No heat from the Bravada

[Pingr]

My 98 Bravada will not heat. Has plenty of coolant; Engine temp is about 190; one heater hose is hot and the other is not; I've had the intake gasket replaced and still no heat. Doesn't seem to be any coolant in the oil. Is there any way I can check the climate control to see if it is even allowing heat into the heater? Any help appreciated

[eltigre]

Originally Posted by Pingr

My 98 Bravada will not heat. Has plenty of coolant; Engine temp is about 190; one heater hose is hot and the other is not; I've had the intake gasket replaced and still no heat. Doesn't seem to be any coolant in the oil. Is there any way I can check the climate control to see if it is even allowing heat into the heater? Any help appreciated

I'm not familiar with the bravada but if logic is true then if you have one hose hot and the other cold then you must have something blocking the passage thru the heater core....I take it that the hoses hook up DIRECTLY to the heater core itself because if not then the hot hose might hook into some kind of valve that needs either an electrical signal and/or vacuum to open it..........check your fuses and relays; any vacuum hoses going in and around that hot hose

[IH8SPM]

You need to have your coolant system flushed and refilled with non GM orange coolant. Check with a large repair center on a service bulletin or petetion for re emburstment of the funds. GM knows of the problem but wants to pass the cost on to the consumer since it is a replaceable fluid and is part of scheduled maintnace. They just cant admit that the fluid they use is like METAMUCIL when it does not have enough water. It clogs everything in its path like cholestoral in a artery.