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 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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This Knowledgebase contains information from other Corvette owners and enthusiasts as well as professional engineers, literature, and service technicians (where noted). Any information used from this Knowledgebase is used at your own risk. Although we do our best to screen and verify the information provided here, the Corvette Action Center is not responsible for any inaccuracy in this Knowlegebase. Always consult your service manual and/or a qualified automotive service technician before conducting automotive repairs. For further information, please review our Legal Disclaimer.
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 Technical Article: The Care and Cleaning of Stainless Steel
...removing free-iron contamination on stainless steel surfaces that may have been picked up from metalworking tools; and for removing general accumulation of dirt, grime and surface stains that occur du...
- Service Bulletin: Fluid Leak Detection
...in for fluid leaks from the engine, transmission, cooling system, etc., locating the source of the l...steering and rear axle oil. these special dyes do not harm any GM recommended fluids and usually dis...
- Buying: Buying a Corvette and What to Look For
Description: Buying a used Corvette can be quite intimidating if your new to Vettes and not sure what all the jargon is or what to look for. Use our handy check list (printable) to help you purchase y...
- 1953 - 1954: Zone Letter: Air Flow Heater Problems
...om Chevrolet owners that the Air Flow Heater will not heat properly and in some instances on 1954 mo...ce the "Pellet type" 180 degree thermostat in the cooling system with the new 170 degree "Bellows ty...
- 1966: Service News: Air Conditioning Thermostatic Expansion Valve Replacement
...isted on page 1A-57 of the 1966 Chassis Service Manual.
Purge system of refrigerent.
Drain cooling system and remove radiator supply tank.
Disconnect heater hoses from heater core.
Disc...
- 1965: Engineering Service Letter: 1965 Corvette 350 H.P. Factory A/C Operating Temperatures
...wner who has a Corvette who feels his unit should not run over 190° temperature with the air con...olant experienced. Complete specifications on our cooling system are covered on Page 13 in the Power...
- 1969 - 1976: Service Bulletin: Air Conditioning Compressor Drive Belt to Radiator Hose Interference
...rque to 50 ft.-lbs.
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur ...
- 1976: Service Bulletin: Heater Hose Clamp Interference with A/C Evaporator Inlet Pipe
... Motors Corporation
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur ...
- 1984: Service Bulletin: No Heat - A/C Control Unit
... selector lever in the full cold position and open with the lever in any other position. Water will not flow through the heater core when the valve is closed (vacuum applied). Note that the valve actu...
- 1988 - 1992: Service Bulletin: A/C Compressor Sealing Washer (New Design)
...essor rear head and the air conditioning hose assembly block (suction discharge block assembly). Do not mistake this as a loose connection or a mis-assembled joint.
Sealing washers are used in produ...
- 1990 - 1996: HVAC Diagnostic Codes
...odes from the climate control panel on the dashboard.
To enter the diagnostic mode, press the fan up and down arrow buttons at the same time until -00 appears on the digital readout.
One you...
- 1990: Service Bulletin: L98 and LT5: Revised Air Conditioning Control Circuit Diagnosis
...has been detected by the ECM, the cooling fan(s) will be turned "ON... use by professional technicians, not a "do-it-yourselfer". They ar...
- 1990: Service Bulletin: Loss of Heating or Cooling Control
... The customer may comment on a loss of heating or cooling control. The temperature of air coming fro...temperature of air coming from the HVAC system cannot be changed. A code 01 or 02 may also be set in...
- 1991: Service Bulletin: Loss of Heat/Cooling Control
... coming from the HVAC system, with C68 option, cannot be changed. A code 01 or 02 may also be set in...or full cold position, causing loss of heating or cooling control, because the mix motor has not rec...
- 1997 - 2003: Service Bulletin: HVAC Controls Intermittently Inoperative or Improperly Responding (Reset HVAC Controller)
...tomer with a copy of this bulletin so that if the condition occurs in the future, the customer will not need to return to the dealership.
© Copyright General Motors Corporation. All Rights Res...
- 1997: Service Bulletin: Blower Motor - Run on When Ignition is Off
Source: Chevrolet Dealer Service Bulletin Number: 83-11-10 SUBJECT: BLOWER MOTOR RUN-ON WHEN IGNITION IS OFF (REPLACE CONTROL ASSEMBLY) MODELS: 1997 BUICK CENTURY, REGAL 1997 CHEVROLET CORVETTE CON...
- 2005: Service Information: HVAC Module Service
...chLink, September 2004
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur ...
- 2006: Electrical Schematic: AC Compressor
...the 2006 AC compressor. General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur ...
- 2006: Electrical Schematic: Automatic AC System
...06 automatic AC system. General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur ...
- 2006: Electrical Schematic: Cooling Fans
...l schematic for the 2006 Corvette cooling fans. General Motors bul... use by professional technicians, not a "do-it-yourselfer". They ar...
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