Edmunds Answers

Answers

  • sprescott 10/09/09 8:09 pm PST

    Hi

    I'm not a 100% but check behind the glove box for a access panel.
    Also there are some DIY auto repair information sites that can provide you with repair manuals,tecnical service bulletins and much more for around $ 15

    Look at the fire wall wher the heater hoses go in,the older GM trucks heater core was accessed by removing the box that the blower motor is mounted. Please be carefull with the A/C you may have to discharge in order to service the heater core.

    Hope this helps

  • 0patience 10/10/09 1:23 am PST

    Sorry, no pics, but here is the procedure.

    Drain the engine coolant.
    Disconnect the heater hoses.
    Disconnect the temperature control cable from the heater/ventilation module.
    Disconnect the mode control cable from the heater/ventilation module.
    Remove the instrument panel (IP) carrier.
    Disconnect the electrical harnesses and the ground connections as necessary.
    Remove the heater/ventilation module mounting nuts and the screws.
    Remove the heater/ventilation module assembly. Set the module assembly on a bench.
    Remove the heater core cover screws.
    Remove the heater core cover.
    Remove the heater core.
    INSTALLATION PROCEDURE
    Install the heater core.
    Install the heater core cover.Connect the electrical harnesses and the ground connections as necessary.
    Install the instrument panel carrier.
    Connect the mode control cable to the heater/ventilation module.
    Connect the temperature control cable to the heater/ventilation module.
    Connect the heater hoses.
    Refill the engine coolant.
    Install heater core cover screws. Tighten Tighten the screws to 1.6 N.m (14 lb in) .
    Install the heater/ventilation module assembly to the vehicle.
    Install the heater/ventilation module mounting nuts and the screws. Tighten
    Tighten the screws to 4 N.m (35 lb in) .
    Tighten the nuts to 9 N.m (80 lb in) .



  • cavemanauto 06/25/10 8:11 pm PST

    You have to partially drain the radiator. Drain the A/C, remove the ac accumulator. Remove the entire dash, including all the plug-ins, and the steering column. Then the HVAC module that contains the a/c & heater cores, and blend doors, and duct work. It is very difficult even for an experience mechanic. I would rather remove a transmission, or even the engine than do one of these. Shops will usually charge you about $600-800.

    Even if you buy a manual, or alldata.com it is pretty sketchy even with the step by step and the pictures.

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