Question about 2006 Chevrolet Tahoe

1 Answer

How do you back flush heater core? should I check heater valve first? If so, how?

Posted by on

  • jhill86 Jan 31, 2010

    tried back flusing and there was no restriction



    any other suggestions? Heater is blowing cold air and temp is 210

  • jhill86 Jan 31, 2010

    Thanks so much! This worked and solved the problem in a couple of minutes!

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 2,926 Answers

You'll have to remove both heater hoses's running into the firewall. Place a container under the hoses Place a garden hose on one of the hoses and with only a little water pressure, let the water run thru the heater core and out of the other hose until clear water exits. No need to play with the heater valve to flush the heater core.

Posted on Jan 31, 2010

  • GetMeOttaHere Jan 31, 2010

    Check the heater valve, it may be stuck closed. With no problems to the heater now, and with coolant back in the engine and still no heat, the heater valve is suspect at this point.

×

Ad

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad
Pattods
  • 116 Answers

SOURCE: not getting heat in cab

Is the blower running at all? Also, make sure the main air intake vent is free of obstructions.

Also, a vacuum leak could cause the actuator to not function correctly. I'd check into the vacuum lines if all else fails. I've had too many cars here with heat/air problems due to vacuum loss and the actuators not switching correctly.

Posted on Sep 10, 2008

emissionwiz
  • 76132 Answers

SOURCE: flush heater core

PULL THE HEATER HOSES OFF IN THE ENGINE BAY, THEN USE A GARDEN HOSE AND FLUSH THE CORE IN BOTH DIRECTIONS, IF U SEE NO RUSTY WATER OR THE WATER GOES RIGHT OUT THE OPPOSITE SIDE U ARE FLUSHING U DON'T HAVE A HEATER CORE PROBLEM

Posted on Mar 24, 2009

  • 1 Answer

SOURCE: 92 chev astro van heater won't heat

its your vacum valve behind the heater matrix  in the engine compartment LHS

Posted on Jun 23, 2009

  • 290 Answers

SOURCE: No heat/defrost 01 corolla

Sounds like you have air trapped in the heater core when you flushed the heater core. loosen the upper most heater core hose and run the engine untill coolant seeps out. Wait until the coolant has reached running temperature.

Posted on Jan 18, 2010

  • 1 Answer

SOURCE: flushing the heater core

I removed the hoses and took a air nozzle at low pressure and blew in the return hose connection of the core. A big chunk of paste like substance shot out then pure liquid. I put the hoses back on and tested it. Now its blowing hot!!!!!!!

Posted on Dec 14, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

How do i change 92 chev luminas heater core


It is probably not the heater core do to most times when the heater core goes bad it stars putting water into the interior of the car. It may be the heater core supply valve or the blend door actuator is not working. Try warming the Vehicle, then carefully feel the heater hoses, are they both hot? If one is cooler than the other, You need to flush the core, or do a replacement job on the heater core. Also if the system has a heat control valve on the heater hose, make sure it is working! Also check the thermostat, and the temperature blend door, thats under the dash, in the heater plenum. You can flush this yourself, buy the prestone flush kit and install the tee in the heater return line. Disconnect the heater hose at the waterpump, clamp the hose in back of the tee you installed and back flush till it runs clear.20 mins or so.

Sep 15, 2014 | 1992 Chevrolet Lumina

1 Answer

Heat not working in 2006 mdx acura


The whole system is very simple. There is a valve that opens and closes on one of 2 hoses that come from the engine. If the heater core is not getting water, the valve itself is the problem. If they did the flushing properly they should have checked to see if that valve was fully open to allow the flushing process to clean out the heater core too. If there is sloshing in the heater core (check it by listening under the dashboard when heat is turned on) then there is AIR in the core stopping the antifreeze mix from going through its coils. Remove the heater switch on the heater hose and check it for proper action first. Next have a compressed air test of the heater core to see if it is clogged. If you fix this, try to do regular maintenance on your beautiful MDX!

Jan 12, 2013 | 2006 Acura MDX Touring

2 Answers

HEATER ISN'T BLOWING HOT AIR


Sounds like a restricted heater core. Remove the hoses and back-flush the heater core system with a water hose. You may want to do a complete cooling system flush while you're at it.

If you can't flush the heater core clean with a water hose, it may be time to replace.

