Originally Posted by BillBoost37
On the other side of the check valve that line turns back to plastic and heads down to the frame rail. From the frame rail it goes up under the passenger front fender where it feeds the vacuum canister. After the canister the line follows back along the frame and into the cabin as the purple supply line.
Is there supposed to be another vac line connected to the cannister? I just pulled it out, and there is only the feed line that comes from under the fuse cover. I verified the cannister is fed from that line. There is not another hose nipple on the cannister and no other hoses in the vacinity, so there must be another source feeding the HVAC programmer?