Hi, and thanks to this forum I've been able to solve a number of problems with my 1998 Blazer. Latest problem is that there is no floor heat, All other positions work fine. Any suggestions would certainly be appreciated. Thanks, Peter

sounds like the door that changes position of the air flow is jamed lay down on passenger floor have helper move heater to different positions and listen for door to move, you should be able to hear it. sound of flap door moving should be ther if not its jammed somehow.