| Vehicle | High | Low |
| Passenger Cars |
| All Models | (1) | (2) |
| Truck & Vans |
| All Models | (3) | (2) |
| (1) In discharge line between compressor and condenser. (2) On compressor head or suction line. (3) On muffler in discharge line near compressor. |
| (1) | In discharge line between compressor and condenser. |
| (2) | On compressor head or suction line. |
| (3) | On muffler in discharge line near compressor. |
1990 SERVICE VALVE LOCATIONS
| Vehicle | High | Low |
| Monaco | (1) | (3) |
| All Others | (1) | (2) |
| Trucks & Vans |
| All Models | (4) | (5) |
| (1) In discharge line between compressor and condenser or liquid line to evaporator. (2) On compressor head or suction line. (3) Service valve on accumulator. (4) On muffler in discharge line near compressor. (5) On compressor head. |
| (1) | In discharge line between compressor and condenser or liquid line to evaporator. |
| (2) | On compressor head or suction line. |
| (3) | Service valve on accumulator. |
| (4) | On muffler in discharge line near compressor. |
1991 SYSTEM SERVICE VALVE LOCATIONS