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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 222 (Heating, Ventilation And Air Conditioning) >> Diagnostic Information and Procedures >> Air Conditioning (A/C) System Performance Test >> Test Description

Test Description

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The numbers below refer to the step numbers on the diagnostic table.

  1. This step determines if the A/C system has at least the minimum refrigerant charge required to operate the system without damage.
  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 temperatures.
Fig 1: Air Conditioning (A/C) System Performance Test (1 Of 3)
G01216863Courtesy of GENERAL MOTORS CORP.
Fig 2: Air Conditioning (A/C) System Performance Test (2 Of 3)
G01216864Courtesy of GENERAL MOTORS CORP.
Fig 3: Air Conditioning (A/C) System Performance Test (3 Of 3)
G01216865Courtesy of GENERAL MOTORS CORP.
Fig 4: A/C Performance Table - Front Only
G01216866Courtesy of GENERAL MOTORS CORP.
Fig 5: A/C System Pressure - Zone Classification With Front A/C
G01216867Courtesy of GENERAL MOTORS CORP.
Fig 6: A/C Performance Table - With Rear A/C (1 Of 2)
G01216868Courtesy of GENERAL MOTORS CORP.
Fig 7: A/C Performance Table - With Rear A/C (2 Of 2)
G01216869Courtesy of GENERAL MOTORS CORP.
Fig 8: A/C System Pressure - Zone Classification With Rear A/C
G01216870Courtesy of GENERAL MOTORS CORP.
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