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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

Model Year: 1956-1968Subject: Connecting Rod Bolt UsageSource: Chevrolet Service NewsDate: August, 1968A new connecting rod assembly incorporating a 7/16" diameter connecting rod bolt is being used in late built Corvette R.P.O. L-88 (427 cu. in., 430... Read More

Model Year: 1974-1975Subject: Stripped Speedometer Driven Gear, 1974-1975 Corvette with 4-Spd. TransmissionSource: Chevrolet Dealer Service Technical BulletinNumber: 75-T-3Date: Jan. 17, 1975TO: ALL CHEVROLET DEALERSOn 1974 and 1975 Corvettes with 4... Read More

Subject: POOR ENGINE PERFORMANCE CATALYTIC CONVERTER REPAIR Model and Year: 1981 Corvette Source: Chevrolet Dealer Service Bulletin Bulletin Number: 82-T-144 This bulletin supersedes bulletin 81-T-76, 81-T-76 Supplement and 82-T-58. ... Read More

Subject: INFORMATION ON STATE EMISSION TESTING FOR ALL MODELS Model and Year:1982-91 ALL PASSENGER CARS AND TRUCKSSource: Chevrolet Service BulletinBulletin Number: 91-344-6E - (06/11/1991) THIS BULLETIN CANCELS AND SUPERSEDES DEALER SERVICE BULLETIN... Read More

Model Year: 1968 Corvette 427 with Air ConditioningSubject: Spark Plug Removal TipSource: Chevrolet Service NewsDate: August, 1968Recent studies indicate that the two forward right bank spark plugs located under the air conditioning compressor on... Read More

Subject: 1970 Carburetor Linkage and Accelerator Controls Model and Year: 1970 Chevrolet and Nova Source: Chevrolet Service News Date: August, 1970 Pages: 2, 6 The 1970 model Chevrolet and Nova accelerator controls were changed in... Read More

Subject: OIL FILTER LEAKAGE PROPER INSTALLATION PROCEDURE Model and Year: 1981-90 CHEVROLET MODELSSource: Chevrolet Service BulletinBulletin Number: 90-216-6 - (05/12/1989) THIS BULLETIN CANCELS AND SUPERSEDES DEALER SERVICE BULLETIN NO. 90-187-6,... Read More

Subject: ENGINE COOLANT USAGE ANTI-FREEZE SPECS CHANGE Model and Year: 1982-1983 VehiclesSource: Chevrolet Service BulletinBulletin Number: 83-I-26 - (01/17/1983) Chevrolet Motor Division has in past model years recommended use of ethylene glycol... Read More