S15/T15 Sonoma P/U 2WD V6-4.3L VIN W (1996)
Service Port HVAC: Locations
Evaporator Tube
The A/C Service Port - High Side.
Attach Hose At Evaporator-Figure 49
The A/C Service Port - Low Side.
GMC Workshop Service and Repair Manuals
Service Port HVAC|Service Precautions >
< A/C High Pressure Switch|Page 10169
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