loud noise right dash

[woody31]

hi yall, need a hand,,88 model,,when u turn the key on,,there is a horrible noise from the upper right area of the dash,,key off the noise is there again, almost like a stripped gear.
it is some kind of gear or motor noise??? anyways it is very loud and very annoying,,anyone has a idea or been there done that,,please let me know.,.thanks

 

[MYT HI]

Could be the heater blower motor, worth taking a look at for sure


Sent from my 350 TBI powered iPhone

 

[someotherguy]

Is it a popping or sort of knocking noise that lasts about 30 seconds when you start the truck, and then does it again when you shut it off?

Bad fresh air/recirculate actuator motor, it's the one on the far right near the blower motor. Kind of a PITA to reach in there and replace, and the part is about $60-$75 depending on where you get it. I'd buy AC Delco only, but get it off Amazon, ebay, whatever. Don't get a used one from the boneyard as these go bad quite often.

I did a write-up on replacing this without pulling the dash (like the manual tells you to - totally unnecessary) but it's still kind of a pain. http://www.chevytalk.org/fusionbb/showtopic.php?tid/170970

If you want to just kill the noise for now, you can disconnect the wire from it. It's not working anyway.

Richard

 

[great white]

Recirc door motor.

It goes past it's travel limits and the worm gear inside graunches away until it stops turning.

Replacement is the only cure.

Fairly common issue.

 

[woody31]

thanks,,good write up,,dont look fun tho,,

 

[bdubyah]

Was just about to post about the same type of issue.

This sounds like my problem as well.

 

[someotherguy]

Easiest way to tell is reach up in there and pull the wire. No more noise, you've found the bad part.

Richard

 

[bdubyah]

I just hit the MAX button when I got in a second ago and it made it stop for a second.

Definitely the problem. Probably just unplug it since I don't have AC anymore anyways.

 

[great white]

Make sure it in the "outside" position if you unplug it or you'll have all sort of windshield fogging problems on cold or rainy days.

 

[woody31]

how do you tell if it is in the outside position??
thanks for the reply gw ,, hope your feeling better!!!!!!!!!!!!!!!!