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1984 Corvette: ECM Codes

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

1985 - 1991 Corvette: ECM Codes

Code #12: Normal No Codes.Code #13: Open 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 Low.Code #23: Manifold Air... Read More

1990 Corvette: Service Bulletin: SIR Diagnostics and Procedures to Prevent Codes 16 and 26 Due to Corrosion Revised

Subject: SERVICE MAN. UPDATE SEC.9J A/B REV. SIR DIAGNOSTIC PROCEDURE Model and Year: 1990 CORVETTE Source: Chevrolet Service Bulletin Bulletin Number: 90-436-9J - (11/07/1991) Some 1990 Corvettes have set SIR Sensor Codes 16 and 26. The... Read More

1986 - 1987 Corvette: Service Bulletin: Service Engine Soon Light - Code 36 PFI Engines (VIN Codes F and 8)

Model Year: 1986-87 CAMARO, CORVETTE WITH PFI ENGINES (VIN CODES F AND 8) Source: Chevrolet Dealer Service Bulletin Bulletin Number: 87-99, Section 6E Date: April 1987 TO: ALL CHEVROLET DEALERS CONDITION: There have been reports of... Read More

1990 Corvette: Service Manual Update: Sec. 6E3 Driveability and Emissions Revised Code 34 Chart

Subject: SERV MANUAL UPDATE-SEC.6E3 DRIVEABILITY AND EMISSIONS Model and Year: 1990 CORVETTE WITH 5.7L L98 (VIN CODE 8) ENGINE Source: Chevrolet Service Bulletin Bulletin Number: 90-350-6E - (09/13/1990) The attached Code 34 diagnostic... Read More

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