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How to change a heater core on 2008 Chevrolet Impala

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  • Chevrolet Master
  • 1,992 Answers

This is a BIG job involving discharging the a/c system and removing the entire dash assembly. If you think you want to do this, I strongly recommend purchasing a service manual from the manufacturer, or at least a Haynes/Chilton manual from your local auto parts store for guidance. I'll attach a link to a YouTube video showing the process for a similar car (Buick Lucerne). The exact steps won't be the same, but you'll get an idea of what you're in for.
Heater core replacement 2006 2011 Buick Lucerne

Posted on Dec 29, 2016

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Posted on Jan 02, 2017

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chiquititas
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SOURCE: heater core on a 2003 Chevrolet pickup 4 wheel drive crew cab

if you have air conditioning you will need to take it to a garage and recover the r134, you will need to remove the dash to allow you to remove the heater box, it's an ugly job, I've done a dozen or so and can do it in about 6 hours now, the first time it was closer to 11 hrs, good luck

Posted on May 15, 2008

danny_murray
  • 55 Answers

SOURCE: heater core

You have to pull the dash and all the lower fascia, then remove the box that houses the Heater Core Take the clamps off the heater hoses from the engine compartment side of the firewall and disconnect the heater hoses. Disconnect the bracket that holds the heater core in place from the inside of the passenger compartment (if present.) Carefully remove the heater core and discard it. Install a new heater core reversing the above steps.

Posted on Dec 05, 2008

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

  • 82 Answers

SOURCE: bad heater core

look undre the passenger side dash and you will see a black box. Look closely and you will see screws in it around the edges. remove all the screws then remove the cover,there is the heater core, held in by 1 screw that is kinda hard to see. next look under the hood on the passenger side firewall right in front of the dash, you will see 2 hoses with clamps on them. loosen the clamps and remove the hoses. you may want to drain the radiator first but I never do

Posted on May 05, 2009

Zeevert
  • 373 Answers

SOURCE: 2003 Impala: HOW DO I CHANGE BATTERY 2005 CHEVROLET IMPALA...

The battery is under the hood, just behind the passenger headlight.
There is a black bar that crosses over the battery and goes back towards strut tower. Remove this bar and the three bolts; probably a 12 or 13mm socket.
Remove the negative (black) battery cable with an 8mm socket or wrench. A 5/16" should work also.
Then remove the positive (red) cable with same socket.
Remove the battery clamp and bolt. Probably a 12mm socket with extension.
It's tight, but the battery can be removed.
Reverse instructions for installing the battery. (That includes hooking up the red battery cable first, then the black cable.)

Posted on Jun 06, 2010

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1 Answer

Where is the heater core on 08impala and how do I change it


The heater core is under the dash between the middle of the dash and the passenger side. You will need to drain the radiator and remove the heater hoses from the inlet and outlet to the heater core under the hood. Once that is done you will need to remove the plastic covers inside the car to reveal the heater core. Remove the clamp that holds the core and replace it. Then just go in reverse and put the car back together. Use caution when pouring the antifreeze back in, don't pour it in fast or you will get an airlock and the radiator will knock and boil over when you start it up. Let the car warm up before you put the radiator cap back on so you can see if you need to add more antifreeze after the thermostat opens. Good luck

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1 Answer

Changing heater core


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1 Answer

Where is the transmitter plugged in on a 2008 Ltd impala?


The BCM is the item that you are talking about and it is behind the dash radio.

Feb 26, 2015 | 2008 Chevrolet Impala

1 Answer

2008 impala only gets warm air blowing when driving ,also can hear bubbling from passenger side near firewall


It could be your heater core or check your over flow tank for the radiator to see if it is your antifreeze is up to the line marked on the side of tank and check the over flow hose, make sure the clamps are tight.

Nov 22, 2013 | 2008 Chevrolet Impala LT

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Were is the heater core on 2007 chevy impala ls 3.5l


heater core is usually buried under the dash in the center, under everything else

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1 Answer

Have a 07 impala 3.9 only blows out heat when i'm driving


water pump or heater core if not real hot when ur driving

Jan 16, 2013 | 2008 Chevrolet Impala

1 Answer

How to replace 2008 impala heater core


Most heater cores are located behind the dashboard. This can be a difficult job putting it back together. Be sure it really is the heater core. ie water on the floor boards,the smell of antifreeze inside the cabin.Steamed windows all indicate the heater core.

Oct 12, 2012 | 2008 Chevrolet Impala

2 Answers

Heater core is not heating up


Flush and fill yor system. Change the thermostat. If this doesn't work you probably need to replace the heater core.

Jan 01, 2010 | 1996 Chevrolet Impala SS

1 Answer

2008 Chevy Impala, was in a front end collision, the heater only blows hot air when the rpms are above idle. when at idle it blows cold. Any ideas?


There's probably a little vacuum actuated valve in one of the hoses going from the engine block to the heater core. make sure this valve is working.

Also... check coolant level

and

Your water pump may be marginal, only circulating adequate collant at engine speeds above 1000 RPM or so.

Mar 08, 2009 | 2005 Chevrolet Impala

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