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Discussion Starter · #1 ·
Just took delivery on a black AWD RS with all the bells and whistles and can't wait to get her out on the road. Hoping it gets better MPG than my previous 2018 Jeep Compass Trailhawk got (14PMG!!). Just took it for a little drive down the street there is a faint whistle like noise, you can hear it when the car is decelerating most I think - should I be worried? Or do you think it's something that might go away once the car is broken in a little? I guess it could be the breaks working or something, but it happens before I even push the breaks. The guy who delivered it said it could be the turbo taking in some air though, but I honestly have no idea. Would love some input if anybody has any! Looking forward to being a part of this community!
 

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I dont notice any whistling at low speed. I do hear some when i am on the highway, but it sounds like its coming from the back. I was guessing that maybe it was the antenna.

Of course this noise goes away when i turn up the radio 馃槀
 

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'21 TrailBlazer LT AWD
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Welcome to the forums and congrats on the purchase of your new RS!! My Trailblazer LT AWD is making the same noise.. I use it as a pedestrian warning system as my dealer can鈥檛 seem to duplicate it.

Funny to suggest turbo whistle noise upon deceleration.. I鈥檓 running up on 9K miles
 

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Discussion Starter · #4 ·
Yeah I didn't really buy that. lol. Also, stop/start isn't working either - I did have the air on quite high today though. My previous car had this function too, and sometimes it took some time for the battery to charge. Don't really miss it, but just want to make sure that everything works!
 

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Yeah I didn't really buy that. lol. Also, stop/start isn't working either - I did have the air on quite high today though. My previous car had this function too, and sometimes it took some time for the battery to charge. Don't really miss it, but just want to make sure that everything works!
If you are blasting the air then start/stop wont work.
 

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2021Trailblazer RS AWD Scarlet Red Metallic
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If you are blasting the air then start/stop wont work.
The engine needs to run when the AC compressor is running so auto start/stop is disabled.
 
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Not blasting it. Have it set to like 67 and blowing at less than half of what it's capable of.
doesnt matter.. as long as its required then its going to keep running. will be the same in the winter also. if you run without any kind of climate control then it shuts off pretty quick.
 

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Congrats 馃巿! Sorry about the noise! My brakes squeak when I back out of garage in morning but then not when I am driving! Dealer says it is moisture and normal
 
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