So have a rear diff leak on my 2001 Camaro SS. Seems to be coming from top right side, specifically seems to be coming from that hole. Not very familiar with GM 10 bolt. Is that the vent hole? Shouldn’t there be some type of vent in there? Lol

You can see the trail of fluid running down.

 

Yes, the plastic slip-in vent is missing.

 

Figured.

Would you by any chance have a part number or link? When I type in search, I get 840 different vent valves!

will any of the ones for a GM 10 bolt work? And do you just press it into the hole? Or are there threads down in there and it screws in?

Thanks!

 

For the OP and anyone else looking for this part


The part is discontinued, but this picture at least shows you what looked like.