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Heater core

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by chaser48, Oct 20, 2011.

  1. chaser48

    chaser48 New Member

    What can I use to flush out just the heater core with out contamiting the cooling system:idea:
  2. nos351wcm

    nos351wcm Rockstar

    You can use water. Disconnect the two hoses that carry coolant into and out of the heater core. This will ensure you do not contaminate the rest of the cooling system. Hope this helps
  3. chaser48

    chaser48 New Member

    Thanks for the info

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