where is the thermostat located in 2003 deville
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Northstar Engines and System Technical Discussion Discussion, where is the thermostat located in 2003 deville in Cadillac Engine Technical Discussion; where is thermostat located on 03 deville...
  1. #1
    gutierrezcaddy's Avatar
    gutierrezcaddy is offline Cadillac Owners Member
    Automobile(s): 03 deville dhs,05 cts-v,
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    where is the thermostat located in 2003 deville

    where is thermostat located on 03 deville

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: where is the thermostat located in 2003 deville

    I want to say it's the upper hose but I am not sure. It should be obvious by looking at it though.

  4. #3
    JimHare's Avatar
    JimHare is offline Cadillac Owners Connoisseur
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    Re: where is the thermostat located in 2003 deville

    It's where the radiator OUTLET hose connects to the engine. The outlet hose is the one on the drivers side of the radiator, about half way down. The inlet hose is the one on the other side, at the top, of the radiator. The thermstat housing sits on the water pump housing.

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