Knock Sensor Circuit - Manual Update
Number: 91-524-8ASection: 8A
Date: JAN. 1993
Corporate Bulletin No.: 218120
ASE No.: A6
Subject:
DETONATION (KNOCK) SENSOR CIRCUIT
Model and Year:
1991 CORVETTE
SERVICE UPDATE
The identification of the Electronic Control Module (ECM) Connector D (Brn) for the Knock Sensor (Terminal 20, Circuit 496) is incorrect. It should be identified as Connector B (Red), Terminal 20, Circuit 496.
The following is a revised schematic for the Sequential Fuel Injection: V8 VIN engine code "J" for Section 8A-22-3.
Please update your copies of the 1991 Service Manuals.
Manual Update Page. 8A-22-3.