NHTSA — Engine And Engine Cooling: Cooling System Problems

3.4

definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
39,333 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2000 Pontiac Montana cooling system problems

cooling system problem

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2000 Pontiac Montana Owner Comments

problem #15

Jul 212009

Montana

  • 155,000 miles

A D V E R T I S E M E N T S

2000 Pontiac Montana intake gasket failed...I've read all the other complaints and just wanted to add mine. I called GM and they said they did not have any complaints relative to this problem, and there was no recall either. I have never used anything but dexcool in this van, now it is going to cost me to have it fixed for following directions....now I understand why Pontiac is being dropped by GM they would not be able to pay all the repair bills if the owned up to their mistake...goodbye Pontiac!!!!!!!!

- Normal, IL, USA

problem #14

Feb 012008

Montana 4-cyl

  • Automatic transmission
  • 50,000 miles
I have 3 children, one disabled. I should have known from day 1 when the manual sliding door broke two weeks after purchase. Almost killed my disabled child when it sprang open on him. Dealer, said he broke it, a child with full body muscle disorders who can't lift a brick. Now we have had unending problems with the engine, coolant levels, the car smells like burnt plastic often, times when I went to start it, nothing happened. Now I am told that the engine will seize soon. Interesting since I always changed the fluids on time and I have only owned it for 5 years. Both side doors do not work, automatic works sometimes, manual comes off the track. One of the rear passenger seats does not fold properly. The car often feels as though it has "bad gas" jerking back and forth while driving it. I am afraid, I have three kids in the car usually. I need a car and now with no money and no ability to buy a new one, I am told that the car will seize if I do not spend $4000 to replace the engine. I am getting a second opinion but from what I am reading, it seems feudal. Shame on GM!! why wasn't this car recalled"?? this is a van, a family car!!! you want to kill children???? I am writing my congressman and the better business bureau. This car should have been taken out of circulation until the problems were ironed out. If something happens to my children, I will make it my personal crusade to shut down all GM plants. The amount of money I put into this car is ridiculous when I had a 20 year old Volvo that is still running. Shame on America! this is why our industries are failing and we must turn to foreign countries. So I have a car that I do not know what to do with. I seriously have no money to replace the engine nor buy a new car. I have children in 3 different schools the oldest needing therapies each day that I must drive him to. What am I to do"

- Staten Island, NY, USA

problem #13

Jul 202006

Montana 6-cyl

  • Automatic transmission
  • 87,000 miles
Intake gasket leaking coolant. This is a gross misconduct on behalf of GM allowing these to fail without any compensation. No events leading up to this failure...just drive normally. Consequences are $1200 to replace a gasket that should have lasted more than six years.

- Ocala, FL, USA

problem #12

Mar 132006

Montana

  • miles

A D V E R T I S E M E N T S

2000 Montana leaked coolant from lower intake gasket.

- Vandalia, MI, USA

problem #11

Apr 272006

Montana 6-cyl

  • Automatic transmission
  • miles
My 2000 Pontiac Montana has coolant leaking into the engine through the intake manifold. I noticed the problem today when I changed the oil. Problem has not been corrected yet. At about 50,000 miles I had to start adding a little coolant to the reservoir with every oil change, but it wasn't enough to notice the water in the oil. Now, with nearly 80,000 miles the leak is bad enough that the coolant light recently came on.

- New London, OH, USA

problem #10

Aug 102002

Montana 6-cyl

  • Automatic transmission
  • 60,000 miles
2000 Pontiac Montana 3.4 liter numerous coolant leaks at intake area at about 60,000 miles. Also coolant cooler allowed oil to get in to the coolant system. I retorqued intake and aleviated problem for about 10,000 miles and then came back. Ended up having dealer replace intake gaskets and they informed me that GM had redesigned the gaskets because of an epidemic of this exact problem. The dealer designated 1 mechanic to specialize with this defect and I talked to the mechanic and he ingformed me that he had done this so much that he could do the wokk in about 3 hrs versus the original 6 to 7 hours it took him the first time his quote "you do it as much as I have and you get very efficient". GM should have recalled and made good on the repair. In the last 20 years I have bought 6 new GM vehicles and I am very dissappointed that the dealer/corporate would not make good on the repair. It cost me $550 for dealer repair. I want to be reimbersed for the repair cost for this is a known defect that GM chose to ignore other that making sure that the newer Montanas (3.4L) have the new designed gaskets.

