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 AC, Heating and Ventilation

2005 Corvette: GM TechLink: HVAC Module Service

This information applies to the 2004 Cadillac XLR and the 2005 Chevrolet Corvette and newer.Use special care when removing or installing the HVAC module for service. The HVAC module is seated between a non-removable upper and lower tie bar(fig. 11 -... Read More

1991 Corvette: Service Bulletin: Loss of Heat/Cooling Control

Subject: LOSS OF HEAT/COOLING CONTROL REVISED PROGRAMER AVAILABLE Model and Year:1991 CORVETTE WITH 5.7L ENGINESource: Chevrolet Service BulletinBulletin Number: 91-200-1A - (02/04/1991) Condition: On some vehicles the temperature of air coming from... Read More

1990 Corvette: Service Bulletin: Replacement of Isolation Diodes

#93-163-8A - REPLACEMENT OF ISOLATION DIODESMANY OF THE ELECTRICAL SYSTEMS ON OUR VEHICLES USE A DIODE TO ISOLATE CERTAIN CIRCUITS AND PROTECT THEM FROM VOLTAGE SPIKES. SOME OF THE CIRCUITS WHICH MAY USE SUCH A DIODE ARE LISTED BELOW:* A/C COMPRESSOR... Read More

1990 - 1996 Corvette: HVAC Diagnostic Codes

On 1990 to 1996 Corvettes equipped with RPO C68 (electronic climate control), it is possible to read the HVAC system diagnostic codes from the climate control panel on the dashboard. To enter the diagnostic mode, press the fan up and down arrow... Read More

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