SYMBOLDESCRIPTIONS1Hi Blower Relay2Evaporator Pressure Control Switch3Battery Junction Block4Fusible link5A/C Compressor6Vacuum Hose7Water Valve8Blower Motor Resistor (Front)9Rear A/C Blower Resistor10Blower Motor11High Pressure Cutout Switch12Coolant Temperature Cutout Switch GMC Van 1991 Electrical Circuit Symbol Map
