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How do you clean out a heater core - 2005 Chevrolet Tahoe

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It needs to be flushed out through the hosees

Posted on Mar 12, 2011

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Step by step instruction to replace heater core 1998 oldsmobile 88


1. First you have to disconnect the Oldsmobile vehicle battery, then you have to drain the engine coolant into a clean container, most models don't have a drain plug on the bottom of the radiator, so you must take off the lower radiator hose to drain the system.

2. Second you have to remove the drain tube from the heater's housing and disconnect the heater hoses from the core, to reach out the heat core you have to take off the sound insulators on both sides of the car, then the steering column's opening filler and finally the air outlet duct and the floor air outlet.

3. Third you have to disconnect the heater core cover and then remove the core-to-housing mounting clamps and remove the heater core.

4. Fourth you have to Install the new heater core and connect the mountain clamps. I did a quick online search and if you need new Heater Core this site looks like it has cheap prices, free shipping and great reviews http://www.buyautoparts.com/heater_core.htm

5. Fifth Replace all the core cover,rear floor air outlet, air outlet duct, steering column opening filler, sound insulators and center console (if equipped). Reattach the heater hoses to the core and the drain tube to the housing and fill the cooling system, using new coolant if the old liquid doesn't appear clean. Be sure the lower radiator hose is securely back in place before filling the radiator. Reconnect the negative battery cable.

Oct 07, 2013 | 1999 Oldsmobile Bravada

1 Answer

92 chevy 1500 silverado Changed thermostat,heater core, core hose not hot. No heat


It sounds like your heater core is stopped up. try flushing it out, you can use a water hose. and if you cant get it to clean out then you will need to change the heater core.

Oct 17, 2011 | 1992 Chevrolet K1500

2 Answers

Heater core problems no heat changed thermostat still no heat any ideas


try flushing cooling system could be a blocked heater core.if flushing doesnt work remove and replace heatercore.

Nov 26, 2010 | 2002 Ford Taurus

1 Answer

Instuctions for removing heater core


  • Disconnect the negative cable from the Oldsmobile Alero's battery. While the car is securely raised on jack stands, drain the engine coolant into a clean container. Most models don't have a drain plug on the bottom of the radiator, so you must take off the lower radiator hose to drain the system.
  • Step 2 Remove the drain tube from the heater's housing and disconnect the heater hoses from the core. Take off the center console, if one is equipped. Then, take off the sound insulators on both sides of the car, the steering column's opening filler, the air outlet duct and the floor air outlet to reach the heater core.
  • Step 3 Disconnect the heater core cover. Remove the core-to-housing mounting clamps and remove the heater core.
  • Step 4 Install the replacement heater core. Connect the mounting clamps and replace the core cover.
  • Step 5 Replace the rear floor air outlet, air outlet duct, steering column opening filler, sound insulators and center console (if equipped). Reattach the heater hoses to the core and the drain tube to the housing.
  • Step 6 Fill the cooling system, using new coolant if the old liquid doesn't appear clean. Be sure the lower radiator hose is securely back in place before filling the radiator. Reconnect the negative battery cable.
  • Step 7 Start up the Oldsmobile Alero's engine and let it run until it reaches normal operating temperature. Observe the climate control operation and check for any leaks in the system.


  • Read more: How to Replace the Heater Core in an Oldsmobile Alero | eHow.com http://www.ehow.com/how_4590629_replace-heater-core-oldsmobile-alero.html#ixzz0uQeICxug

    Jul 22, 2010 | 2000 Oldsmobile Alero

    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

    How to install a new top and bottom hvac heater hose fitting for a 2002 buick lesabre custom


    The hoses are moved by turning them a few degree's, then pulling them off. See diagram below.

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    Jun 19, 2010 | 2002 Buick LeSabre

    2 Answers

    No heat in the cab. Replaced thermostat but that didnt fix the problem. Inlet hose to the heater core is hot but the outlet hose is barely warm when the engine is at operating temp. Clooged core?


    Smiley,

    You definitely have a clogged heater core, unfortunately those things get clogged with sediment and it is better to replace them then to clean them out. Since you have a truck the core should be easy to access. In most cars you have to remove the whole dash. I would recommend replacement as opposed to cleaning or flushing, as most sediment that builds up in the heater core is the inner coating of the core itself which has worn away due to multiple heating cycles.

    Nov 13, 2009 | 1993 Dodge Dakota

    1 Answer

    How to repair heater core


    The step by step procedure to remove the heater core is given below :
    1. Disconnect the negative battery cable.
    2. Drain the engine coolant into a clean container for reuse.
    3. Raise and safely support the vehicle.
    4. Remove the rear lateral transaxle strut mount, if necessary.
    5. Remove the drain tube and disconnect the heater hoses from the core tubes, lower the vehicle.
    6. Remove the sound insulators, console extensions and/or steering column filler, as required.
    7. Remove the floor console outlet ductwork and hoses.
    8. Remove the heater core cover.
    9. Remove the heater core mounting clamps and remove the heater core.

    Sep 27, 2009 | 1994 Buick Skylark

    1 Answer

    Heater


    The heater in your car depends upon a flow of hot coolant going through the heater core in order to get hot air into the car. If the heater core is partially plugged, it will restrict the flow. If you have a head gasket that is putting exhaust into the cooling system, it will eventually get into the heater core. When this happens there is no coolant in the heater core to make the air warm. If the water pump vanes have corroded away the result will be very poor coolant circulation causing the heater to not blow hot air. If your car is equipped with a heater control valve that is not functioning properly, the coolant flow will be restricted. One or a combination of these factors is likely the culprit in your case.

    To attempt to clean the core, you must flush the system multiple times. If this does not work, the core cannot be cleaned and must be replaced.

    Jan 16, 2009 | 1988 Buick Riviera

    1 Answer

    I have little heat


    the best way to clean out a heater core of gunk on a dodge neon is unhook the heater core lines from the fire wall after draining all the old coolant and then run a water hose to the heater core, do the top line first and then do the botom one after about a min. while the coolant is out replace the thermoustat.

    Dec 18, 2008 | 1996 Dodge Neon

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