Question about 2004 Chevrolet Impala

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How to remove heater core on 2004 impala water leak in core

Posted by Anonymous on

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

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Posted on Jan 02, 2017

allinbilly
  • 14 Answers

SOURCE: CHANGING THE HEATER CORE OF AN 04 IMPALA

Drain the coolant. Remove the dashboard first, then a bunch of air ducts, then the heater core cover. Remove the heater hoses in the rear of the motor, and finally the heater core.

Posted on Feb 21, 2009

localwonder
  • 6784 Answers

SOURCE: heater core

HI. This is not an easy job but, im sure you will be able to accomplish this with a little guidance. I have put together a guide for you to follow. Its a step by step guide and, it will help you with this replacement of your heater core.


REMOVING THE OLD CORE--

#
Step 1

Jack up the car and drain the Impala's cooling system. Loosen the water pump's drain bolt and let the coolant drain into a pan. Close the drain bolt and lower the car afterward.
#
Step 2

Remove the heater outlet and inlet hose from the heater core (reposition the hose clamps to do so). Take off the right console extension panel, body control module and left side extension panel on the front floor console
#
Step 3

Disconnect the left instrument center support bracket (pull away the carpet at its bottom to reach the nuts). Remove the accelerator control pedal from its position in the front of the dash.
#
Step 4

Disengage the center floor ducts by raising the outlet duct while pushing the ducts down. Rotate the outlet duct forward in the car and pull down to remove it from the HVAC module.
#
Step 5

Use a small chisel to remove all the heat stakes from the heater core cover. Loosen the nut behind the fuel line bracket. Remove the dash panel's stud at the heater hoses.
#
Step 6

Pull the core's cover down enough to reach the HVAC module's locating pins. Slide the cover rearward until the drain tube clears the dash front. Remove the cover by sliding it down, rearward, and to the right. You can now remove the core.
Installing the New Core


INSTALLING THE NEW CORE---

#
Step 1

Install the new core into the HVAC module, attaching a new seal onto the drain tube. Attach the core cover from the right side, sliding it up and forward into position.
#
Step 2

Align the drain tube with the front dash hole and the core cover holes with the HVAC locating pins. Install the core cover screws, cutting and folding back the sound insulator near the center screw to ease that screw's installation.
#
Step 3

Reinstall the dash panel stud at the heater hoses, tightening the nut behind the fuel line bracket. Align the center floor duct with the HVAC and push it up while rotating rearward to install it. Put the floor ducts and outlet duct back into the Chevy Impala.
#
Step 4

Attach the accelerator control pedal. Pull the carpet back and position the left center support bracket, then tighten the bracket nuts.
#
Step 5

Reconnect the left side front floor console extension panel and the body control module to the car.
#
Step 6

Put on the outlet hose and inlet hoses to the core, securing them with their clamps. Refill the cooling system with the proper mixture of water and coolant.


Inspect the foam seal for the core on the lower HVAC case. Replace it with adhesive black foam tape if damaged.

Please rate and have a good day:)

Posted on May 06, 2009

  • 6982 Answers

SOURCE: 2004 Chevy Impala no heat from defrost or heater

No heat is often a symptom of low coolant, usually followed by overheat. There are other controls that regulate heater, but right now, re-fill the cooling system with engine running and heater on high, then check for leaks (coolant you lost went somewhere...you need to determine where) Low coolant will damage your engine. Take care of that first, then if heater still does not work, then do diagnosis on that. (if you loose the engine heat won't matter, will it!)

Posted on Sep 22, 2009

Testimonial: "Very helpful! And I appreciate the input very much!"

  • 1 Answer

SOURCE: 2005 impala instruction to remove heater core

oh, sucks for you!! i just replaced mine. it was a total pain in the ***. make sure you run the car up on some car ramps. this will help you quite a bit. because there will be times you'll be standing on your head, and in some horrible positions. it takes time and it takes patience. also make sure you have the correct heater core before you start. thanks to autozone, i drove around for about 3 days with the dash tore apart and the heating system bypassed because they gave me the wrong one. my recomendation is take your time. taking apart and putting together. 1/4 in drive metric set is handy to have. im no mechanic, however im also pretty handy and very mechanically inclined. i'd say with taking apart and putting together it probably took around 9 hours. but i was also by myself. lots of dash taking apart. and my car also has the center console, which didnt help my case. good luck!!!!!

Posted on Nov 26, 2009

j_del
  • 1586 Answers

SOURCE: 2004 Chevy Impala no heat. Fan OK. Engine warms

Your heater core is clogged. You can fix it. Disconnect the two heater hoses and put one into a bucket. Use an air compressor to blow into the other - it'll flush the contents into the bucket. Then reverse it - put the hose you blew into, in the bucket, and blow into the one that was in the bucket. This way, whichever side of the core had the clog, you can blow it out. Reconnect the heater hoses, and then burp the system or you can end up with air bubbles in the cooling system that can cause you to overheat. Click my screenname, go to Tips and Tricks, and follow the procedure there - it'll walk you through the whole procedure step by step.

