My heater controls, are in the exact same condition. You can buy one new still for 75$ problem is removing it....what I am doing, is super gluing it back together, cutting some metal and wiring it to the housing to make a brace for the controls.

You may also want to look at my thread and redo all the foam on the flaps, since you have the box out....and also clean the heater core and evaporator.

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