Vacuum line Question (SEE PIC)!!!

[chrs93]

Any idea what that second line it terminates to is?

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[4.3LXJ]

What, that black one with the check valve in it?

[chrs93]

Yes that one. It's black going into the check valve and blue coming out going into vac line bundle

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[4.3LXJ]

Not really. You will have to check this out by following it. I believe your front axle has a disconnect on it. Normally, one red line with a disconnect goes to the transfer case selector switch, which has two lines come out that go to the disconnect, which has one return line that comes to a vacuum switch on the same harness located just under the heater motor. That bundle of lines going into the cabin are a mystery to me. As I said, someone has worked on this

[chrs93]

I'm not 100% the bundle goes into the cab. They all wrapped I need to follow and verify. More to follow. Thanks again for the help

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