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How to use Klima Cleaner on 1999 Silverado dually.

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by siclmn, Mar 7, 2013.

  1. siclmn

    siclmn New Member

    I want to buy some Klima Cleaner and spray the evaporator, you need to drill a hole above the evaporator and spray the foam over it.
    The hole is supposed to be somewhere on the firewall but I need a picture and measurements of where to drill the hole.
    I have sprayed entire cans of lysol into both intake vents with no results.
    This truck has no cabin filter.
    The drain hose is not plugged.
    It only comes from the heater not the air conditioning. It always gets better after the heater is on for 20 minuites or so.
    There is no sweet smell or foggy windows

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