This Knowledgebase has been developed to cover the most frequently asked questions about Corvettes. Using our system, you can search for topics separated into categories by Corvette generation. Some of the information here comes directly from Chevrolet Service News publications, Service Bulletins, Recall Notices and other technical sources as indicated.
This Knowledgebase contains most service bulletins and recall notices for all model years. If you can't find a particular service bulletin here, try our Corvette Recall Notice & Service Bulletin Search Form which is linked to the National Highway Transportation Safety Administration. You will only be able to view a brief description of the bulletins from the NHTSA but must pay a fee to acquire the entire document.
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- 1968: Service Bulletin: Windshield Wiper System - Operation and Diagnosis
Model Year: 1968 Subject: 1968 Corvette Windshield Wiper System - O...um relay when the wiper switch is turned on or off, is mounted on t...s located. Note:
An interim change will incorporate a telltal...
- 1969: Service Bulletin: Headlamp Opening Interference
Model Year: 1969 Subject: Headlamp Opening Interference Source: Chevrolet Dealer Service Technical Bulletin Number: 69-T-31, Section I Date: May 6, 1969 To: ALL CHEVROLET DEALERS A condition could o...
- 1974: Service News: Removal of Corvette Front Speakers
Subject: Shop Manual Procedure Revised - Removal of Corvette Front Speakers 1974 Models Model and Year: 1974 Corvette Source: Chevrolet Service News Bulletin Number: Volume 45, November 1973, Numbe...
- 1980 - 1993: Service Bulletin: Engine Miss, Hesitation, and Rough, Pierced Secondary Ignition Components
Subject: Engine Miss, Hesitation, and Rough, Pierced Secondary Ignition Components Model and Year...t from the spark plug, twist the flanged boot 1/2 turn then pull on the boot only to remove the wire...
- 1981: ECM Codes
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....
- 1981: Service Bulletin: Glow Around Wiper Switch Rework Wiper Switch Bezel
Subject: GLOW AROUND WIPER SWITCH REWORK WIPER SWITCH BEZEL Model and Year: 1981 Corvette Source: Chevrolet Dealer Service Bulletin Bulletin Number: 81-I-19 SOME EARLY 1981 CORVETTES WITH SILVER, RED...
- 1982 - 1991: Service Bulletin: Checking Connector Terminal Contact - Metri-Pack
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 C...
- 1982 - 1991: Service Bulletin: Damaged ECM/PCM Mis-Diagnosis Due to Incorrect "Tap-Testing" Procedures
...MAGED ECM/PCM AND/OR MIS-DIAGNOSED ECM/PCM SYMPTOMS DUE TO INCORRECT "TAP-TESTING" PROCEDURES Model and Year:1982-91 ALL PASSENGER CARS AND TRUCKS Source: Chevrolet Service Bulletin Bulletin Number: 9...
- 1982 - 1991: Service Bulletin: Parasitic Drain on Battery Ammeter Connecting Procedure
Source: Chevrolet Dealer Service Bulletin Number: 91-14-8A Subject: Parasitic Drain on Battery Amme...LOCK" position and all electrical accessories are turned off and all doors are closed.
- 1982: 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: ...
- 1982: Service Bulletin: Spark Plug Fouling/Driveability
Model Year: 1982 Corvette with Federal Emissions Subject: Spark Plug Fouling/Driveability Source: Ch...e boots from spark plugs. Twist the boot one-half turn before removing, and pull on the boot only to...
- 1973: Electrical Schematics
Attached below are copies of the wiring diagrams from the 1973 factory service manual. These diagrams are of the main wiring harness running from front to back.
- 1973: Electrical Schematic: Engine
Attached below is the electrical schematic for the engine in the 1973 Corvette.
- 1973: Electrical Schematic: Automatic Transmission Kickdown Switch
Attached below is the electrical schematic for the automatic transmission kickdown switch in the 1973 Corvette.
- 1973: Electrical Schematic: Mono and Stereo Radio System
Attached below is the electrical schematic for the mono and stereo radio systems in the 1973 Corvette.
- 1973: Electrical Schematic: Rear Window Defogger
Attached below is the electrical schematic for the rear window defogger system on the 1973 Corvette.
- 1979: Service Bulletin: Halogen Sealed Beams
Subject: Halogen Sealed Beams Model Year: 1979 Chevrolet and Corvette Date: January 1979 Bulletin Number: 79-I-4, Section XII
TO: ALL CHEVROLET DEALERS
This Bulletin is being reissued for P...
- 1978 - 1979: Service Bulletin: Power Antenna Operation
1967 Corvette keys are unique to this model year. The
key "raceway" for 1967 and the cutting codes were not used in any prior
Chevrolet model years. ---------------------------------------------...
- 1984 - 1989: Digital Dash Cluster Repair
From Bob Golden:
My name is Bob Golden and my home e-mail is <... instrument cluster repaired or exchanged can be a costly item.If i... all you need to do is change the bulbs.These bulbs can be changed ...
- 1984 - 1996 Speedometer Gear Applications and Part Numbers
# of Teeth
# of Teeth
Vehicle Speed Sensor
MD8 with Export (VB4, VD1, VE1, VT7)
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