Air conditioner problems

WMELVIN

MEMBER
1998 BUICK LESABRE

After changing the battery I no longer get air out the dash vents. I have windshield and floor air. I can redirect it to either of those locations or both at once. I dropped the glove box door and nothing moves there. I also checked, there is vacuum present. I have also removed fuse 9C for a reset and it's no different. It is automatic climate control.

I do get a light but no noise that I can hear other than the fan running. The vent led works as well as the others. If I turn on the recirculate button it lights but air comes from the windshield vents and the floor. It blows cold air also.

The person I purchased the car from said this started when she replaced the battery but I have been through all that procedure and nothing works. Should I be able to move the control arm behind the glove box manually?

I do have battery voltage between those two wires. The programmer is bad is it something I can replace and do you know where to find it for the best price?

Thanks in advance for your help.

2 Replies

93LESABRE

MEMBER
2 POSTS

I had the same problem with my lesabre and it turned out to be just a vacuum hose that came un-done so check your vacuums and if there are any undone then that might be your problem

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Monday, March 22nd, 2021 AT 1:14 PM

KEN L

MASTER CERTIFIED MECHANIC
42,960 POSTS

The passenger mix link for the blend door which is what brings in cold air and directs it through the heater core to make it hot. Now there is a HVAC programmer just in front of that it is a box with the vacuum lines and two connectors on it this is that we need to test as that tells the system what to do.

Now here is a reset procedure to do when the battery has been changed or died.
Turn key on then off see if it resets if not then check fuse 9C if it is good then then make sure key is off and disconnect the programmer. With a volt meter check for voltage between the black and white wire (E1) and the orange wire (E13).

You should have battery voltage between these two wires if not then fix the fuse or short if it all good then make sure there are no harness problems and replace the programmer. Here is a pic of the HVAC system as well. Let me know what you find.

The programmer is a common problem in these cars and can you can get one through Amazon for $365.00

Here is a better image on how to replace it. (Below) Please let us know if you need anything else to get the problem fixed.

Image (Click to make bigger)