Question about 2002 Pontiac Grand Prix

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How do replace heater core in 2002 Pontiac Gran Prix

How do I replace the heater core in a 2002 Pontiac Gran Prix

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  • Mike Butler
    Mike Butler May 11, 2010

    already done, or still waiting?

  • Anonymous Mar 24, 2014

    gas leaks out when filling then is unable to take any gas

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2 Answers

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  • Pontiac Master
  • 451 Answers

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

  • screwyou234 Jan 01, 2011

    If you mess with the electrical you will set off the auto theft system and also take a chance of blowing out your air bags. Believe me I have one to fix too but all the online experts are idiots

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  • Contributor
  • 2 Answers

My 2000 gran prix is dieing while driving it

Posted on Sep 01, 2013

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BCAS1298
  • 3092 Answers

SOURCE: leaking water from heater core 1999 gran prix

If leaking coolant under dash on passenger side floor broad it's your heater core. Call's for 2.8 labor flat time to remove heater core, in some case's you'll have to recover, evacuate and recharge your A/C system to remove your heater core.Sit under dash on passenger side.

Posted on Dec 28, 2009

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6ya6ya
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Posted on Jan 02, 2017

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1 Answer

How to flush a heater core in a pontiac grand prix 2002


If you have warm air on one side and cool on the other, you've a situation with the vent flaps. But to backflush the core, take both hoses off the core and run a garden hose to the outlet side going towards the water pump. This will flush it.

Aug 31, 2014 | 2002 Pontiac Grand Prix

1 Answer

How to install a heater core in a 2002 pontiac grand prix SE


The heater core is under the dash. Go to autozone.com and register with them. Look up heater core in repairs. They will give you free instructions on how to remove and install.

Jan 27, 2013 | 2002 Pontiac Grand Prix

1 Answer

Heater fan wont blow on any setting on 2002 gran prix pontiac?


There are fuses for hi and low blower fan inside the interior fuse panels I know the high one is on the passenger side and believe the low is on the drivers side tho they may both be on the passenger side read the cover after you pull them off easy to find once you read the label if those are both good then its probably the blower resistor, fuse check first.

Jul 25, 2010 | 2002 Pontiac Grand Prix

1 Answer

Leaking water from heater core 1999 gran prix


If leaking coolant under dash on passenger side floor broad it's your heater core. Call's for 2.8 labor flat time to remove heater core, in some case's you'll have to recover, evacuate and recharge your A/C system to remove your heater core.Sit under dash on passenger side.

Dec 28, 2009 | 1999 Pontiac Grand Prix

2 Answers

Found anti freeze on passanger floor Its a 2002 grand prix SE. Is it simple to fix?


It is likely the heater core.It is possibly a 4 hour or less job

Nov 23, 2009 | 2002 Pontiac Grand Prix

1 Answer

Heater blower motor only works on high on 2002 pontiac gran prix se-instructions on diy replacement i have the part. Heater Fan works occasionally on speed 5 only. When it doesn't work at all the lights...


for the fan blower motor it could be the resistor or the fan control speed control switch is bad.for no lights replace the DRL RELAY for the lights. for the heated seats check the fuses.

Jun 01, 2009 | 2002 Pontiac Grand Prix

1 Answer

Heater blower motor only works on high on 2002 pontiac gran prix se-instructions on diy replacement i have the part.


THE BLOWER MOTOR RESITOR IS BAD.IF U HAVE RESITOR IT IS UNDER THE DASH ON THE PASSENGER SIDE AND HELD IN W/TWO SCREWS

May 14, 2009 | 2002 Pontiac Grand Prix

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