AC Issue
Thread Starter
Racer
Joined: Feb 2016
Posts: 490
Likes: 1
From: Dallas Texas
AC Issue
So yet again my 98 C5 is having an issue the A/C doesnt work when pushing the A/C button it just flashes.....Checked the fuses they are good....Someone help please....Im so beyond frustrated with this car Im about to give it back to the dealership I got it from......
Instructor
Joined: May 2015
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From: Hayward California
Sys
Acct Suspended APR 2026 by request
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2020 Corvette of the Year Finalist (performance mods)
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sounds like it is either low or completely out of refrigerant... if you recently bought it take it back and see if they will help you... they will have to charge it first and then check for leaks
Thread Starter
Racer
Joined: Feb 2016
Posts: 490
Likes: 1
From: Dallas Texas
Acct Suspended APR 2026 by request
Joined: Dec 2010
Posts: 10,367
Likes: 1,272
2020 Corvette of the Year Finalist (performance mods)
C5 of Year Winner (performance mods) 2019
did they make sure it was full?... is the hvac displaying an accurate outside air temp?... if that isn't reading properly it could cause the ac to not work
Thread Starter
Racer
Joined: Feb 2016
Posts: 490
Likes: 1
From: Dallas Texas
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Ha Ha, sounds like you diagnosed your problem.
Acct Suspended APR 2026 by request
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2020 Corvette of the Year Finalist (performance mods)
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that will also make it display kilometers instead of mph... it makes your car seem really fast, some import guys like to do that
Le Mans Master
Joined: Sep 2013
Posts: 8,900
Likes: 1,072
From: Wisconsin
Given the B0363 code you have the climate control HVAC system. In the display window for the HVAC system there should be an EXT temp shown with the key ON. What does t read and how close is it to the external temp??
If it reads a very low number like 32 then the ext temp sensor has failed and the AC is NOT going to run because it thinks the outside temp is too cold.
Th B0363 MAY be able to be cleared by following the steps in the following thread:
https://www.corvetteforum.com/forums...-for-free.html
If the code keeps coming back then the Left side HVAC actuator may need to be replaced.
Let's see. A 1998 vehicle makes the car about 18 years old....
Any 18 year old vehicle is going to have its own set of problems and components that fail. If you need a higher reliability daily driver perhaps a new KIA which will have a warranty and probably would cost around the same as the 98 Vette would be a better choice.
If it reads a very low number like 32 then the ext temp sensor has failed and the AC is NOT going to run because it thinks the outside temp is too cold.
Th B0363 MAY be able to be cleared by following the steps in the following thread:
https://www.corvetteforum.com/forums...-for-free.html
If the code keeps coming back then the Left side HVAC actuator may need to be replaced.
Let's see. A 1998 vehicle makes the car about 18 years old....
Any 18 year old vehicle is going to have its own set of problems and components that fail. If you need a higher reliability daily driver perhaps a new KIA which will have a warranty and probably would cost around the same as the 98 Vette would be a better choice.
Well said. Any used car will have issues, an 18 year old car will probably have more.
1/4 mile/AutoX
Joined: Jun 2014
Posts: 11,439
Likes: 2,183
From: Buffalo Texas
mine did the same this past summer went test by test in the repair manual, told me it was the relay,switched relay with fog light and the AC worked .then bought a new relay, life is good !!!!!!!
Thread Starter
Racer
Joined: Feb 2016
Posts: 490
Likes: 1
From: Dallas Texas
Given the B0363 code you have the climate control HVAC system. In the display window for the HVAC system there should be an EXT temp shown with the key ON. What does t read and how close is it to the external temp??
If it reads a very low number like 32 then the ext temp sensor has failed and the AC is NOT going to run because it thinks the outside temp is too cold.
Th B0363 MAY be able to be cleared by following the steps in the following thread:
https://www.corvetteforum.com/forums...-for-free.html
If the code keeps coming back then the Left side HVAC actuator may need to be replaced.
Let's see. A 1998 vehicle makes the car about 18 years old....
Any 18 year old vehicle is going to have its own set of problems and components that fail. If you need a higher reliability daily driver perhaps a new KIA which will have a warranty and probably would cost around the same as the 98 Vette would be a better choice.
If it reads a very low number like 32 then the ext temp sensor has failed and the AC is NOT going to run because it thinks the outside temp is too cold.
Th B0363 MAY be able to be cleared by following the steps in the following thread:
https://www.corvetteforum.com/forums...-for-free.html
If the code keeps coming back then the Left side HVAC actuator may need to be replaced.
Let's see. A 1998 vehicle makes the car about 18 years old....
Any 18 year old vehicle is going to have its own set of problems and components that fail. If you need a higher reliability daily driver perhaps a new KIA which will have a warranty and probably would cost around the same as the 98 Vette would be a better choice.
Last edited by TXC5CHICK; Mar 9, 2016 at 04:57 PM. Reason: typo
Melting Slicks
Joined: Aug 2011
Posts: 2,423
Likes: 200
From: Atlanta GA
THat is a left actuator code. Clear it and see if it works temporarily. If it does, but returns, you will have to replace the actuators. Might as well replace both while you have the dash out.