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How do you remove the heater core on a 1985 bonnyville?

Updated: 8/17/2019
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14y ago

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  1. Disconnect the negative battery cable, heater blower resistor wires and blower wires. Disconnect the heater core ground strap at the dash panel.

  2. Drain the cooling system and then disconnect both heater hoses at the heater.
  3. Remove the seven screws attaching the heater/blower case to the plenum and remove the heater/blower base.
  4. Remove the four screws from the heater core shroud, and then remove the shroud and core assembly.
  5. Separate the core from the shroud by removing the three screws and core mounting clamps and then separating the two.
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Q: How do you remove the heater core on a 1985 bonnyville?
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