Posted on Dec 23, 2009

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1 Answer

How do i change a heater core on a 2004 impala?


If it is not leaking, you probably don't need to change it. There are flapper doors which direct where air goes in the system. The flapper used to direct air through the heater core is not working. This can be caused by a vacuum leak anywhere in the engine or heater/A/C unit, a bad leaking control head, or most likely a bad flapper door actuator, hidden deep under the dash. See shop manual.

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Why doi hear water in the dash on a 2004 chevy impala


That's the antifreeze entering and exiting the heater core, which is located behind the glove box of the dashboard. If there is sweet smell or antifreeze on the inside floor on the passenger side, you have a leak in the heater core.

Aug 26, 2014 | 2004 Chevrolet Impala

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How can I tell how long my heater core has been bad in my 2004 impala?


You can tell by the build up of the white powdery dried engine coolant around the area of the leak on the core. That is the only way.

Oct 30, 2012 | 2004 Chevrolet Impala

1 Answer

Check the relays, fans, change the thermostst, now about to the change heater core. it sill was over heating and water came from the heater core on to the floor board.


If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing
  • The heater housing is usually under the dash and must be removed to gain access to the heater core.
  • Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
  • Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
  • Remove the heater coolant hoses.
  • Remove the cable and/or vacuum control lines (if equipped).
  • Remove the heater core securing brackets and/or clamps.
  • Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
  • To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

Dec 22, 2010 | 2002 Chevrolet Impala

1 Answer

Heater does not warm up. it blows out cold air


I would inspect the car for coolant leaks. If there are any they need to be repaired. Check coolan level in radiator, if full than follow this procedure. Change radiator thermostat. Drain old coolant. Remove heater core hose. Take a garden hose and run water through the heater core for 3-4 minutes or until clear. Retighten Hose. Fill radiator with premix coolant. Star car and let run with defroster on and heat on full blast. Let run for 20-30 minutes and wait till radiator fan to come on. Add coolant as the level drops in the radiator.Also open coolant bleeder screws to purge out air.

Oct 05, 2010 | 2004 Chevrolet Impala

1 Answer

I am having trouble finding a coolant leak, on the firewall side of a3.8 liter chevy engine, Impala. hoses look good, new water pump. what is there up behind there to leak?


the heater hoses pass through the firewall into the heater core, which resides inside the dashboard. either one of the hoses themselves is leaking, or the heater core.

Feb 21, 2010 | 2000 Chevrolet Impala

2 Answers

2004 Chevy Impala no heat. Fan OK. Engine warms up in normal time. 1 heater hose hot other one is not. Adjusting the heater control doesn't do anything. What controls the flow of water through the heater...


Your heater core is clogged. You can fix it. Disconnect the two heater hoses and put one into a bucket. Use an air compressor to blow into the other - it'll flush the contents into the bucket. Then reverse it - put the hose you blew into, in the bucket, and blow into the one that was in the bucket. This way, whichever side of the core had the clog, you can blow it out. Reconnect the heater hoses, and then burp the system or you can end up with air bubbles in the cooling system that can cause you to overheat. Click my screenname, go to Tips and Tricks, and follow the procedure there - it'll walk you through the whole procedure step by step.

Dec 23, 2009 | 2004 Chevrolet Impala

1 Answer

I just got this 2004 impala police car. I found coolant inside on floor. I can tell it flow from the center of underneath control console. Can any one give me idea how to fix it? Thanks Hanping


unfortunately it is not an easy fix. Your heater core is bad. The heater core is behind the glove box. you may be able to go in under the dash on passenger side, which is where it should be leaking at, and pull it out there. However, it may be easier to remove the glove box and re-install it after you change the core. YOu could have a loose hose on it, however I bet it is a bad core.

Nov 03, 2009 | 2004 Chevrolet Impala

4 Answers

2004 Chevy Impala no heat from defrost or heater


No heat is often a symptom of low coolant, usually followed by overheat. There are other controls that regulate heater, but right now, re-fill the cooling system with engine running and heater on high, then check for leaks (coolant you lost went somewhere...you need to determine where) Low coolant will damage your engine. Take care of that first, then if heater still does not work, then do diagnosis on that. (if you loose the engine heat won't matter, will it!)

Sep 22, 2009 | 2004 Chevrolet Impala

1 Answer

Heater core instructions for 04 Chevy Impala SS


Before you go thru that expense. If it is water leaking,check the evaporator. Sometimes it gets plugged with debris. So first, decide if it is water or anti-freeze. Also, I have taken the heater hoses off of the inside of the motor area and flushed the core out. It works on some.

Jun 01, 2009 | 2004 Chevrolet Impala

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