Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSGMC2013RV CUTAWAY 4.8L ENG VIN AREPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSHEATING, VENTILATION, AND AIR CONDITIONINGDIAGNOSTIC INFORMATION AND PROCEDURESAIR CONDITIONING (A/C) SYSTEM PERFORMANCE TEST
2013 GMC RV Cutaway 4.8L Eng VIN A
Air Conditioning (A/C) System Performance Test
2013 GMC RV Cutaway 4.8L Eng VIN ASECTION Air Conditioning (A/C) System Performance Test
This test measures the operating efficiency of the A/C system under the following conditions:
- The current ambient air temperature
- The current relative humidity
- The high side pressure of the A/C system
- The low side pressure of the A/C system
- The temperature of the air being discharged into the passenger compartment
Test Description
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.
Air Conditioning (A/C) System Performance Test
| Step | Action | Values | Yes | No |
|---|---|---|---|---|
|
NOTE:
|
||||
| 1 |
|
More than 16°C (60°F) - 345 kPa (50 psi) More than 24°C (75°F) - 483 kPa (70 psi) More than 33°C (90°F) - 690 kPa (100 psi) |
Go to Step 2 | Go to Leak Testing |
| 2 |
NOTE:
Record the relative humidity and the ambient air temperature at the time of the test.
NOTE:
Press the RESET button, before using the print function of the J 43600 ACR 2000 Refrigerant Station. |
- | Go to Step 5 | Go to Step 3 |
| 3 | If the pressures and temperatures recorded do not fall within the specified ranges:
Does all the data recorded fall within the specified ranges of the table below? |
- | Go to Step 5 | Go to Step 4 |
| 4 | Perform the necessary repairs. Refer to A/C Diagnostics Chart . Is the action complete? |
- | Go to Step 5 | - |
| 5 | Operate the system in order to verify the test results. Did you find the same results? |
- | System OK | Go to Symptoms - HVAC Systems - Manual |
A/C Performance Table - Front Only
| Ambient Air Temperature | Relative Humidity | Service Port Pressure | Maximum Left Center Discharge Air Temperature | |
|---|---|---|---|---|
| Low Side | High Side | |||
| 13-18°C (55-65°F) | 0-100% | 175-194 kPa (25-28 psi) | 630-1170 kPa (91-170 psi) | 7°C (45°F) |
| 19-24°C (66-75°F) | Below 40% | 175-204 kPa (25-27 psi) | 620-1130 kPa (90-164 psi) | 7°C (45°F) |
| Above 40% | 175-240 kPa (25-35 psi) | 820-1320 kPa (119-192 psi) | 10°C (50°F) | |
| 25-29°C (76-85°F) | Below 35% | 175-238 kPa (25-35 psi) | 930-1300 kPa (135-189 psi) | 10°C (50°F) |
| 35-60% | 175-249 kPa (25-36 psi) | 1120-1350 kPa (148-196 psi) | 11°C (52°F) | |
| Above 60% | 175-271 kPa (25-39 psi) | 1100-1450 kPa (160-210 psi) | 13°C (56°F) | |
| 30-35°C (86-95°F) | Below 30% | 184-282 kPa (27-41 psi) | 1160-1530 kPa (168-222 psi) | 14°C (57°F) |
| 30-50% | 194-292 kPa (28-42 psi) | 1210-1560 kPa (176-226 psi) | 15°C (59°F) | |
| Above 50% | 209-307 kPa (30-45 psi) | 1270-1600 kPa (184-232 psi) | 17°C (63°F) | |
| 36-41°C (96-105°F) | Below 20% | 232-326 kPa (34-47 psi) | 1430-1790 kPa (208-260 psi) | 17°C (63°F) |
| 20-40% | 237-332 kPa (34-48 psi) | 1440-1770 kPa (209-257 psi) | 18°C (64°F) | |
| Above 40% | 247-338 kPa (36-49 psi) | 1460-1760 kPa (212-255 psi) | 19°C (66°F) | |
| 42-46°C (106-115°F) | Below 20% | 383-367 kPa (41-53 psi) | 1710-2010 kPa (248-292 psi) | 20°C (68°F) |
| Above 20% | 286-369 kPa (42-54 psi) | 1710-1960 kPa (248-285 psi) | 21°C (70°F) | |
| 47-49°C (116-120°F) | Below 30% | 327-392 kPa (48-57 psi) | 1930-2110 kPa (280-306 psi) | 23°C (73°F) |
A/C Performance Table - With Rear A/C
| Ambient Temperature | Relative Humidity | Low Side Service Port Pressure | High Side Service Port Pressure | Maximum Left Center Discharge Air Temperature | Maximum Left Side Rear Discharge Air Temperature |
|---|---|---|---|---|---|
| 13-18°C (55-65°F) | 0-100% | 175-204 kPa (25-30 psi) | 360-870 kPa (52-126 psi) | 12°C (53°F) | 7°C (45°F) |
| 19-24°C (66-75°F) | Less than 40% | 175-235 kPa (25-34 psi) | 490-1010 kPa (71-147 psi) | 12°C (53°F) | 10°C (50°F) |
| Greater than 40% | 175-263 kPa (25-42 psi) | 620-1120 kPa (90-163 psi) | 14°C (57°F) | 12°C (54°F) | |
| 25-29°C (76-85°F) | Less than 35% | 177-290 kPa (26-42 psi) | 870-1270 kPa (126-184 psi) | 16°C (61°F) | 14°C (57°F) |
| 35-60% | 191-295 kPa (28-43 psi) | 920-1290 kPa (134-187 psi) | 16°C (61°F) | 15°C (59°F) | |
| Greater than 60% | 202-304 kPa (29-44 psi) | 960-1330 kPa (139-193 psi) | 17°C (63°F) | 16°C (61°F) | |
| 30-35°C (86-95°F) | Less than 30% | 244-362 kPa (35-53 psi) | 1160-1590 kPa (168-231 psi) | 22°C (72°F) | 19°C (66°F) |
| 30-50% | 249-358 kPa (36-52 psi) | 1180-1590 kPa (171-231 psi) | 21°C (70°F) | 20°C (68°F) | |
| Greater than 50% | 255-353 kPa (37-51 psi) | 1210-1580 kPa (176-229 psi) | 20°C (68°F) | 22°C (72°F) | |
| 36-41°C (96-105°F) | Less than 20% | 325-441 kPa (47-62 psi) | 1520-1940 kPa (221-282 psi) | 28°C (82°F) | 25°C (77°F) |
| 20-40% | 323-428 kPa (46-60 psi) | 1510-1900 kPa (219-276 psi) | 26°C (79°F) | 25°C (77°F) | |
| Greater than 40% | 320-415 kPa (59-73 psi) | 1510-1860 kPa (219-270 psi) | 25°C (77°F) | 26°C (79°F) | |
| 42-46°C (106-115°F) | Less than 20% | 407-506 kPa (59-70 psi) | 1880-2230 kPa (273-324 psi) | 33°C (91°F) | 29°C (84°F) |
| Greater than 20% | 401-485 kPa (58-70 psi) | 1860-2160 kPa (270-314 psi) | 30°C (86°F) | 30°C (86°F) | |
| 47-49°C (116-120°F) | Less than 30% | 466-532 kPa (68-77 psi) | 2150-2360 kPa (312-343 psi) | 34°C (93°F) | 32°C (90°F) |
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.