Supporting Vendors / Dealers - Advertising - Shop

2014 Corvette: GM TechLink Article: HVAC Temperature Fluctuations

Source:  GM TechLink
Date:  April, 2014

On some 2014 Corvettes built prior to November 15, 2013 the HVAC temperature may fluctuate more than expected when the set temperature is changed by only a few degrees or less. A minor change in the set temperature may cause the HVAC system to blow warmer or cooler than desired. Do not replace parts for this condition. A revised HVAC control module calibration has been released to provide an improvement to this condition.

  • Determine the build date of the vehicle in order to confirm which module(s) require an update.
    • If the build date is November 5, 2013 or later, update the HVAC control module.
    • If the build date is prior to November 5, 2013, determine if the latest version of #PI1101 (labor operation code 2880178) has been performed.
    • If the latest version of #PI1101 has been performed, update only the HVAC control module.
    • If the latest version of #PI1101 has not been performed, perform the procedure as instructed. Submit a warranty transaction for #PI1101 only.
  • The revised HVAC control module calibration will improve the condition noticeably, but if there are still concerns after the calibration has been updated, there are settings that can be made to further improve the operation. In the Vehicle Settings menu, set the Auto Fan Max Speed to Low or Medium instead of High. Go to Vehicle > Climate and Air Quality > Auto Fan Max Speed. By selecting a reduced blower speed, the system will have smoother temperature changes as it attempts to adjust the temperature in the car.
  • It is vital to the operation of the system that all programming events be completed as instructed in the appropriate module Programming and Setup documents.System operation will not improve if procedures are not completed as instructed in the Service Information.

Thanks to Jeremy Richardson

5 (1)
Article Rating (1 Votes)
Rate this article
Attached Files
There are no attachments for this article.
Comments
There are no comments for this article. Be the first to post a comment.
Name
Email
Security Code Security Code
Related Articles RSS Feed
2015 Corvette: Service Bulletin: Instrument Cluster Driver Information Center Goes Blank or Analog Speedometer Inaccurate
Viewed 1460 times since Tue, Aug 4, 2015
2014 Corvette: GM TechLink Article: Blank Touch Screen after Start-up and in Reverse
Viewed 5147 times since Mon, Jun 30, 2014
2005 - 2016 Corvette: 15521 - Customer Advisory Letter - Side Door Release Operation - Phase 2 Mailing
Viewed 1102 times since Wed, Apr 27, 2016
2015 Corvette: GM TechLink: Incorrect Song Information Displayed
Viewed 914 times since Mon, Mar 16, 2015
2014 - 2016 Corvette: Service Bulletin: #16-NA-188: Loss of Radio Controls and/or HVAC Controls - (Jun 29, 2016)
Viewed 1034 times since Thu, Jun 30, 2016
2014 Corvette: GM TechLink Article: Power Memory Seat Operation
Viewed 4134 times since Mon, Jun 30, 2014
2014 - 2017 Corvette: GM TechLink: Repeat DTCs P2096 and P2098
Viewed 1151 times since Thu, Oct 26, 2017
2016 Corvette: Service Bulletin: #16-NA-219: GPS Inoperative, Red Line Across GPS Indicator, or the Location is Stuck in Warren Michigan
Viewed 1743 times since Fri, Jul 1, 2016
2000 - 2018 Corvette: Service Bulletin: #PIP4925A: SES Light with Fuel Trim and or Oxygen Sensor Codes - (Mar 21, 2017)
Viewed 1025 times since Wed, Mar 22, 2017
2015 - 2016 Corvette: Service Bulletin: #16-NA-107: DTC U0184 Set, Radio Inoperative, Blue Screen, AM Clipping Noise, HD On/Off Status Not Retained in Stations, Time Lag on Transitions, No Audio with Internal Amp, Park Assist Symbol Position Wrong i
Viewed 1177 times since Thu, Sep 15, 2016