GMC Sonoma II (1994-2004) (strapped to body harness, at left center of dash) Wiring diagrams

0.26 OHMS 2.10 OHMS 8 CM FROM BREAKOUT TO RADIO) A/C A/C COMP RELAY CTRL A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH DIODE A/C COMPRESSOR CLUTCH RELAY A/C FUSE A/C PRESS SENS SIG A/C REFRIGERANT PRESSURE SENSOR (ON A/C EVAPORATOR TUBE) A/C REQUEST SIGNAL AIR TEMPERATURE ACTUATOR (ON TOP RIGHT SIDE OF HEATER) BLEND BLK WIRE BLOWER MOTOR (ON RIGHT REAR OF ENGINE COMPARTMENT) BLOWER MOTOR RELAY (ON CENTER REAR OF ENGINE COMPARTMENT) BLOWER SWITCH BRN WIRE DEF DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GRY WIRE HEAT BI-LEVEL A/C VENT HEATER, A/C CONTROLLER HOT AT ALL TIMES HOT IN PARK, HEAD HOT IN RUN HOT IN RUN, START HVAC 1 FUSE 21 HVAC FUSE 9 I/P FUSE BLOCK (ON LEFT END OF DASH) IGN E FUSE ILLUM ILLUM FUSE 12 LOW HIGH MED 1 MED 2 LT BLU WIRE MODE DOOR SWITCH NCA WIRE OFF DEF MAX A/C BLEND NORM HEAT BI-LEVEL VENT OFF MAX A/C ORG/ WIRE POWER MIRRORS SYSTEM (AUTOMATIC DAY/NIGHT MIRROR) POWERTRAIN CONTROL MODULE (PCM) (ON RIGHT FRONT OF ENGINE COMPARTMENT) PPL RED/BLK WIRE SECONDARY AIR INJECTION REACTOR PUMP SENSOR GND SERVO AMPLIFIER TAN WIRE TEMP CONTROL UNDERHOOD FUSE BLOCK (ON TOP OF LEFT FRONT INNER WHEELWELL) UNDERHOOD FUSE BLOCK (ON TOP OF LEFT FRONT INNER WHEELWELL) HVAC FUSE

0.26 OHMS 2.10 OHMS 8 CM FROM BREAKOUT TO RADIO) A/C A/C COMP RELAY CTRL A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH DIODE A/C COMPRESSOR CLUTCH RELAY A/C FUSE A/C PRESS SENS SIG A/C REFRIGERANT PRESSURE SENSOR (ON A/C EVAPORATOR TUBE) A/C REQUEST SIGNAL AIR TEMPERATURE ACTUATOR (ON TOP RIGHT SIDE OF HEATER) BLEND BLK WIRE BLOWER MOTOR (ON RIGHT REAR OF ENGINE COMPARTMENT) BLOWER MOTOR RELAY (ON CENTER REAR OF ENGINE COMPARTMENT) BLOWER SWITCH BRN WIRE DEF DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GRY WIRE HEAT BI-LEVEL A/C VENT HEATER, A/C CONTROLLER HOT AT ALL TIMES HOT IN PARK, HEAD HOT IN RUN HOT IN RUN, START HVAC 1 FUSE 21 HVAC FUSE 9 I/P FUSE BLOCK (ON LEFT END OF DASH) IGN E FUSE ILLUM ILLUM FUSE 12 LOW HIGH MED 1 MED 2 LT BLU WIRE MODE DOOR SWITCH NCA WIRE OFF DEF MAX A/C BLEND NORM HEAT BI-LEVEL VENT OFF MAX A/C ORG/ WIRE POWER MIRRORS SYSTEM (AUTOMATIC DAY/NIGHT MIRROR) POWERTRAIN CONTROL MODULE (PCM) (ON RIGHT FRONT OF ENGINE COMPARTMENT) PPL RED/BLK WIRE SECONDARY AIR INJECTION REACTOR PUMP SENSOR GND SERVO AMPLIFIER TAN WIRE TEMP CONTROL UNDERHOOD FUSE BLOCK (ON TOP OF LEFT FRONT INNER WHEELWELL) UNDERHOOD FUSE BLOCK (ON TOP OF LEFT FRONT INNER WHEELWELL) HVAC FUSE

