2020 Corvette: Rushing Air Sound in PCV Tube GM TechLink May 21, 2020 Some 2020 Corvette models may have a rushing air or hissing sound coming from the engine compartment during normal engine operation. The hiss or vacuum leak sound is at the foul... Read More

Subject:   Diagnosis of Various HVAC Conditions Model and Year:  Some 2015 ATS, CTS, XTS, Corvette, Colorado, Canyon, Silverado 1500, Sierra 1500; and 2015 Escalade, Silverado 2500/3500, Sierra 2500/3500, Tahoe, Suburban, and... Read More

Subject:   1968 Corvette General Information Model and Year:   1968 Corvette Source:  Chevrolet Dealer Service Technical Bulletin Bulletin No:   68-T-43 Section:   XV Date:    April 24, 1968... Read More

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

Subject: Loss of Heating or Cooling Control - New ProgrammerModel and Year: 1990 CORVETTESource: Chevrolet Service BulletinBulletin Number: 90-378-1A - (10/25/1990)TO: ALL CHEVROLET DEALERSCondition:The customer may comment on a loss of heating or... Read More

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

Subject: HVAC Controls Intermittently Inoperative or Improperly Responding (Reset HVAC Controller)Source: Chevrolet Dealer Technical Service BulletinNumber:  #03-01-39-004 - (04/14/2003)Models: 1997-2003 Chevrolet Corvette Condition: Some... Read More

Source: GM Techlink Date:  August 2010 Subject:   Servicing Corvette HVAC Actuators Models: 2005 - 2011 Chevrolet Corvette When servicing the right-hand (RH) temperature actuator or mode HVAC actuator on the 2005-2011... Read More