Air Cond question
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,659
Likes: 4,090
From: Cape Coral, Florida
You may need to pull fuse #27 (HVAV CON) which is "hot at all times" and is located in the passengers footwell for a few minutes and reinstall...see if that works !!...also see if you have any DTC's (HVAC Actuators) stored...access them trough the DIC if you don't have a scan tool !!
p.s. You may also be low on Freon !!
p.s. You may also be low on Freon !!
Last edited by C5 Diag; Jan 14, 2020 at 08:59 AM.
Drifting
Joined: Feb 2008
Posts: 1,596
Likes: 67
From: Bahama North Carolina
You should certainly check for codes but on a C5 that is often the first symptom of a low charge. If there are no codes that would be the next thing I would check.
If you use a scanner to check it will need to be a good one. Most of the lower cost handhelds will not pick up C5 hvac codes. Use the DIC, you don't have hook any thng up and it is right in front of you.
If you use a scanner to check it will need to be a good one. Most of the lower cost handhelds will not pick up C5 hvac codes. Use the DIC, you don't have hook any thng up and it is right in front of you.
Last edited by BigGun; Jan 14, 2020 at 02:18 PM.
Le Mans Master
Joined: Sep 2003
Posts: 8,812
Likes: 2,029
From: eastern NC
Obtaining Vehicle Codes from the C5 DIC
Allen, on the outside chance you haven't ever pulled the codes before, here's how it's done...
and one other useful site...
http://www.c5forum.com/ayc/dtcdic.php
Good luck... GUSTO
and one other useful site...
http://www.c5forum.com/ayc/dtcdic.php
Good luck... GUSTO
Last edited by GUSTO14; Jan 14, 2020 at 09:58 PM.
Thread Starter
Burning Brakes
Joined: Oct 2012
Posts: 964
Likes: 119
From: Panama City, Florida
Allen, on the outside chance you haven't ever pulled the codes before, here's how it's done...
https://www.youtube.com/watch?time_c...&v=SviRjIsy9G4
and one other useful site...
http://www.c5forum.com/ayc/dtcdic.php
Good luck... GUSTO
https://www.youtube.com/watch?time_c...&v=SviRjIsy9G4
and one other useful site...
http://www.c5forum.com/ayc/dtcdic.php
Good luck... GUSTO
Burning Brakes
Joined: Jul 2014
Posts: 1,170
Likes: 253
From: Oconomowoc Wisconsin
Do you have the dual zone climate control option? If you do, check where the passenger climate control **** Is set. If it is set directly between hot (red) and cold (blue), the temperature should be the same as the drivers side. If the passenger climate control **** is turned all the way to cold, the passenger side will be colder than the drivers side.