0.26 OHMS 0.71 OHMS 2.10 OHMS 8 CM FROM BREAKOUT TO RADIO) A/C A/C COMP RLY CTRL A/C COMPRESSOR CLUTCH A/C COMPRESSOR CLUTCH DIODE A/C COMPRESSOR CLUTCH RELAY A/C COMPRESSOR HIGH PRESSURE SWITCH (ON REAR OF A/C COMPRESSOR) A/C CYCLING SW SIGNAL A/C FUSE A/C LOW PRESSURE SWITCH (AT A/C ACCUMULATOR) A/C REQUEST SIGNAL AIR TEMPERATURE ACTUATOR (ON TOP RIGHT SIDE OF HEATER) BLEND BLK WIRE BLK/ WHT WIRE BLK/WHT WIRE BLOWER MOTOR (ON RIGHT REAR OF ENGINE COMPARTMENT) BLOWER MOTOR RELAY (ON CENTER REAR OF ENGINE COMPARTMENT) BLOWER MOTOR RESISTOR (ON RIGHT REAR OF ENGINE COMPARTMENT, ON BLOWER MODULE) BLOWER SWITCH BRN WIRE DEF DK BLU WIRE DK GRN WIRE DK GRN/ WHT WIRE DK GRN/WHT WIRE GRY WIRE HEAT BI-LEVEL A/C VENT HEATER, A/C CONTROLLER HOT AT ALL TIMES HOT IN PARK, HEAD HOT IN RUN HOT IN RUN, START HVAC 1 FUSE 21 HVAC FUSE HVAC FUSE 9 I/P FUSE BLOCK (ON LEFT END OF DASH) IGN E FUSE ILLUM ILLUM FUSE 12 LOW HIGH MED 1 MED 2 LT BLU WIRE MODE DOOR SWITCH NCA WIRE OFF DEF MAX A/C BLEND NORM HEAT BI-LEVEL VENT OFF MAX A/C ORG/ WIRE PICKUP UTILITY POWER MIRRORS SYSTEM (AUTOMATIC DAY/NIGHT MIRROR) POWERTRAIN CONTROL MODULE (PCM) (ON RIGHT FRONT OF ENGINE COMPARTMENT) PPL SECONDARY AIR INJECTION REACTOR PUMP SERVO AMPLIFIER TAN WIRE TEMP CONTROL UNDERHOOD FUSE BLOCK (ON TOP OF LEFT FRONT INNER WHEELWELL)

0.26 OHMS 0.71 OHMS 2.10 OHMS 8 CM FROM BREAKOUT TO RADIO) AIR TEMPERATURE ACTUATOR (ON TOP RIGHT SIDE OF HEATER) BI-LEVEL BI-LEVEL BLEND HEAT VENT BLEND VENT HEAT BLK WIRE BLOWER MOTOR (ON RIGHT REAR OF ENGINE COMPARTMENT) BLOWER MOTOR RELAY (ON CENTER REAR OF ENGINE COMPARTMENT) BLOWER MOTOR RESISTOR (ON RIGHT REAR OF ENGINE COMPARTMENT, ON BLOWER MODULE) BLOWER SWITCH BRN WIRE DEFROST DEFROST OFF DK BLU WIRE GRY WIRE HEATER CONTROLLER HOT AT ALL TIMES HOT IN PARK, HEAD HOT IN RUN HVAC 1 FUSE 21 HVAC FUSE HVAC FUSE 9 I/P FUSE BLOCK (ON LEFT END OF DASH) ILLUM ILLUM FUSE 12 LOW MED 1 MED 2 LT BLU WIRE MODE DOOR SWITCH OFF ORG/ WIRE PPL SERVO AMPLIFIER TAN WIRE TEMP CONTROL UNDERHOOD FUSE BLOCK (ON TOP OF LEFT FRONT INNER WHEELWELL)

0.26 OHMS 0.71 OHMS 2.10 OHMS 8 CM FROM BREAKOUT TO RADIO) AIR TEMPERATURE ACTUATOR (ON TOP RIGHT SIDE OF HEATER) BI-LEVEL BI-LEVEL BLEND HEAT VENT BLEND VENT HEAT BLK WIRE BLOWER MOTOR (ON RIGHT REAR OF ENGINE COMPARTMENT) BLOWER MOTOR RELAY (ON CENTER REAR OF ENGINE COMPARTMENT) BLOWER MOTOR RESISTOR (ON RIGHT REAR OF ENGINE COMPARTMENT, ON BLOWER MODULE) BLOWER SWITCH BRN WIRE DEFROST DEFROST OFF DK BLU WIRE GRY WIRE HEATER CONTROLLER HOT AT ALL TIMES HOT IN PARK, HEAD HOT IN RUN HVAC 1 FUSE 21 HVAC FUSE HVAC FUSE 9 I/P FUSE BLOCK (ON LEFT END OF DASH) ILLUM ILLUM FUSE 12 LOW MED 1 MED 2 LT BLU WIRE MODE DOOR SWITCH OFF ORG/ WIRE PPL SERVO AMPLIFIER TAN WIRE TEMP CONTROL UNDERHOOD FUSE BLOCK (ON TOP OF LEFT FRONT INNER WHEELWELL)