Question about 1999 Pontiac Montana

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How do u remove a dash from a 2001 montana van? I need to get to the heater core to find a leak

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How to get to the air conditioner unit in a 2002 montana van

Posted on Aug 02, 2011

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Where are both heater cores located on a 2000 pontiac montana


Front heater core is roughly center of dash near the floor in the heater/a/c housing.The rear heater core is on the drivers side at the rear of the van under the plastic side trim and once you remove that ,it is in the rear heater/a/c housing.Both are hard to get at,so make sure you need to change them.

Jan 14, 2017 | 2000 Pontiac Montana

1 Answer

Heater hose busted on my 2001 Montana van


If it's a heater hose, it will go to the firewall behind engine, where it connects to the heater core's fitting that juts out from firewall. Hose goes over that fitting. Heater hoses are fairly easy to replace, maybe not so easy on yours, due to lack of space. Drain the coolant before taking off hose, loosen clamps on it, then start pulling it off. Watch for a hose holding bracket that also needs to be removed before hose is completely free. Some do, some don't have such a bracket. Hire a neighborhood kid that works on cars to replace it, as sometimes that hose to heater core fitting can get stuck on tight, and if one starts yanking or pulling on it, you can break the fitting and will then need a new heater core-big expense to replace. Good luck and merry christmas in capital letters, lol.

Dec 24, 2012 | 2001 Pontiac Montana

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Have a 2001 montana, ENGINE does not overheat, but has no heat out of heater core, replaced the thermostat.


Could be a blend door problem under the dash.
If one heater hose is hot and the other is not, could also be a blockage in the heater core.

Jul 01, 2012 | 2001 Pontiac Montana

1 Answer

Im replacing the heater core in 2001 jeep cherokee...i have the dash off down to fire wall...all screws are out of bottom heater box but I cant remove the bottom of box to get to heater core...what am I...


If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing
  • The heater housing is usually under the dash and must be removed to gain access to the heater core.
  • Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
  • Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
  • Remove the heater coolant hoses.
  • Remove the cable and/or vacuum control lines (if equipped).
  • Remove the heater core securing brackets and/or clamps.
  • Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
  • To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

Dec 19, 2010 | 2001 Jeep Grand Cherokee

1 Answer

Nebraskadad2007@live.com. I bypassed my heater core till I'm able to get a new one but something is still leakin inside the van on both sides in front. Any ideas what to do or look for?


If you by-pass heater core, there's is no more coolant going into the dash (heater core), could just be left over coolant in a/c-heater housing, when it was leaking.There's nothing else under the dash the used cooling to work, but heater core, and that's by-pass.

Aug 19, 2010 | 2002 Pontiac Montana

1 Answer

Heater Core Replacement


will require about 12 hours to do,you need to drop steering wheel and shaft assembly,you need to remove the entire dash from van,then you get to heater box assembly,there is another 2 hours,then you get to the heater core,

Dec 30, 2009 | 2001 Dodge Caravan

2 Answers

How to install a heater core on a 2005 dodge grand caravan


Very easy if you go through the lower part near the peddles

Dec 24, 2009 | 2005 Dodge Caravan

1 Answer

Heateer core leak


yes you can take the 2 hoses going to the heater core and join the 2 together under the hood so that coolant flows thru the hoses but not thru the heater core

Apr 16, 2009 | 2001 Pontiac Montana

2 Answers

Montana air conditioning leaks at evaporator core


Most likely the condensor...not the evap. Get a good AC&R auto shop to install ClipLight sealant...problem solved.

Mar 23, 2009 | 2001 Pontiac Montana

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