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Home >> Cadillac >> 2011 >> Escalade EXT >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating, Ventilation, And Air Conditioning >> Diagnostic Information and Procedures >> Air Conditioning (A/C) System Performance Test (HP2) >> A/C System Pressure- Zone Classification with Aux A/C

A/C System Pressure- Zone Classification with Aux A/C

Fig 1: A/C System Pressure - Zone Classification With AUX A/C
GM2035115Courtesy of GENERAL MOTORS CORP.
A/C Performance Table with Aux A/C

Ambient Air Temperature Relative Humidity Service Port Pressure Maximum Discharge Air Temperature
Low Side High Side Left Front Center Left Rear
13-18°C (55-65°F) 0-100% 179-268 kPa (26-39 psi) 682-999 kPa (99-145 psi) 11°C (51°F) 13°C (54°F)
19-24°C (66-75°F) Below 40% 199-289 kPa (29-42 psi) 813-1157 kPa (118-168 psi) 14°C (56°F) 15°C (59°F)
Above 40% 206-3102 kPa (30-45 psi) 861-1191 kPa (125-173 psi) 14°C (56°F) 15°C (59°F)
25-29°C (76-85°F) Below 35% 234-316 kPa (34-46 psi) 1061-1350 kPa (154-196 psi) 17°C (61°F) 18°C (64°F)
35-50% 248-323 kPa (36-47 psi) 1081-1350 kPa (157-196 psi) 18°C (64°F) 18°C (64°F)
Above 50% 254-344 kPa (37-50 psi) 1088-1350 kPa (158-196 psi) 18°C (64°F) 19°C (66°F)
30-35°C (86-95°F) Below 30% 261-351 kPa (38-51 psi) 1260-1577 kPa (183-229 psi) 19°C (65°F) 22°C (70°F)
30-50% 268-365 kPa (39-53 psi) 1267-1557 kPa (184-226 psi) 19°C (66°F) 23°C (72°F)
Above 50% 282-385 kPa (41-56 psi) 1267-1543 kPa (184-224 psi) 20°C (68°F) 23°C (73°F)
36-41°C (96-105°F) Below 20% 296-378 kPa (43-55 psi) 1508-1818 kPa (219-264 psi) 20°C (68°F) 23°C (73°F)
20-40% 303-392 kPa (44-57 psi) 1502-1791 kPa (218-260 psi) 22°C (70°F) 25°C (77°F)
Above 40% 316-406 kPa (46-59 psi) 1488-1756 kPa (216-255 psi) 23°C (72°F) 27°C (79°F)
42-46°C (106-115°F) Below 20% 330-406 kPa (48-59 psi) 1756-2018 kPa (255-293 psi) 23°C (72°F) 27°C (79°F)
Above 20% 337-420 kPa (49-61 psi) 1743-1970 kPa (253-286 psi) 24°C (75°F) 28°C (82°F)
47-49°C (116-120°F) Below 30% 365-447 kPa (53-65 psi) 1942-2191 kPa (282-318 psi) 25°C (77°F) 30°C (86°F)