Jan 06, 2013 | 2002 Ford Ranger Regular Cab

2 Answers

We live in a cold climate. Our 1998 GMC Jimmy Heater will not provide cabin heat. The engine warms normally. We replaced the thermostat just to make sure the coolant was warm enough. The blower operates...


UNHOOK BOTH HEATER HOSES AND FLUSH OUT HEATER CORE
DO IT FOWARD AND BACK FLUSH / COVER DIST. CAP OR YOU WILL
FILL IT WITH WATER / IF IT CLEARS OUT HOOK HOSES BACK UP AND
BLEED AIR OUT OF SYSTEM / IF IT DOES'T CLEAR OUT HEATER CORE
WILL NEED TO BE REPLACED (DASH COMES OUT TO DO HEATER CORE)

Dec 08, 2010 | 1998 GMC Jimmy

1 Answer

Where is heater control valve on 2003 dodge ram pick up


THERE IS NO HEATER CONTROL VALVE ON THE WATER HOSES. NEW HEATER CORE. INLET LINE right before heater core hot, outlet after core look warm. Burped cooling system 5 times with engine at operating temp. Installed homade burp VALVE right after heater core outlet(high part of hose). Still no heat. Removed water pump, impeller still in good shape not stripped off shaft. Removed heater core hoses flushed water thrue the connections on the block to the water pump INLET and outlet. flushed water thrue heater core and hoses. Going to put it back togeter today. Used known good gauge to check water temp for operating temp in test. 195 f

Oct 22, 2010 | 1997 Dodge Ram 1500 Club Cab

1 Answer

1997grand voyager is blowing cold air new thermostate water pump and the raditor and heater core has been back flushed it started blowing hot air again then went back to blowing cold air again


I would look for a vacum leak on the control valve for the heater. There are 2 lines from the radiator leading back to the firewall. One has a control valve on it that should be vacum controlled. When you back flushed to the heater core you may have forced this valve open temporarily. The control may have low vacum or insufficient vacum to open a stuck valve. The good news is you can actually manually open this valve and tie it in the open position which will at least temporarily solve the problem. Check your vacum lines for leaks and check the valve to make sure it isn't sticking.

Jan 21, 2010 | 1999 Plymouth Grand Voyager

2 Answers

1999 Taurus-NO HEAT-replaced thermostat,flushed heater core,still NO HEAT,ANY SUGGESTIONS?


Sounds like the problem has to be the valve is not opening and thus not allowing the hot coolant to enter the heater coil. Manualy open the valve (engine firewall) and see if heat is present. If this works check your cable from the dash switch as it isn't working the valve properly and needs replacing.

Dec 29, 2009 | 1999 Ford Taurus

3 Answers

I have a 2000 Jeep Cherokee and the heater does not heat


Check to see if the temp door is changing to heat,If that is fine,Then make sure the thermostat is good,maybe just replace it,and refill the radiator,and reservoir with coolant.The heater hoses going into the heater core need to be checked,while the engine is real hot,to make sure the heater hose going in the heater core,and out of the heater core are both to warm to hold by the naked hand.If only one of them is hot,and the other one is warm,to cold to the touch,then remove the heater hoses from the heater core,and use a water hose to flush the heater core out.Put the water hose in one side and flush the heater core out with the force of the water hose pressure.Then do the other heater core pipe the same way.Then replace the heater hoses back on the heater core,and refill the radiator.Make sure to get enough coolant back in the radiator.If there is not enough,the coolant will not flow threw the heater core and put out heat.I hope this is helpful,and you can do the work yourself.You may want to check those heater hose first thing.And change the thermostat anyway,sense you will have some coolant lose from flushing the heater core.If this helps,please let us know,thank you.

Oct 21, 2009 | 2000 Jeep Grand Cherokee

2 Answers

No heat in my dakota. flushed heater core and replaced therm with a reg one.


check for poor flow to heater core-change heater hoses -check for lime build up at intake connector or worn out water pump -if you only put water through core try using CLRlime cleaner in core-get two 6in pieces or heater hose hook them to core and pour it in and leave for 15 mins then wash out with water hose

Oct 04, 2009 | 1987 Dodge Dakota

Not finding what you are looking for?
2006 Chevrolet Tahoe Logo

Related Topics:

83 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

76132 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8273 Answers

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

Answer questions

Manuals & User Guides

Loading...