My 98 Blazer had the radiator flushed and refilled about a year and a half ago. The water pump was also replaced.

I had my oil changed yesterday and noticed the radiator was only half full. My coolant reservor was empty as well. I filled the radiator up, and I filled the reserve up then I put on a new radiator cap. I then ran the heat on my blazer for about 10 mins. There was no leaks and the resivor only went down about a half inch.

I checked this morning and the resivor went down an inch. Then I tried running the heat agin and now I am not getting any hot air.

This truck is on my last nerve. Any help would be appreciated.

 

sounds like a head gasket or intake gasket. im sorry