Question about 1997 Pontiac Sunfire

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Steps for replacing the heater core in a 1997 pontiac sunfire

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  • yadayada
    yadayada May 11, 2010

    REMOVE THE DASH ASSEMBLY PLEASE.

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This is a fairly easy fix.The steps are as follows:

  1. Disconnect the heater hoses under the hood.
  2. Go to passenger side under the dash remove the lower panel from the dash to access the heater box.
  3. Unplug any and all connections on the lower half of the heater box and remove the lower half of the box should be about six screws you should see the heater core and the evaporator core.
  4. Heater core skinnier of the two should have one or two straps holding it in remove the straps and remove the core and replace.

Posted on Nov 15, 2009

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I replaced the heater core in a 1997 pontiac sunfire now it starts and then quits not sure why please help


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Have to replace the heater core on a 1997 Pot.


This is a fairly easy fix. Disconnect the heater hoses under the hood. Go to passenger side under the dash remove the lower panel from the dash to access the heater box. Unplug any and all connections on the lower half of the heater box and remove the lower half of the box should be about six screws you should see the heater core and the evaporator core. Heater core skinnier of the two should have one or two straps holding it in remove the straps and remove the core and replace.

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there are 2 hoses that enter the firewall connect them together and your problem is solved just no heat for you. otherwise spend 8-10 hours ripping out the dash and spend 40 bucks on a new heater core. then 8-10 to put it back together again.

Jul 24, 2008 | 1997 Pontiac Sunfire

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