Thermostat stuck open or heater core clogged.
I had a similar problem in feb.2005 with my 1998 S-10 Blazer and it was due to the Dex-cool had turned to sludge , and that caused lots of problems.
The first thing to do is after the engine is warmed up, feel the heater hoses going into the heater . if they are hot then the problem is in the heater, probably just adjustment or fuse. If they are just warm to cool then the answer is in the engine, probably needs a thermostat.
answer can also be the temperature control switch in dasboard of car
I have a 1999 blazer. The heater core clogs up about once a year from the Dexcool. Try having it (heater core) flushed and use Prestone (Extended life) instead of Texaco.
how do i replace a heater core in a 2001 Chevrolet blazer
how to replace a heater core in a 1997 Chevy blazer
2000 Nubira, same problem, no water flow from block to heater, core not blocked, runs fine????????????
were is the heater relay on1996 jimmy?
I am having the same problem.. I have already had to replace the intake manifold gasket cause it was leaking, still no heat. We will be flushing out the heater core to see if that's the problem. I may have to replace the heater core, we will see.
The heater door control on a Blazer can be replaced by purchasing a new one. The heater vent will pop out with a little nudge from a flat tipped screw driver. Then insert the new heater vent door control.
The heater core is inside the heater unit on the passenger side under the dashboard
when you put drive chevy blazer 2002 ls 4wd it turns off, what's the problem
You have to completely remove the dash to get access to the heater core.
you must have low coolant or a bad heater core
Problem is that the heater core is the highest point in the cooling system. being a closed system any air that enters is trapped in the heater core. Result, no heat. Recommended repair is to back flush heater core, refill cooling system making sure all air is released from the heater core. Replacement of the radiator cap at the time of repair is recommended.
You would diagnose the situation to determine the source of the problem you're having. At that point you can decide what steps are needed to repair the problem.
Heater Airbound? Heater control cable not working? Heater core plugged?
Drain the water from your 1994 Chevrolet Blazer cooling system. Remove the heater core water supply hoses. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
You have to remove the entire dash board to gain access to the heater core.
the heater core, heater core hoses or heater control valve is leaking
checkALL of your fuses short could be a problem. i have a 95 blazer, bumps may of screwed up wiring like in mine
Same as a 96 blazer go here.How_do_you_replace_the_blower_motor_on_a_1996_Chevy_blazer
The heater core has no gasket. If it is leaking, it must be replaced.
Are you in Alaska? What heater can you plug in that is not already connnected. A diesel preheater maybe.
the heater core was stopped up just flushed it out ok now
There are signs that there is a problem with a hot water heater. When you cannot get your water to heat. It could be signs that the pipes leading to the heater are leaking. It could be a problem with the thermostat in the heater.
Low coolant in the system. Defective heater control valve. Clogged heater core.
It may have a bad heater core.