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NHTSA — Engine And Engine Cooling: Cooling System Problems


definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
36,899 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.

2002 Pontiac Montana cooling system problems

cooling system problem

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2002 Pontiac Montana Owner Comments

problem #6

Apr 022008

Montana 6-cyl

  • 86,393 miles


I also had the problem with the lower intake valve gasket but instead of one time of paying 5-700.00 to have it fixed I have had to have it done twice and my van only has 84,000 miles on it I know that there are always problems but I think that if this many people have had the same problem that they should do something about it.

- Bergholz, OH, USA

problem #5

May 242007

Montana 6-cyl

  • Automatic transmission
  • 70,000 miles
The contact owns a 2002 Pontiac Montana. The contact stated that the head gasket and the intake gasket had corroded from a cooling leak. She also experienced overheating and the only coolant that the dealer is telling her to use is dex cool. The contact stated that this type of coolant has been known to cause failures and that there should be some other type of coolant to use. She stated that the power door on the passenger side has signs of corrosion, the fuel gauge is erratic and prevents her from knowing the amount of fuel in the vehicle, the driver side front tire hub is loose, the overhead console for the temperature and compass has failed, and the air conditioning has a hole in the hose. According to the manufacturer, since the contact changed her own oil, that is the reason she is experiencing so many failures. Therefore, the manufacturer stated that they are not liable. The VIN is unknown. The current and failure mileages were 70,000.

- Ypsilanti, MI, USA

problem #4

Jan 102004

Montana 6-cyl

  • Automatic transmission
  • 47,000 miles
Lower intake manifold gasket leak. Internal leak allowing coolant to contaminate oil. Also, the rear bearing replaced. The car only has 47,000 miles.

- Rochester Hills, MI, USA

problem #3

Oct 152003

(reported on)


  • miles


Assistance (tis request tis03-007115 dgd closed). Vehicle had urine odor coming through the vent in the interior of the vehicle. The service dept. Stated the coolant went bad and leaked into the ventilation system. They removed the A/C, heat unit, vent and ducts but the smell returned. Consumer returned the vehicle four days later. Consumer was informed that the problem they've experienced is a nationwide defect with that vehicle.

- Unknown, DC, USA

problem #2

Aug 112003

Montana 6-cyl

  • Automatic transmission
  • 18,000 miles
Urine odor coming in through ventilation into the interior of the van. Dealer supposedly fixed it and problem has occurred for the third time. Was told it the coolant is going bad and is leaking into the vents.

- Acworth, GA, USA

problem #1

Sep 292003

(reported on)


  • miles
Coolant is leaking into the ventilation system causing a "urine" smell to enter the passenger cabin. Passengers are coughing and have constant headaches. Dealer will replace the ventilation system.

- Acworth, GA, USA

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