Question about 2004 Chevrolet Blazer

1 Answer

I have no heat

The blower works and there is very little heat coming out (very little) in the summer when i put on the a/c ti will run hot

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 260 Answers

Sounds like you may be low on antifreeze. ck and top off as nec. then run vehicle again if was low. if engine is running at normal temp (around 195-200 degrees) and not fluctuating, then a possible restricted heater core is suspect. you can flush these cores out fairly easily at firewall under hood. (do this before replacing core, pressure washer works well). if engine temp is not normal(reads low) or fluctuates, replace thermostat.

Posted on Dec 05, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

2002 saturn L200


have your cat checked could be plugging up

Jul 10, 2014 | 2002 Saturn L-Series

1 Answer

My front heater is throwing very little heat the back is throwing more heat could hear the back blower but not the front


If you cant hear the blower on the front side, its probably gone out. If you can hear the blower and theres cold air coming out the vent, its the flap that switches from hot to cold thats not working

Jan 08, 2014 | 2005 GMC Envoy Xl

1 Answer

My car has no heat


The first thing to check is the level of coolant-is it full? Because no heat is the first indication of low coolant. When car is cool, open radiator cap and fill with a 50-50 mix of antifreeze and water. Also fill the overflow tank halfway up with the coolant mix.
Also feel both heater hoses after the car has come to normal operating temperature. Both should be hot. If they are, the heater is working as intended. If only one is hot, the coolant is not circulating through the heater, and someone will have to get that working-possibly an air block in the heater core, possibly a plugged heater core.
Finally, the blower motor may have wore out. Without the blower, very little heat will come out. Test or replace the blower motor.

Dec 11, 2013 | 2001 Pontiac Grand Am SE

1 Answer

My heat blower wont blow


Check blower motor relay or fuse. If not you may need a new unit.

Dec 25, 2012 | 2005 Dodge Durango

1 Answer

The blower does not blow air when the truck is really cold. No ac nor heat. I've replaced the blower motor resister and the fuse under the hood. It worked fine right after I did this but it got colder...


It sounds like you have climate control.If you do, then you will have to check/change the climate control computer before continuing.
May I also ask with make and model of vehicle you have in case I know of any common faults.
Try cleaning the interior air temperature sensor or checking this for a fault too.

Nov 14, 2012 | Cars & Trucks

1 Answer

2002 nissan altima heater problem


have 2002 altima,blower works no heat at idle and very little heat when accelerating.I changed carbon cabin filter,made sure little gear under dash to temp knob wasnt broken,flushed and bled system.Nothing worked so checked hoses to heater core and found inlet hose was hot,outlet hose was not.So investigated this problem and came to conclusion heater core was clogged.An easy way to check is to get car to normal running temp. put on heater and blowers at full.Go under dash on passenger side where counsel meets firewall,this is where heater core core inlet and outlet aluminum tubbing go through firewall,you will be able to feel both tubes one closest to you is outlet, so if this one is not hot and and other is your heater core is clogged.I detached both inlet and outlet hoses to heater core from water control valve.Then I blasted water with waterhose and nozzle set at jet,first through outlet hose to blow gunk out,then through inlet hose until water runs clear.Reatach hoses fill and bled system.heater works great nice and hot!

Nov 10, 2012 | 2002 Nissan Altima

1 Answer

83 ford ranger no heat ,new heater core,thermostat,blower motor,runs at normal temps,noticed one heater hose very hot yet the other one which is ran into a metal line going to the engine or ekg valve is...


it sounds like you have a air blockage, or the cooling system needs flushed. to flush system go to ( autorepair.about.com/od/regularmaintenance/ss/coolant_f...) click on 3rd one down. remember to bleed air out of system, this works the best. turn heater and blower on high, start adding coolant. start car let it idle till radiator thermostat opens. when top radiator hose gets hot you should have heat. some vehicles have a bleeder to let air from system. when filling putting coolant in system. if it does, then open bleeder while engine running and putting in coolant untill there are no air bubbles coming out. have a good day !! when doing flush if need be. you can go to any auto parts store and buy radiator flush. follow directions on the back ( prestone is best )

Dec 11, 2010 | 1983 Ford Ranger

2 Answers

The blower works and a/c works but no heat comes out


If the blower is blowing air just fine, but you cannot control the temperature, you need to listen to air coming from the vents while turning the temperature from hot to cold. If you do n ot hear any change in airflow, then you may a temperature door in the dash broken. this is becoming a common problem on the Equinox

Tech JK
-------

Oct 11, 2009 | 2006 Chevrolet Equinox

1 Answer

Driving down the road and heater guit blowing out heat


Pretty sure I have answered this about a million times. Blower motor is on engine side of firewall on passenger side. You can run a hot lead to it to check if it's working! You did check fuse... Right?

Jan 12, 2009 | 1993 Jeep Grand Cherokee

Not finding what you are looking for?
2004 Chevrolet Blazer Logo

191 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

61168 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...