Chirping Noise
#1
Chirping Noise
I have an 07' Tahoe LT. For the past 6 months it has been making this chirping sound, which the dealership says its normal. I and many others disagree.[]Here's the details on the noise: Upon a cold start (6 or more hours not started) chirping starts. The sound is comming from the a/c compressor area. The dealership has replaced all belts including a/c belt and still the noise[sm=wtf.gif]. I have questioned the pulleys, and they say they are fine. The noise gets even louder when the a/c is turned on and when vehicle is engaged into gear. I also notice the noise when driving 25-30 mph, espically when the vehicle is in a higher gear. It almost sounds as if something is loose (ie: 2 pieces of metaltouching causing this noise) If anyone has any suggestions or comments on how to remedy this, please reply.
Thank you,
Brandon R
Thank you,
Brandon R
#2
RE: Chirping Noise
Welcome Brandon,
Have your dealer reprogram your PCM with a newly released (yesterday 10/01/2007) software calibration.
The cause of the chirp is the A/C compressor pushing liquid (as apposed to gaseous) refrigerant thru the system, the new calibration will adjust the cycling of the compressor to eliminate this noise.
They can reference STB # 07-01-38-010 for further instruction/information.
Dave
Have your dealer reprogram your PCM with a newly released (yesterday 10/01/2007) software calibration.
The cause of the chirp is the A/C compressor pushing liquid (as apposed to gaseous) refrigerant thru the system, the new calibration will adjust the cycling of the compressor to eliminate this noise.
They can reference STB # 07-01-38-010 for further instruction/information.
Dave
#4
RE: Chirping Noise
Thanks for the info Dave. I have passed that info on to the guys at the dealership. They are going to try that first thing in the am. I will let you know what they say.....
#5
RE: Chirping Noise
I'll be looking forward to hear how it turns out.
I assure you folks that GM wants you happy with your new vehicle purchase, they are expensive but they really are fabulous machines when you think about it.
I assure you folks that GM wants you happy with your new vehicle purchase, they are expensive but they really are fabulous machines when you think about it.
Thread
Thread Starter
Forum
Replies
Last Post
Kevinh111
Silverado & Fullsize Pick-ups
6
October 13th, 2009 8:54 PM