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Discussion Starter #1
I've read about the black and white front diff vent and/or breather, but I'm not sure what it is.

Is this the several-inch-diameter round plastic insert in the side of the diff case with a hose connected to the middle of it, that the service manual calls the "Front Differential Carrier Vent Hose Connector"?

If this is it, I got a white one from the factory. If this isn't it, where the heck is it?

For a bonus question: This hose coming from the Front Differential Carrier Vent Hose Connector seems to disappear into a wire bundle and never come out. Does it just dead-end in there?
 

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You've found it , I also wondered where the vent hose went !!
 

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If you trace the vent hose it ends up near the top (inside) of the wheel liner. There is also a vented cap on the end of the hose.
Edited by: jbplock
 

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hot2500hd said:
now on that the white one you can run synthetic right the black one doesnt do good with synthetic. am I correct on that?

Yes, White is for synthetic, black is not...


See the Feb 03 GM Tech Link article for more info...


 
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