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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: alec22 on December 22, 2006, 10:23:00 pm

Title: vacuum source for heater/defroster controls
Post by: alec22 on December 22, 2006, 10:23:00 pm

It seems that the previous owner cut the line as it exits the cab of the truck.  I need to know where the vacuum line is connected so that I get my defroster/heater and what-not working.

Title: Vacuum controls
Post by: VileZambonie on December 22, 2006, 09:54:00 pm

The heater controls should go to the round vacuum reserve canister and the canister should receive manifold vaccum

Title: Re: Vacuum controls
Post by: joesgarage71 on December 23, 2006, 08:13:00 am

The vacuum line comes out of the firewall on the passenger side of the engine.
Steve

Title: Re: Vacuum controls
Post by: Fast68 on March 15, 2007, 04:26:00 am

intake manifold to blackpalstic container and then to the vacuum line runnign inside the cab at the heater box wiring