2nd Gen Non-Engine/Transmission ? Grease fittings on brake housing?

[danmcguire]

While under the engine greasing all the fittings on my 97 2500 truck, I noticed for the first time, zerk style greasing fittings on top of the brake housing, right up above where the brake fluid line comes in to the housing. I have never noticed them before and they look brand new. I had a complete brake job earlier in the summer and am wondering if they installed them. Am I supposed to grease these? I can't imagine why you would. Any thoughts. Thanks

 

[Moose Truck]

These are the fittings for bleeding the brakes. DO NOT GREASE THESE FITTINGS!!!!!

Moose

 

[LEggers]

They are muffler bearings leave them allone they are self lubricating and air cooled.

 

[y-knot]

I wish you would grease them myself. Good thing you don't work at jiffy lube!!!

 

[Forrest Nearing]

my dad tried to grease the front calipers on his suburban once