# Air flow performance **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** chevrolet, 1500\ **Created:** [June 7, 2020, 5:13pm UTC](https://community.cartalk.com/t/air-flow-performance/165450 "2020-06-07T17:13:43Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![redneckred](https://avatars.discourse-cdn.com/v4/letter/r/50afbb/32.png) [@redneckred](https://community.cartalk.com/u/redneckred)\ **Post date:** [June 7, 2020, 5:13pm UTC](https://community.cartalk.com/t/air-flow-performance/165450/1 "2020-06-07T17:13:43Z")
So if I understand correctly, my 2008 Silverado doesn’t have a cabin air filter. My A/C blows really cold and the blower motor works well. However, while sitting idling for work, which I do a lot, I have to crank the fan up To the 2nd from the last notch to wide open to get a good air flow out of the drivers side vents. Any suggestions? ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [June 7, 2020, 5:18pm UTC](https://community.cartalk.com/t/air-flow-performance/165450/2 "2020-06-07T17:18:32Z")
Keep doing what you’re doing! Tester ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [June 7, 2020, 5:29pm UTC](https://community.cartalk.com/t/air-flow-performance/165450/3 "2020-06-07T17:29:24Z")
> [@redneckred](#): > > Any suggestions? Yes, consider that maybe one of your blend door actuators is broken or partially stuck. If you ever hear a soft click-click-click sound when you try to change where the air comes out, there’s your sign that an actuator has failed. Common problem on these vehicles. ---
**Author:** ![redneckred](https://avatars.discourse-cdn.com/v4/letter/r/50afbb/32.png) [@redneckred](https://community.cartalk.com/u/redneckred)\ **Post date:** [June 7, 2020, 5:32pm UTC](https://community.cartalk.com/t/air-flow-performance/165450/4 "2020-06-07T17:32:01Z")
Don’t hear the clicking sound you speak of, but I am hearing something as if a part is stretching or straining behind the vent in the dash by the radio drivers side when I change the air flow selection ---
**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\ **Post date:** [June 7, 2020, 5:32pm UTC](https://community.cartalk.com/t/air-flow-performance/165450/5 "2020-06-07T17:32:19Z")
> [@redneckred](#): > > if I understand correctly, my 2008 Silverado doesn’t have a cabin air filter. You _might_ be correct, but Autozone’s website lists several manufacturers’ cabin air filters for that particular model: > **[2008 Chevrolet Silverado 1500 Cabin Air Filter](https://www.autozone.com/filters-and-pcv/cabin-air-filter/chevrolet/silverado-1500/2008)** > > Equip cars, trucks & SUVs with 2008 Chevrolet Silverado 1500 Cabin Air Filter from AutoZone. Get Yours Today! We have the best products at the right price. I suggest that you look for a YouTube video that explains how to change a Silverado 1500’s cabin air filter, and use that as your guide for finding out whether–or not–there is a cabin air filter in your truck’s HVAC system. ---
**Author:** ![redneckred](https://avatars.discourse-cdn.com/v4/letter/r/50afbb/32.png) [@redneckred](https://community.cartalk.com/u/redneckred)\ **Post date:** [June 7, 2020, 5:41pm UTC](https://community.cartalk.com/t/air-flow-performance/165450/6 "2020-06-07T17:41:38Z")
I tried but couldn’t find a video for the year model or close. Preclude does show filters too but everywhere I look online says they don’t have them. [https://www.vehiclehistory.com/questions/does-the-2008-chevy-silverado-have-a-cabin-air-filter-3018](https://www.vehiclehistory.com/questions/does-the-2008-chevy-silverado-have-a-cabin-air-filter-3018) However, after flipping the airflow location selector and then back to vent with recirculated air, I have a huge difference in the amount of air coming out of the vents now. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [June 7, 2020, 5:58pm UTC](https://community.cartalk.com/t/air-flow-performance/165450/7 "2020-06-07T17:58:11Z")
Is your engine fan working correctly? The clutch? It could be lack of airflow through the condenser when you’re stopped. ---
**Author:** ![redneckred](https://avatars.discourse-cdn.com/v4/letter/r/50afbb/32.png) [@redneckred](https://community.cartalk.com/u/redneckred)\ **Post date:** [June 7, 2020, 6:08pm UTC](https://community.cartalk.com/t/air-flow-performance/165450/8 "2020-06-07T18:08:58Z")
Fan is working. Got plenty of cold air coming in now that I flipped the air flow selector switch a few time and heard the stretching/straining sound as if the door was opening and closing. Actuator may be going out or just didn’t close properly because I went from wide open to taking it down some notches because it’s getting cold in here now. Vent thermometer showing almost 40 now. ---
**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\ **Post date:** [June 7, 2020, 7:40pm UTC](https://community.cartalk.com/t/air-flow-performance/165450/9 "2020-06-07T19:40:16Z")
On one car ac was just fine on fan speeds one and 2 on the highway, but stopped, it was not cooling and had to do the same. Tuned out the blower resistor was bad and on speeds one and 2 not actually blowing at all! ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [June 7, 2020, 7:48pm UTC](https://community.cartalk.com/t/air-flow-performance/165450/10 "2020-06-07T19:48:06Z")
> [@redneckred](#): > > am hearing something as if a part is stretching or strainin That would be it… more likely something preventing the air doors from moving easily. ---
**Author:** ![keith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/keith/32/5518_2.png) [@keith](https://community.cartalk.com/u/keith)\ **Post date:** [June 8, 2020, 12:43am UTC](https://community.cartalk.com/t/air-flow-performance/165450/11 "2020-06-08T00:43:16Z")
My 2007 Silverado does the same thing.