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Vaccum line routing from transfer case switch?

Discussion in 'Chevy S10 Forum (GMC Sonoma)' started by mike 96 ws6, Jan 30, 2012.

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  1. mike 96 ws6

    mike 96 ws6 New Member

    I'm trying to sort out some burnt / mis-routed vaccum lines on my 03 ZR2. Why does the tranfer case vaccum switch have a 3 line connector. I would think that 1 goes to energize the front axle actuator under the battery - and 1 goes to vaccum source (T off EGR valve on my truck). Where does the 3rd line go?

    Also, does someone have a link to a good vaccum diagram for this circuit. I have a Haynes manual and Alldata subscription but neither is much help.


    Thanks,
    Mike

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