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my 1998 gmc jimmy has no floor heat but i have defrost and ven heat
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∙ 13y ago
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Why doesn't heat blow out floor only?
the heat blows out the defrost when it should blow out floor vents only
Why heat blows out vents only not defrost or floor?
Most likely a bad or disconnected vacuum hose to the defrost/floor selector in the heater ducting.
Heat flow will not change from main vent to floor or defrost 2000 Chevy s10?
Check under hood for a broken or disconnected vacuum supply line.
2000 gmc jimmy has heat but you can not control what vent it comes out?
shut all vents off so it comes out on floor
2000 gmc jimmy no floor heat but has defrost and vent heat.?
from what i am hearing a lot of is that it is either the accuator on the driver side to the right of the gas pedal or the baffle door itself is broken(costing a sh*t ton of money to fix have to remove the dash). there is a while plastic piece that has a tendency to break on the end of the accuator that goes into the box. some ppl use a bent coat hanger to push the baffle through the driver side floor vent to get it to move so you get floor heat, then disconnect the red and blue vaccume hoses off the accuator to prevent the baffle from moving. use a nail or tape to stop the vaccume leak . you should still have all you functions for the rest of your heat controls. just the floor and defroster wont switch back and forth. they will both work at the same time. this is the case for each the blazer, jimmy, sonoma, s10, zr2 1998 and up. if you still have your heat working on the floor id suggest that if you own one of these vehicals that you don't turn your defrosters onto full fefrost mode. just floor defrost. what happens is the accuator by the gas pedal when placed in full defrost mode places to much force on the white plastic piece and snaps it, or the piece that's just inside the box. if you put into floor / defrost mode the accuator works as intended.. its mostly a design flaw from gmc that was never made public. it was a volintary recall item
The heat air and defrost do not work What is wrong?
The year, make and model info would help. Also need to know if the blower motor is working, just not getting any heat, or not changing function between defrost, dash or floor vents.
Why does the heat vent in a 1991 Sunbird only give heat through the defrost and the dash and not the floor?
The vaccum door near the gas pedal is broken or not receiving vaccum.
What is the left and right levers on the transmission hump in a 1971 vw super beetle?
One is the Heat on/off and the other is the Defrost/Floor lever.
Why would you get heat out of your defrosters but not your front vents or the floor on a 98 wrangler. fuses are good and I replaced the control pannel?
Your blend door is giving you trouble, it is not switching from defrost to heat or vent
2001 dodge diesel 4x4 no heat from defrost or floor. But when you turn the air conditioner theres heat?
Common heater damper door indexing problem. Our 2000 back up shop truck hot is cold and cold is hot on the controls. Expensive to fix and usually requires a trip to the dealer
I have a 2002 Ford Explorer that is get low air flow from the defrost vent when the defrost unit is selected. Most of the air flow is going to the floor vents. Is the blend valve bad?
Hi, It is not the blend door, that is for heat/cold changes. The mode door could be the problem, or stuck defrost door.
When i turn on the defrost no air seems to go the windshield?
no heat to front window went defrost is on
