Thanks Craby. I bled it using the two bleeders I saw. Didn't see the third one. So Craby, my restrictor came apart in my hand, after cutting off the fittings meaning the collar separated from the longer section. Inside is a small square piece with a spring. I assume that's the restrictor? Since the restrictor only comes in the new hose, I was thinking that in order to repair the restrictor, knowing its made from ABS plastic, I was going to use ABS glue to re glue the two pieces back together then replace the restrictor. Otherwise, your saying my coolant will flow to fast? I only had minimal heat before the leak anyways. I don't drive the car in cold weather so does it matter if I do not or cannot repair and replace the restrictor?

 

should be ok without it. heater/defrost will take a while to warm up. give it a try and see how it goes.

 

The purpose of the restrictor is to reduce coolant pressure to the heater core, so that it doesn't split apart over time. This is more important at higher rpm's when pressure is highest. You want to put one back in, unless you know something more that the engineers didn't. It's not just GM that uses restrictors, and the concept has been around for many many years (even cars of my vintage).
Don't use glue on your broken piece, it will break apart again. Go to Home Dopey, and get a piece of PVC pipe, that has the outer dimension of the inner dimension of your hose. The thickness of the PVC wall will help to act as a restriction. I'd double clamp it to be safe, since the pipe won't have a raised flange on the end.

 

i thought the pressure was the same thoughout on a closed system. ill have to think a while on that one. lol

 

heater control valve, autozone part numbers 5960 and 74796. 10 bucks.
OEM: 5960 | Heater Control Valve | AutoZone.com

 

If there is no flow, eventually all pressures in a closed system will equalize. When you add flow to the equation, you will always have a difference of pressures between any two points in the system. Without a flow restriction, the pressure differential will be minimal, and you may not be able to measure it even with calibrated lab equipment.

The restriction can be as simple as a smaller orifice that the fluid must pass through, or a sharp change in direction that the fluid must negotiate.

 

I'll try the home dopey method lol Ty guys