- Boonville, IN, USA

problem #9

Jan 082005

Montana 6-cyl

  • Automatic transmission
  • 90,000 miles

A D V E R T I S E M E N T S

1.while getting my tires rotated, carx noticed my coolant was leaking. 2. antifreeze was getting into the engine, and if not fixed would damage it. 2. took car to Pontiac dealer. Bill to fix was $650. Replaced the lower intake gasket.

- Carmel, IN, USA

problem #8

Dec 122004

Montana

  • miles
Low coolant light came on. Could smell burning coolant turns out the intake manifold gasket was cracked causing coolant to leak. Paid $900 in repairs. Contacted General Motors and the will not do anything at this time. Seems to be a common problem with this model car. This happened at 71,000 miles.

- Flushing, NY, USA

problem #7

Nov 262004

Montana 6-cyl

  • Automatic transmission
  • 66,000 miles
I have a 2000 Pontiac Montana and have had a coolant leak problem. My van has only 66K miles on it and has been in 2 times for coolant leaks. On 11/26/04 I had a coolant leak and had to have lower manifold gasket replaced. On 12/2/04, leaking coolant into the interior and now have bad heater core. I have been researching and there are many other problems of the same exact cause. I believe this is a manufacturer defect and should be compensated back what I paid out.

- Indianapolis, IN, USA

problem #6

Jun 102003

Montana 6-cyl

  • Automatic transmission
  • miles
At 26,000 miles my van started leaking coolant, alot of it. I took it to the dealership nearby and the mechanic took a quick look and said it would need the engine pulled and all the rubber rings or gaskets in the engine replaced because they were leaking and it was a common problem with this vehicle. He said they need to be replaced with better quality ones because that was the reason they were leaking, that they broked down quickly because they were inferior. And all this would cost me around $1,000. Updated 07/24/2012 information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6)

- Cincinnati, OH, USA

problem #5

Jan 032004

Montana 6-cyl

  • Automatic transmission
  • miles

A D V E R T I S E M E N T S

1/3/04 van failed to start-reason unknown. Took to mechanic to check out and discovered oil leak in the engine at 50,000 this is crazy, this type of thing should not happen at 50,000 miles this is obviously a problem in the engineering or part that are being used.

- Mogadore, OH, USA

problem #4

Dec 012003

Montana 6-cyl

  • Automatic transmission
  • 82,000 miles
My wife and I were on a rural road in northern Michigan when our van stopped running with no prior problems. We ended up walking almost seven miles in bitter cold to get back home. Later on we learned that the dex type coolant had leaked into the engine and caused the cam to fail.

- Ferndale, MI, USA

problem #3

Aug 192003

Montana

  • miles
Dealer replaced lower intake manifold and related sealer. Also, replaced the water pump, and flushed the cooling system. Coolant went into the engine.

- Long Valley, NJ, USA

problem #2

Apr 282003

Montana

  • miles
Intake manifold gaskets failed at 50K, were replaced in January of 2002. Now in April 2003 we have the same problem with the intake manifold gaskets leaking and have antifreeze leak in the water pump as well.

- Hartland, WI, USA

problem #1

Jun 202000

Montana

  • miles
Several days prior to engine overheating experienced electrical affecting the radio -- then engine overheated requiring vehicle to be towed -- two more time that same week after being repaired each time the engine overheated -- on third time mfg. Replaced engine completely. Three weeks after new engine installed the electrical problems with radio reoccurred as well as interior & exterior lights flickering followed a few days later with the "new" engine overheating. In repair shop now for fourth repair.

- Kennesaw, GA, USA

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