• This section is for help and assistance with 2018 and NEWER Buick Regals. If you need assistance with a 2011-2017 Buick Regal, CLICK HERE. If you need assistance with a 2010 or older Buick Regal, CLICK HERE. This notice may be dismissed by clicking the X in the right corner.

A/C Compressor Noise?

TourX

New member
14
3
3
Buick Ownership
2019 Regal TourX
I'm guessing here, but it was a flippant comment like "if it annoys you that much just trade it in for another car"? Or, we'll get you a new car and do whatever to make this right? I'm guessing the former? Owned three Lexus vehicles over 20 years, and had some issues with the last car and walked away from the brand when they failed to fix an out of warranty problem for a third time without me paying for the same repair for the third time. Mechanics now just replace whole systems, they can't diagnose what's causing the problem evidently, in my case it was an electronic power steering issue and their only solution was to replace the entire rack three times...
 

768mph

Member
88
92
18
Buick Ownership
2020 Tourx Essence
UPDATE:

Buick CSR called me back and I’ll leave it simple and short.
“Buick has no fix and maybe they’ll come out with a recall with a solution.”

Case closed on my part.

Spoke with my father and he suggest installing a dielectric junction in line with the AC line. That will absorb the noise and cure the issue. Way more invasive but could be a possibility.
 

TourX

New member
14
3
3
Buick Ownership
2019 Regal TourX
I've noticed it is only really annoying to me when the AC is on and the fan speed is low ( I keep mine on auto) and doesn't drown out the AC line noise, I'm just going to live with it rather than have them tear up my car, it never goes back exactly like new. I am going to have the re-flash/software update on my nav head unit to solve various problems with pre-sets greying out and backup lines disappearing on reverse camera, and nav system periodically not working. Fingers crossed the refresh solves those issues, along with my window regulator replacement I'm just going to do normal maintenance going forward with 1 1/2 year left on my warranty. Good luck to you.
 

94cruiser

Sustaining Member
588
87
28
Buick Ownership
Red needle TourX
No fix (but a recall with a) solution.

Which way is it then?
______________________________
 

RSE

New member
2
1
3
Buick Ownership
2019 Sortback Essence
I had the compressor replaced, and the noise is less, but is still present. I can't find it now, but there was an article (TSB?) on the Cadillac ATS with the LTG motor, and compressor noise. It was the way the compressor was mounted to the block, that transmitted the vibration.
 

TourX

New member
14
3
3
Buick Ownership
2019 Regal TourX
The rattle may be the skid plate was not screwed on right after an oil change. Happened to me.

Greyed out radio presets - sounds like you need the infotainment updated. I had this exact annoying issue for months upon months. It was fixed with 22.9 update, now they are on 22.11 fyi. Only the dealer can perform this, note it is free so don't let them try to charge you for it. If they try, I'd leave immediately and find a different dealer as you're not dealing with an honest one. Dealer replaced my antenna and HU [before 22.9 came out] trying to fix the presets issue...I told them it wouldn't work and it didn't. If you already have the 22.9 update, ignore all the above...and in that case I'd say yeah you need your HU and/or antenna replaced.
Had the software update a couple days ago, so far so good on radio pre-sets, back up camera lines and Nav. Thanks again. My XM radio stopped working a year ago and they fixed it by replacing my antenna, they didn't replace the head unit. I wonder if the software update back then might have been enough to fix those problems for us? Well anyway, fingers crossed everything continues to work as intended.
 

TourX

New member
14
3
3
Buick Ownership
2019 Regal TourX
I had the compressor replaced, and the noise is less, but is still present. I can't find it now, but there was an article (TSB?) on the Cadillac ATS with the LTG motor, and compressor noise. It was the way the compressor was mounted to the block, that transmitted the vibration.
Glad it reduced the noise for you, I think I'm just going to let mine be, it's only really annoying in certain situations, like when the auto temperature setting is very close to the outdoor temperature. Thanks for the info on the ATS.
 

CNYmetalGuy

Member
30
18
8
Syracuse NY/Las Vegas NV
Buick Ownership
2018 Buick Regal Sportback Preferred II
I thought this might be the noise I am hearing in 18 Sportback Pref 2. But my noise is different from the video. Mine usually happens when my car is stopped, and its a higher pitched screeching like sound. I thought it had something to do with bluetooth but no, If I can capture it with my phone I will. Just very sporadic
______________________________
 

abizzle

Sustaining Member
784
310
63
Denham Springs, LA
Buick Ownership
2018 Regal Sportback Essence
I noticed some noise yesterday when I backed into the carport. I’m pretty sure it’s the same noise captured in the videos, but I’ll make sure sometime today when I leave home.

I was getting anxious because I thought my warranty was about to expire, but now I realize they go by the original in-service date. In that case I still have another 6 months.
 
Looking to update and upgrade your Buick luxury automobile? Look no further than right here in our own forum store - where orders are shipped immediately!

96americanluxury

Active member
101
99
28
Buick Ownership
1996 Buick Park Avenue 2020 Buick Regal Sportback Essence
I still contemplate having the a/c condenser and evaporator replaced as they are the only components left that have not been replaced.

However, especially with the evaporator, I'm concerned it will cause more noises (dash rattles, etc) than it will solve.

My dealer has a 2021 GMC Canyon in right now that has a similar whine noise. T.A.C. has advised they have found debris/burrs causing restrictions in the heater core causing noise as well as water pumps. Although neither is directly related to the A/C system, perhaps it is a resonance thing? Waiting to see if they are able to fix the Canyon based on T.A.C.'s answer.
 

TourX

New member
14
3
3
Buick Ownership
2019 Regal TourX
I still contemplate having the a/c condenser and evaporator replaced as they are the only components left that have not been replaced.

However, especially with the evaporator, I'm concerned it will cause more noises (dash rattles, etc) than it will solve.

My dealer has a 2021 GMC Canyon in right now that has a similar whine noise. T.A.C. has advised they have found debris/burrs causing restrictions in the heater core causing noise as well as water pumps. Although neither is directly related to the A/C system, perhaps it is a resonance thing? Waiting to see if they are able to fix the Canyon based on T.A.C.'s answer.
Keep us posted, thanks.
 

94cruiser

Sustaining Member
588
87
28
Buick Ownership
Red needle TourX
any update?
______________________________
 

SportbackLegacy

New member
26
1
3
Buick Ownership
2018 Buick Regal Sportback Preferred
I drive a 2018 Sportback Preferred with 175k and I always thought the noise came from the radiator fans or the mounts. Or maybe something isn’t getting the proper voltage to maintain the system. I’m not a mechanic, but I feel like it’s a moving part that’s causing that noise. It sounds almost like the blower motor has a piece stuck until you turn the A/C off.
 
Top