Question about 2002 Pontiac Firebird

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I have a 2002 pontiac firebird v-6 3800. The heater hoses run into a part that is attached to the motor. I am trying to find the name of the part so I can replace it or find an engine diagram for that motor. Thank you. Paul Lambert

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Paul, if you mean "radiator hose" then the part is the thermostat housing.

Perhaps the part is the bypass valve, which causes the heated water to "bypass" the heater core if the core is restricted.

Posted on Sep 28, 2009

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I have a 98 firebird and the hoses run into the drivebelt assembly on that

Posted on May 04, 2010


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  1. Disconnect the negative battery cable.
  2. Disconnect the hoses and wiring from the fender skirt.
  3. Remove all the fender skirt attaching bolts except those attaching the skirt to the radiator support.
  4. Pull out, then down, on the skirt. Place a block between the skirt and fender.
  5. Remove the blower-to-case attaching screws. Remove the blower assembly.
  6. Remove the blower wheel retaining nut and separate the motor and wheel.
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I need to know what valve is next to the gas tank -valve that if bad causes po440 code on my 2002 pontiac firebird, also what is the name of the part and how to get to it to reove and replace it?

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