Heater core?

Electrical problem
1996 Chevy Blazer 6 cyl Four Wheel Drive Automatic 200k miles

my blazer had the heater core replaced sinse then none of my 4 wheel switches have power the fuses in the panel are good and the switch works on a test blazer what could this be

THe dash was removed to replace the heater core. Return to the shop and have them recheck their work. Chances are they left things disconnected.

I changed my radiator,water pump and thermostat and my truck still runs hot.
could it be my heater core (I don't have heat in the winter) I was told by Fi_esto_e that the heads was bad.

is the coolant leaking? any smoke from exhaust? it could be radiator fan(s) not working, air in system, clog in system, cracked head gasket etc... if there is no leak of coolant (either visible wet spots or smoke) than it's probably a clog in the system, air in system or radiator fan(s) not coming on.

Now there is no smoke and no back splat from the oil and the oil is not milky

1996 Chevy Blazer mileage: 64,754. I have a 1996 Chevy Blazer 4x4 with a V6-262 4.3L engine. About three weeks ago, the heater stopped blowing heated air. Having a father that teaches automotive technology we decided it must be the thermostat. We replaced thermostat with no success. Blower works fine. Coolant level is good. Connecting the scan tool the vehicle temperature only got to 195 after extended running time. Unable to find any info on normal operating temp. For a Blazer we are at a loss. Using the fix of old, we placed cardboard over the radiator and that seems to make it work better not great. With the problem possibly being the heater core or actuator with a dealership repair cost of $500.00 I am no doubt frustrated. Do you know of anything else that we might try or any problems that you have heard about Blazers cooling system? There are no recalls to date on all data. Any suggestions would be appreciated.

Two things to check: First check for vacuum that goes to the heater control, you may have a loose or cracked line which would cause the heater doors not to work properly; Secondly, check for a partially plugged heater core that would restrict the coolant flow.

Have heat but smells even with heat off and very bad when heat is on. I was told heater core.

Good afternoon.

Smells of what? Is it a sweet smell?

A leaking heater core will put a mist on the inside of the windshield.

Did you have the system pressure tested?

Do you have coolant leaking on the passenger floor?

Roy

https://www.2carpros.com/articles/replace-heater-core

Yes, it is a sweet smell and at times this does get a fog on windshield. I have noticed dampness on passenger side floor not to bad yet. I had it fleshed to the core once because was not heating well, but after that did have and do have good heat, but the smell is overwhelming from heater, sweet.

how do i change the heater core in my 96 blazer?

Heater problem
1996 Chevy Blazer 4 cyl Two Wheel Drive Automatic

how do you change a heater core in a 96 chevy blazer

ok i bought a 1995 blazer and the guy said that the heater core busted. so me and my step dad replaced the heater core and put the dash back in. well now my running lights wont work but when i turn my regular lights on it dings as if the doors are open. so i went to autozone and got the thing for the door so it doesent ding anymore . but now when i start it and i try to do anything like turn on my radio
( aftermarket radio) the blazer dies. i cant do anything or the blazer will die. does anyone know what would be the problem? mabey i connected wrong cables or something? please help me!!!!

I'm sorry, but it sounds like you have some serious issues here. I'm not sure why the radio would shut down the engine. Does anything electric shut it down? Also, what was replaced to stop the dinging?

Joe

yes anything electrical will shut it down even if i step on my breaks and my break lights will come on. my step dad said that it might be because my battery was dead and we had to jump it so it may be drawing and doesent have anything to draw it from and cause it to shut down

Hi:
Yes, I didn't know that the battery was dead. If it's completely dead, the alt won't recharge it and any draw away from the ignition will kill the engine. When you jump it, will it stay running with the other battery still attached? If so, either recharge your battery or replace it.

Let me know what you find.

95 s-10 blazer 179,00 miles smell of anti freeze and temp pegs hot with no heat coming into the vehichle then a couple miles down the road the temp goes back to normal and i have heat.What could possibly be the problem?

Feel the heater hoses- If the inlet hose feels Hot and the outlet warm, check the thermostat.

If both are warm-remove heater hoses and back flush the heater core.

What is the location of all the bolts for dash removal.

You will find two under the dash, one on each end. Then there are two hidden under the speaker grills on the dash and two more under the center vent grill. There are also two toward the middle of the dash behind the radio plus the ones that secure the dash to the steering column bracket and depending on options the center console has one above it going to a brace. I think that's all. I've slept since I pulled a dash on a 95. :-)

How many hours labor from an mechanic to replace heater core

My spec for factory says 2.2 hrs. Sometimes that factory spec isn't realistic. My labor specs says factory--regular--severe, the severe is close to 4 hrs.

1994 Chevy Blazer

need to change heater core where is it

It is located under the dash and requires many things to be removed. I recommend that you purchase a repair manual that provides step by step instructions and pictures to identify parts.

Let me know if you have other questions.

Joe

Heater problem
1993 Chevy Blazer Four Wheel Drive Automatic

how do you change the heating core of a chevy blazer. my uncle is trying to change one and he can't figure out how to get the old one out and the new one in.

go to autozone.com and check their repair guides - it's free

we have to re and re the heater core.. is it do-able in a day's time? Also, I have heard that a small section of the air duct can be cut and taped over so u can cut the re and re time down.. (it's cold outside..grinzzz!) thanks.

Hi:
You could do it in a day. However, I don't recommend cutting things. You'll end up with other problems. I do recommend that you purchase a repair manual because it is involved process.

Joe

does the dash board have to be removed to change the heater core

No remove glove box, duct work , cable three nuts that protrude through firewall.

Heater problem
1983 Chevy Blazer 6 cyl All Wheel Drive Manual

how do i change the heater core on my 83 blazer i have antifreeze coming into the car an its all wet on the passnger side of the floor an when i turn on the heater you can smell antifreeze

HI there, See text for procedure , there are no pics to support this operation sorry. Mark (mhpautos)