Question about 2004 Pontiac Bonneville

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How to replace heater core in 2004 bonneville

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6ya6ya
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Posted on Jan 02, 2017

oneStan
  • 430 Answers

SOURCE: how to replace heater core

It's a good idea to disconnect the battery to prevent any electrical issues during the job. You could drain some of the coolant to try & minimize the amount of spillage but unless you pump the fluid out of the hoses, you will spill some.

Remove the hoses from the heater core on the firewall side. There are several things you will need to remove under the dash & around the glove box area that you will see need to be removed (electrical & any padding/insulation/trim that obstructs the core cover, but you can eventually remove the heater core from the dash without actually removing the entire dash or a/c & heater assembly. Once you get access to the front of the heater assembly, remove the screws that hold on the heater core cover, remove the cover and you'll see the end of the heater core which can be removed & replaced. Generally, a gentle nudge from the firewall side where you removed the hoses will help. Then reassemble & hopefully you'll have heat & no leak. I suggest that in cold weather, you dip the hose ends into hot water prior to attempting to put them over the new heater core ends, this will only aid in the installation & prevent damaging the ends.

You may want to look at the new part before you start to identify just how it fits in the heater unit, based on the hoses from the firewall side that you can see & it will give you a good idea of how this all works. good luck

Posted on Jan 29, 2010

leirob007
  • 5 Answers

SOURCE: 1997 bonneville ssei

Grab yourself a cable type hose clamp tool.. a long pair of hose removal pliers. drain the radiator and remove the hose clamps and hosed from the passenger side firewall ( hidden behind the A/c acumulator ).
from the passenger side remove the end cap from the heater box under the dash. take it out and put it back together in the reverse order.

Posted on Nov 16, 2008

  • 89 Answers

SOURCE: How do you replace the heater core?

should be under dash behind glove box, remove hoses and glovebox open panal and remove core. berrydalewolf

Posted on Oct 27, 2009

emissionwiz
  • 75822 Answers

SOURCE: to replace the heater core in a 2004 neon how do

U have to remove the entire dash assmbly.

Posted on Nov 20, 2009

  • 2002 Answers

SOURCE: I need copies of the

You can get the actual service manuals at faxonautoliterarure.com and have them for future reference as well. Hope this helps.

Posted on Nov 10, 2010

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1 Answer

Heater core leaking


Must replace the heater core. Its usually a very hard job that requires disassembly of the dash. If you insist on doing the job yourself, I suggest getting a repair manual from your local auto parts store so you can use it as a reference as you work. Here is a link to a video on a 98, yours will be very similar: http://www.youtube.com/results?search_query=1991+Pontiac+Bonneville+heater+core+replacement&sm=12

Dec 09, 2013 | 1991 Pontiac Bonneville

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Heater core replacement


Check under the dash, there you find a panel , remove it. There you find the heater core, first remove the hoses connected then remove screws.

Sep 06, 2008 | 2000 Pontiac Bonneville

1 Answer

Heater core


Remove the dash, remove all fasteners and seperate the heater core housing, remove the core. Install in reverse order. Its a tough job for a novice, i suggest let a shop do it.

Dec 06, 2013 | 1993 Pontiac Bonneville

1 Answer

Why wont the heater blow out hot air in my 1995 pontiac bonneville. it will only blow cool air


If the heater hoses are getting hot, the problem may be a faulty blend door under the dash. The blend doors direct air thru the heater core and the vents.

Oct 12, 2012 | 1995 Pontiac Bonneville

1 Answer

How to replace the heater core


its a tough job because it is located behind the dashboard in the car so the dash and and everything blocking the heater core will have to come out once you get to it its an easy replacement

Nov 18, 2011 | 1995 Pontiac Bonneville

1 Answer

I have a 94 bonneville..it blows luke warm air..radiator is full..new thermostat..and there is a lil antifreeze by the heater core..like its drippin..


Check all your fittings and connections around the heater core. If those are good, time to replace the heater core.

Jan 20, 2011 | 1994 Pontiac Bonneville

1 Answer

I need to install a heater core for a 2001 Pontiac bonneville I need instructions on how to remove and install it.


prev.gif next.gif HEATER CORE REMOVAL AND INSTALLATION 1997–01 Models BONNEVILLE AND LESABRE
  1. Disconnect the negative battery cable.
  2. Drain the cooling system into a clean container for reuse.
  3. Remove or disconnect the following:
    • Heater hoses from the heater core
    • Right sound insulator
    • All necessary electrical connectors and remove the instrument panel compartment
    • Temperature valve actuator
    • Electrical connector and remove the HVAC programmer
    • Heater core cover-to-heater assembly screws and the cover
    • Heater core-to-heater assembly screws and the heater core Fig. 1: View of the heater hoses and clamp positions — 1997–01 Bonneville and LeSabre 93111g71.gif
      Fig. 2: View of the heater core cover — 1997–01 Bonneville and LeSabre 93111g72.gif
    To install:
  4. Install or connect the following:
    • Heater core and the heater core-to-heater assembly screws, then, tighten the screws to 12 inch lbs. (1.4 Nm)
    • Heater core cover and the cover-to-heater assembly screws, then, tighten the screws to 12 inch lbs. (1.4 Nm)
    • HVAC programmer and connect the electrical connector
    • Temperature valve actuator
    • Instrument panel compartment and connect any necessary electrical connectors
    • Right sound insulator
    • Heater hoses to the heater core
  5. Refill the cooling system.
  6. Connect the negative battery cable.
  7. Operate the engine to normal operating temperatures; then, check the climate control operation and check for leaks.

Jul 01, 2010 | 2001 Pontiac Bonneville

2 Answers

My heat or my air doesn't work in my 1995 Pontiac Bonneville but it blows good. What could be the issue?


my 2004 pontaic bonneville the heater hoses going into and out from the heater core are hot , but the heater blow cold air. ,

Oct 16, 2009 | Pontiac Bonneville Cars & Trucks

2 Answers

1997 Bonneville SSE, when the heater is turned on, only cold air


you may have a failed blend air door motor/actuator. this part will regulate the amount of air from the heater core depending on the temp setting on your electronic climate control unit. if it has failed, it will be stuck at the temp that it was last set at when it quit working. it is also possible the heater core may be plugged up, but using the gm recommended dexcool coolant and flushing it out every 5 years, it should not be plugged up. you can pull the 2 heater hoses off the heater core on the passenger side of the engine compartment firewall and see if the heater core is the problem. caution-do not use a high pressure air hose to blow through the heater core as this could damage it and cause a leak!

Oct 15, 2009 | 1997 Pontiac Bonneville

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