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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1990: Service Bulletin: L98 and LT5: Revised Air Conditioning Control Circuit Diagnosis
Subject: REVISED AIR CONDITIONING CONTROL CIRCUIT DIAGNOSIS Model and Year: 1990 CORVETTE WITH 5.7L L98 AND LT5 ENGINES Source: Chevrolet Dealer Service Bulletin Bulletin Number: 90-400-6E THIS BULLETIN CANCELS AND SUPERSEDES DEALER SERVICE BULLETIN NO. 91-400-6E. THE BULLETIN NUMBER HAS BEEN CO ...
1990: Service Bulletin: Loss of Heating or Cooling Control
Subject: Loss of Heating or Cooling Control - New Programmer Model and Year: 1990 CORVETTE Source: Chevrolet Service Bulletin Bulletin Number: 90-378-1A - (10/25/1990) TO: ALL CHEVROLET DEALERS Condition: The customer may comment on a loss of heating or cooling control. The temperature of air co ...
1991: Service Bulletin: Loss of Heat/Cooling Control
Subject: LOSS OF HEAT/COOLING CONTROL REVISED PROGRAMER AVAILABLE Model and Year:1991 CORVETTE WITH 5.7L ENGINE Source: Chevrolet Service Bulletin Bulletin Number: 91-200-1A - (02/04/1991) Condition: On some vehicles the temperature of air coming from the HVAC system, with C68 option, cannot b ...