Yeah i'll remember to do that, where's it at?

 

When mine was like that Richard, I put a little goop over it and it lasted for years. Finally I had to cut it and put a rubber vac line over the ends. Guess what I sealed the ends with?? LOL

 

^^^ Is that in reference to the check valve? Wow, that's, er, thrifty! New one is about $5 at the FLAPS.

 

I was referring to this picture.

 

Gotcha. Ours cracked when I bumped it one cold day (they get brittle when cold). At the cabin, middle of nowhere. We yanked the pickup tube out of one of those pump-bottles of hand cleaner and fixed it with that and some duct tape, and kinda forgot about it until... well... now....

 

That was a good quick fix!

 

So where is the check valve located? And what all does the brake booster pump run? Thanks for the help

 

Brake booster pump? Do you mean the hydro-boost? It runs off the power steering pump. You have to build the system as your truck did not offer that as an option. A few guys on here have done that. And there are threads on here that go through how to do that.

If you're talking about the vacuum pump, it runs the brake vacuum booster and the climate controls in the cab. That's it.

 

Yeah sorry the vacuum pump, so all my heater controls work except my vent control, what would that indicate?

 

The check valve is on the booster. Right where the vac line goes into the booster, you'll see it. Looks like this: , but may be white.

 

You likely have a leak in the vacuum line going to the vent door, or the operating mechanism is broke. Someone else I hope will chime in on this. I haven't dug into that part of these trucks.