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block heater?

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by ss_silverado_phoneix99325, Oct 8, 2007.

  1. Absurd this may sound. Is there any way leaving your block heater on to long on a cold winter night could do damage to your vehicle? 99 silverado
  2. Cableguy

    Cableguy Epic Member 5+ Years ROTM Winner 1000 Posts

    I plug my 99 Savanna in when it drops below -20c. I've never had a problem. (Overnite)
  3. Kevo700r

    Kevo700r New Member

    I know I am late to the thread but I use to live in Fairbanks, AK and the truck was plugged in 24hrs. Really the only time it wasn't was when it was running. Had no problems.
  4. SlimyAvocado

    SlimyAvocado New Member

    I left my blazer plugged in for days...no problems...
    waste of electricity, but no issues...
    Fleets and bus companys leave thier trucks plugged in over the weekend...Only thing I can see happening would be shortening the life of the heater.

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