Before I pulled the motor I went to disconect it but snapped it right off instead. First, what is it? Second, part number.?
I spent a half hour looking through the manual and can't find it. Pic is a little blurry but as you can see it's on the back of the block. Thanx
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That's your oil pressure sensor. It's VERY common to break as it's very fragile. It's GM part number 10201491.

 

Much appreciated.

 

yep, and I broke mine too this spring doing my heads. Then I broke the replacement I bought while installing it, be careful when you put a wrench on the new one.

 

Its funny that you mention that. I broke my new one during the install. How tight is tight?

 

Torque spec is 106 in-lb. There is an oil pressure sensor socket you can get at Autozone, Advance, etc.

http://www.autozone.com/autozone/acc...er=141490_0_0_

 

Mine cracked and seeped oil for about 2 years before I found it... I only found it cuz I pulled the motor to freshen things up...