May be time to change your in cabin air filter

Maintenance/Repairs
1

This is a good time to check your owners manual to see is you have one, and replace if needed. Pics to follow.

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Cabin filter pics

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Blower and filter out of car.

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And this is which brand of vehicle?

5

2000 chevy Impala

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Just wanted to state that a cabin filter is optional on a lot of cars. However if it was a option on your car, and your car did not come with one chances are there are provisions for one, and may only be a matter of installing one.