Question about 1994 Pontiac Trans Sport

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I Need To Change The Heater Core In My 1994 Pontiac Transport 3.1 litre.. how do I do this ??

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6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: Pontiac Fiero Heater Core

no its actually really easy i just did it about 3 weeks ago. right under the dash on the passenger side the is a black box unscrew the cover on the side of it and the heater core is right there then you have to  disconnect the hoses under the hood which might be the hardest part after that unbolt the straps holding the heater core on. I keep the straps on till i get the hoses off because then the heater core don't move when you are trying to get the hoses off. Then all you have to do is put it back together.

Posted on Nov 23, 2008

  • 57 Answers

SOURCE: 1994 pontiac firebird HAS NO HEAT

Okay. warm up vehicle, get radiator hoses hot.  Turn on heater, fan on low.  Grip both rubber heater hoses close to the firewall, from the engine compartment side.  They should be too hot to hold for long.  If they are not hot, then you have a lack of coolant circulation to the heater hoses.  If they are hot then access heater core, behind glove box area.  Blend door which moves as you chose HOT or Cold, should be cable controlled, move the controls and be sure the door is actually moving. Keep me posted 

Posted on Dec 17, 2008

johnsmith992
  • 37 Answers

SOURCE: Replace heater core in Pontiac Grand Am GT 3.4l

ram a sharp chissel or pointed head centre punch through the core and prise it out .,than tap the new one in place ,,,there u go bobs ure uncle

Posted on Jan 29, 2009

  • 16 Answers

SOURCE: what are the steps needed to remove and replace the heater core

REMOVE OR DISCONNECT

  1. Negative battery cable and drain cooling system.
  2. Raise vehicle and remove drain tube from heater case.
  3. Heater hoses from heater core and lower vehicle.
  4. Right and left sound insulators and steering column opening filler.
  5. Floor air outlet duct and heater core cover.
  6. Heater core mounting clamps and remove heater core.
INSTALL OR CONNECT

  1. Heater core and heater core mounting clamps.
  2. Heater core cover and floor air outlet duct.
  3. Right and left sound insulators and steering column opening filler.
  4. Raise vehicle and connect heater hoses to heater core.
  5. Drain tube to heater case and lower vehicle.
  6. Negative battery cable and fill cooling system.
  7. Check for leaks.

Posted on Apr 03, 2009

  • 451 Answers

SOURCE: How do replace heater core in 2002 Pontiac Gran Prix

i do believe you have to take the passengers side dash apart behind the glove compartment. go to autozone and get a manual or go to the library and check the chiltons manual. this is not an easy job. how bad is the leak? if its not bad these heater cores are made of all aluminum. i would buy a bottle of that radiator additive and see if that takes care of the problem first. it only cost about 5 bucks a bottle and it may permanantly fix your problem.

Posted on Aug 13, 2009

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I have a 1994 pontiac grand prix 3.4 liter and i need to change the heater core so how do i do that


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Check all your fuses just in case.

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Sherwin

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