GM3 65 1981 ELECTRONIC ENGINE EMISSION CONTROLS TYPICAL 8 CYL SHOWN r 1 VALVE A l R Injection Control 3 670 VALVE Electronic Air Control Switching 3 670 VALVE A R Switching E ectric 3 670 2 SENSOR Coolant Temperature 1 150 SENSOR Manifold Air Temperature 3 670 3 SOLENOID Mixture Control 3 440 4 SENSOR Throttle Position 3 764 5 CONTROLLER ECM Electronic Control Module 3 670 I CONTROL Electronic Spark 2 383 MODULE Modulated Displacement Selector Drive 2 410 6 CALIBRATOR PROM Programmab e Read Only Memory 3 670 7 HARNESS Inst Panel 2 480 8 MODULE Cold Start Program Modifier E Cell 3 670 MODULE Electronic Vacuum Sensor 2 480 9 HARNESS Electronic Control Module Wiring 3 675 10 SENSOR Manifold Absolute Pressure 3 670 11 SENSOR Barometric Pressure 3 670 12 SENSOR Exhaust Oxygen 3 670 13 CONTROL KIT Idle Speed 3 766 14 VALVE EFE EGR Canister Solenoid 3 670 VALVE EFE EGR Solenoid 3 670 SOLENOID EGR Control Valve Relay 3 670 15 SENSOR Manifold Differential Pressure 3 670 16 MODULE RPM Signal Conditioner 3 670 RELAY Air Control Valve 3 670 RELAY EGR Control Valve 3 670 RELAY EFE 3 670 17 RELAY Air Control Valve 3 670 r RELAY EGR Control Valve 3 670 RELAY EFE 3 670 The parts illustrated here are a schematic layout guide of those items directly related to the computer controlled emission system lt is typical for all engine displacements and part content will differ dependant upon restrictions of vehicle weight cubic inch liter options etc There may be several listings at a single callout identification number due to different functionsperformed by similar parts and would vary in relation to specific engine requirements Until such time as we are able to publish individual and specific engine emission illustrations refer to this illustration for nomenclature and grouping See also the emission reference chart immediately following this illustration WAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORAT ON BUlCl 41A REV 2 5 81 V was 3 000 GROUP