure is less than the The low side refrigerant line at the The high side refrigerant line at the CAUTION: Refer to Moving Parts and Hot Surfaces Go to Air
2008 Chevrolet Silverado 1500 2008 HVAC Heating, Ventilation, and Air Conditioning - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Go to Step 5 Engine 5 The A/C system has a low refrigerant charge. Go to Step 6 - 6 1. Record the low and the high side pressures as well as the instrument panel (I/P) air 2. Compare the pressures and the panel outlet temperature to those listed in the A/C Are the readings within the specified ranges Go to Step 13 Go to Step 7 7 The A/C compressor is malfunctioning. Go to Step 9 Go to Step 8 8 Inspect the expansion device for a brown, Go to Step 11 Go to Step 12 1. Remove the suction and the discharge lines from the compressor. Refer to Suction
2008 Chevrolet Silverado 1500 2008 HVAC Heating, Ventilation, and Air Conditioning - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
9 and L92) or Suction Hose Replacement 2. Inspect for metal flake contamination at the line connections and the compressor Is metal flake contamination present? Go to Step 10 Go to Step 12 10 1. Replace the A/C compressor. Refer to Air Conditioning Compressor 2. Replace the orifice tube. Refer to Expansion (Orifice) Tube 3. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Is the repair complete? Go to Step 13 - 11 1. Flush the A/C system. Refer to Flushing. 2. Replace the orifice tube. Refer to Expansion (Orifice) Tube 3. Replace the A/C compressor. Refer to Air Conditioning Compressor 4. Replace the accumulator. Refer to Air
2008 Chevrolet Silverado 1500 2008 HVAC Heating, Ventilation, and Air Conditioning - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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