GMC Savana G3500 (1996-2013) 8.1l vin g, compressor circuit

A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH RELAY (IN UNDERHOOD FUSE BLOCK) A/C HIGH PRESSURE SWITCH (REAR OF A/C A/C LOW PRESSURE SWITCH (IN REFRIGERANT BLK WIRE BRN WIRE CLUTCH RLY CTRL COMPRESSOR) DEFROST BLEND DIODE (IN UNDERHOOD FUSE BLOCK) DK GRN WIRE DK GRN/WHT WIRE HEAT A/C VENT BI-LEV HOT IN RUN HTR A/C FUSE 12 HOT IN RUN OR START HVAC CONTROL ASSEMBLY I/P FUSE BLOCK (LOWER LEFT KICK PANEL) IGN E FUSE LINE LOW PRESS SIG LT GRN WIRE OFF MAX ORG/ WIRE PNK WIRE POWERTRAIN CONTROL MODULE (PCM) (ON LEFT FRONT INNER FENDER) REQUEST SIG