sprindl

I have a 2000 S10 Blazer and yesterday while on a long trip I noticed that when I select say the defrost setting that the fan seems to be operating but the ducts don't open to allow the air onto the front window. I tried the other settings and got similar results. Any ideas?

Rick Norwood

What happens when you try the air condioner? Have you had any work done to this truck recently?

BlazerLT

Check your vacuum lines going to the vacuum ball in the engine bay.

__________________
1995 Factory Blazer Service Manual for sale, PM if interested.

sprindl

Recently we had a cooling system flush and burp. Can you direct me under the hood concerning the location of the "vacume ball".

-sp

sprindl

Cool air, no fan. -sp

sprindl

This seems to happen after prolonged drive times. It's almost like the airflow baffle returns to a closed position.

TonyMazz

There is no "ball" in the engine bay....chances are it's in the driver side fender up by the ABS system piping...small trap door right by the hinge...

Thats' where it is in my 99...you will see a hose going to it.

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1999 Blazer LS 4WD 4.3L "W"
2004 Silverado 2500HD Duramax

sprindl

I'll have a look this morning. Thank You -sp

BlazerLT

Yes there is. They might not all be in the same location, but it is there.

__________________
1995 Factory Blazer Service Manual for sale, PM if interested.

TonyMazz

Oh I'm sorry I wasn't clear...there is no vacumm device shaped like a "ball", there IS a vacumm device that is somewhat retangular that is located in the driver side fender in a somewhat obscure location. It performs the same function, but felt if this gentlemen was searching for a ball he'd look for an extended period of time. He shall find the vacumm device as i instructed...

Thanks

__________________
1999 Blazer LS 4WD 4.3L "W"
2004 Silverado 2500HD Duramax

BlazerLT

What year did they change from the ball?

__________________
1995 Factory Blazer Service Manual for sale, PM if interested.