Electrical and Ignition

Subject:   Discharged Battery Model and Year:  1968 Corvette with Base Equipment Date:   February - March 1968, ESC 68-8, Part E Source:   Chevrolet Engineering Service Letter With the increase of electrical accessory loads... Read More

Subject: Corvette Auxilliary Cooling Fan Wiring Revision Model and Year: 1979 Corvette Equipped with 5.7L (350 Cu. In.) V-8 RPO L82 and Air Conditioning Source: Chevrolet Service News Page Number:   3 Date: Volume 51, Number 1... Read More

Model Year: 1969 - 1970 Corvette Subject:  Voltage Regulator Failures in the 1970 Integrated Delcotrons Source: Chevrolet Engineering Center Number:  UPC VIy - Engine Electrical, 70-9 26 Date:  NA MISC.  ... Read More

Model Year: 1969Subject: Headlamp Opening InterferenceSource: Chevrolet Dealer Service Technical BulletinNumber: 69-T-31, Section IDate: May 6, 1969To: ALL CHEVROLET DEALERSA condition could occur on 1969 Corvettes which would restrict the opening of... Read More

Subject: Engine Miss, Hesitation, and Rough, Pierced Secondary Ignition ComponentsModel and Year: 1980-93 ALL PASSENGER CARS AND TRUCKSSource: Chevrolet Service BulletinBulletin Number: 93-35-6D - (10/01/1992) THIS BULLETIN CANCELS AND SUPERSEDES... Read More

Code #12: No Distributor Reference Pulse. Code #13: Oxygen Sensor Circuit.Code #14: Shorted Coolant Sensor Circuit.Code #15: Open Coolant Sensor Circuit.Code #21: Throttle Position Sensor Circuit.Code #23: Mixture Control Solenoid Circuit.Code #24:... Read More

Subject: CHECKING CONNECTOR TERMINAL CONTACT - METRI - PACK Model and Year: 1982-91 PASSENGER CARS AND TRUCKS Source: Chevrolet Service Bulletin Bulletin Number: 91-85-8A - (09/21/1990) TO: ALL CHEVROLET DEALERS When diagnosing an... Read More

Subject: DAMAGED ECM/PCM AND/OR MIS-DIAGNOSED ECM/PCM SYMPTOMS DUE TO INCORRECT "TAP-TESTING" PROCEDURESModel and Year:1982-91 ALL PASSENGER CARS AND TRUCKSSource: Chevrolet Service BulletinBulletin Number: 91-384-6E - (07/24/1991) CONDITION: Because... Read More

Source:  Chevrolet Dealer Service BulletinNumber: 91-14-8ASubject: Parasitic Drain on Battery Ammeter Connecting ProcedureModel Year: 1982-91 All Passenger Cars and TrucksVehicles that have one or more on-board solid state control module (such... Read More

Code #12:  Normal System No Codes.Code #13:  Oxygen Sensor Circuit.Code #14:  Coolant Sensor Circuit Low.Code #15:  Coolant Sensor Circuit High.Code #21:  Throttle Position Sensor High.Code #22:  Throttle Position Sensor... Read More