What is this plugged hose on the 5.3?

[jono20]

To satisfy my own curiosity, can anyone tell me the function of this plugged vacuum line on the 5.3?

[Justin101714]

To satisfy my own curiosity, can anyone tell me the function of this plugged vacuum line on the 5.3?

Is yours 4WD? Possibly the front differential vent hose

 

 

Sent from my iPhone using Tapatalk

[jono20]

Is yours 4WD? Possibly the front differential vent hose

Sent from my iPhone using Tapatalk

Yes it is. I'll have to trace it down to see if that's the case!

[newdude]

Front diff vent hose.

[jono20]

Front diff vent hose.

Is there any reason why I shouldn't re-route it up the side of the fender instead of having it sitting out in the middle of the engine bay tied to the harness? Does the end just need to sit up above the diff somewhere?

[Sierra706]

Is there any reason why I shouldn't re-route it up the side of the fender instead of having it sitting out in the middle of the engine bay tied to the harness? Does the end just need to sit up above the diff somewhere?

Less chance of water entering

 

 

Sent from my iPhone using Tapatalk