General Motors A & C Chart Reference

GENERAL MOTORS A & C CHART REFERENCE

System or Component Location	Diagnostic Information
A-1 & A-2 SERVICE ENGINE SOON Light	See DIAGNOSTIC CIRCUIT CHECK CHECK in this article
A-3 No Start	See NO START - ENGINE CRANKS OK in this article
A-5 Fuel Pump Relay	See RELAYS, SOLENOIDS & MOTORS in this article.
A-7 Fuel System Diagnosis	See BASIC FUEL SYSTEM CHECKS in this article.
C-1 ECM/PCM Replacement Check	See ECM REPLACEMENT CHECK in this article.
C-1 MAP Sensor	See ENGINE SENSORS & SWITCHES in this article.
C-1 Power Steering Pressure Switch	See ENGINE SENSORS & SWITCHES in this article.
C-1 Park/Neutral Switch	See ENGINE SENSORS & SWITCHES in this article.
C-2 Injector Balance Test	See FUEL SYSTEM in this article.
C-2 IAC Motor	See IDLE CONTROL SYSTEM in this article.
C-2 ISC Motor	See IDLE CONTROL SYSTEM in this article.
C-3 Canister Purge Sys (Fuel Evaporation Control)	See EMISSION SYSTEMS & SUB- SYSTEMS in this article.
C-4 EST Ignition Check	See BASIC IGNITION SYSTEM CHECKS in this article
C-5 ESC Ignition Check	See IGNITION SYSTEM in this article.
C-6 Air Injection System	See EMISSION SYSTEMS & SUB- SYSTEMS in this article.
C-7 EGR System	See EMISSION SYSTEMS & SUB- SYSTEMS in this article.
C-8 Torque Converter Clutch (A/T)	See MISCELLANEOUS ECM CONTROLS in this article.
C-8 M/T Shift Lights (Trans)	See MISCELLANEOUS ECM CONTROLS in this article.
C-10 A/C Clutch Control	See MISCELLANEOUS ECM CONTROL in this article.
C-12 Electric Cooling Fan Control	See MISCELLANEOUS ECM CONTROL in this article.
C-18 Supercharger Boost Control	See AIR INDUCTION SYSTEMS in this article.