1999 Pontiac Montana Engine cooling Problems
- Complaints
- 99about this part
- Share
- 42%of 235 total for the year
- Median mileage
- 60,570miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 99 complaints about the engine cooling of the 1999 Pontiac Montana, 42% of the 235 complaints for this model year. Where a mileage was given, the median is 60,570 miles. 1 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Two separate gasket problems on my 1999 Pontiac Montana mini van. The most recent was today in aug. Of 2008 the local garage told me that my vans lower intake manifold gasket needed replaced for about $700. The problem was noticed when my temperature light came on and after filling radiator I saw water leaking underneath vehicle.”
NHTSA complaint #10237492, filed 2008-08, 81,718 miles“Vehicle spontaneously caught fire while stuck in snow drift. Fire was all consuming - fire truck had to come out it out - just shell of van was left. We were able to get out as fire was slow to take off. Fire started in engine compartment. Fire chief said we would never know cause as no engine compartment remains.”
NHTSA complaint #10252473, filed 2008-12, 113,000 miles“First of all the drivers door panel inside comes off and gets stuck making it very hard to open the door. August 2005 I had to replace the head gaskets due to leaking antifreeze into the engine. March 2006 I have to do the same thing again. The technician said these vans are known for this . I guess that's what I get for buying america>>>??”
NHTSA complaint #10155842, filed 2006-04, 68,000 miles“Leaking lower intake manifold gasket. Hard to say how much to date has been internal, but has never dripped on garage floor until this week. I list milage failure at 38,000 miles because that is when I first noticed coolant level dropping with no visable leaks. Current mileage is aprox 60800 miles. I have had to add coolant since june of 2001. 3.4l v6”
NHTSA complaint #10069940, filed 2004-01, 38,000 miles“I took my 1999 Pontiac Montana in for an oil change and was told that I have an intake manifold gasket that is leaking. I was told that if it was not repaired serious engine damage could result. I have 63,000 miles on the vehicle and believe that this is not normal wear and tear but rather a factory assembly defect or poor design.”
NHTSA complaint #10032682, filed 2003-08, 61,139 milesRelated service bulletins
- 10246631Sep 1, 2013Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2006 | 2 | 5% |
| 2005 | 3 | 4% |
| 2004 | 3 | 8% |
| 2003 | 10 | 12% |
| 2002 | 24 | 19% |
| 2001 | 36 | 23% |
| 2000 | 69 | 30% |
| 1999 | 99 | 42% |
| 1998 | 13 | 27% |
| 1997 | 8 | 44% |
Other parts of the 1999 Pontiac Montana
32 complaintsTransmission and drivetrain
32 complaintsBrakes
24 complaintsBody and structure
22 complaintsElectrical system
14 complaintsLatches, locks and linkages
12 complaintsVisibility (wipers, defrost, mirrors)
12 complaintsEquipment
10 complaintsFuel system
10 complaintsExterior lighting
8 complaintsSeat belts
8 complaintsOther or unknown
6 complaints
← All problems reported for the 1999 Pontiac Montana
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology