What is making this unusual noise and where does it come from?

10

Asked by Nov 30, 2015 at 09:04 AM about the 2008 Chevrolet Impala LT

Question type: Maintenance & Repair

2008 Impala has unusual noise that sounds like a loud motorboat. Stays on for
about a minute. Starts when we open the door. Today we slammed the
trashcan lid and it went off.

6 Answers

119,705

Check the shield around your catalytic converter it may have broken free...

3 people found this helpful.
10

Forgot to tell you car is in garage, not running, and no one in it. we open the door and bingo it goes off.

10

Not the catalytic converter. car not running when it starts making the noise when we open the door.

81,885

It's just saying hi to ya!

20

mine does that when i adjust heat controls

Best Answer Mark helpful
10

Thanks for writing. Sounds like what I found. I figured out that the outside air damper for the heater was snapping up and down. I reached in underneath the incoming air filter and pulled the damper out. The heater works mostly o:k but not quite right without it. BUT the disturbing noise is gone. - Sherwin

1 people found this helpful.

Your Answer

Impala

Looking for a Used Impala in your area?

CarGurus has 25,796 nationwide Impala listings starting at $900.

ZIP:

Chevrolet Impala Experts

  • #1
    Js08016
    Reputation
    2,350
  • #2
    Tom Demyan
    Reputation
    2,130
  • #3
    Rowefast
    Reputation
    1,940
View All

Related Models For Sale

Used Chevrolet Malibu
480 Great Deals out of 49,315 listings starting at $2,000
Used Dodge Charger
242 Great Deals out of 32,689 listings starting at $1,800
Used Honda Accord
424 Great Deals out of 101,059 listings starting at $1,200
Used Toyota Camry
761 Great Deals out of 70,900 listings starting at $1,200
Used Chrysler 300
313 Great Deals out of 19,328 listings starting at $1,899
Used Dodge Challenger
111 Great Deals out of 25,139 listings starting at $7,995
Used Nissan Maxima
200 Great Deals out of 17,499 listings starting at $1,900
Used Buick LaCrosse
225 Great Deals out of 11,995 listings starting at $1,500
Used Nissan Altima
720 Great Deals out of 70,156 listings starting at $1,495
Used Chevrolet Silverado 1500
1,781 Great Deals out of 149,286 listings starting at $1,495
Used Ford Fusion
576 Great Deals out of 61,479 listings starting at $1,500
Used Ford Mustang
270 Great Deals out of 37,082 listings starting at $2,150
Used Chevrolet Tahoe
528 Great Deals out of 36,655 listings starting at $1,375
Used Ford Taurus
186 Great Deals out of 15,917 listings starting at $981

Used Cars For Sale

2018 Chevrolet Impala LT For Sale
4,406 listings starting at $23,283
2017 Chevrolet Impala LT For Sale
60 Great Deals out of 2,589 listings starting at $13,491
2016 Chevrolet Impala LT For Sale
4 Great Deals out of 146 listings starting at $13,500
2015 Chevrolet Impala LT For Sale
3 Great Deals out of 263 listings starting at $11,200
2014 Chevrolet Impala LT For Sale
5 Great Deals out of 264 listings starting at $9,780

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.