Question about 2001 Pontiac Bonneville

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

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I need to install a heater core for a 2001 Pontiac - 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 BonnevilleI need to install a heater core for a 2001 Pontiac - 93111g72.gif 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.

Posted on Jul 15, 2010

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Heater Core Removal & Installation To Remove:
  1. Remove the HVAC housing.
  2. Turn the HVAC housing over.
  3. Remove the heater core case cover.
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  5. Remove the heater core.
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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

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The sound deadener under the carpet is probably trashed. Use a wet-vac to remove most of the fluid from the material and foot well, but you are better off replacing it as soon as possible before it rots and causes health problems.

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