1999 Pontiac Montana Engine and Engine Cooling Problems
Owners have filed 99 complaints with NHTSA about engine and engine cooling problems on the 1999 Pontiac Montana, 42% of all complaints for this model year. Half of the reports with a mileage happened before 60,570 miles. The words owners use most often: “intake manifold” (39% of reports).
- 99engine and engine cooling complaints
- 60,570median miles at failure
- 0mention a crash
- 0mention an injury
- 0related recalls
- $1,650typical repair cost reported by owners
- 47%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Intake manifold: mentioned in 39 of 99 complaints (39%)
- Low coolant: mentioned in 11 of 99 complaints (11%)
- Water pump: mentioned in 9 of 99 complaints (9%)
- Gasket leaking: mentioned in 7 of 99 complaints (7%)
How much does it cost to fix?
Owners who wrote down what they paid or were quoted put the typical engine and engine cooling repair on the 1999 Pontiac Montana at $1,650, and half of them between $1,250 and $3,650.
Based on 23 NHTSA complaints about this problem alone that state a repair bill or quote (2003–2008), converted to 2026 dollars with the U.S. consumer price index. These are owners' own figures, not a quote: they include dealer quotes, and owners who file complaints often faced larger repairs, so they can run higher than typical shop prices. Prices vary by shop, region and warranty coverage. How we calculate this.
At what mileage do engine and engine cooling problems happen?
Based on 66 complaints that reported the odometer reading.
How serious are the reports?
Of 99 complaints, 1 a fire.
Pontiac Montana engine and engine cooling complaints by model year
| Model year | Engine and Engine Cooling complaints | Share of that year | Median miles |
|---|---|---|---|
| 2006 Montana | 2 | 5% | 50,630 |
| 2005 Montana | 3 | 4% | 28,000 |
| 2004 Montana | 3 | 8% | 60,200 |
| 2003 Montana | 10 | 12% | 73,000 |
| 2002 Montana | 24 | 19% | 55,000 |
| 2001 Montana | 36 | 23% | 66,000 |
| 2000 Montana | 69 | 30% | 58,000 |
| 1999 Montana | 99 | 42% | 60,570 |
| 1998 Montana | 13 | 27% | 74,905 |
| 1997 Montana | 8 | 44% | 55,000 |
When owners reported it
Related recalls (0)
No safety recall lists engine and engine cooling for the 1999 Pontiac Montana. A pattern of complaints does not always lead to a recall.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
It seems that the this particular make and model has known problems with the cooling system. On a family trip to virginia the car started to overheat and i stopped the vehicle. When parked red fluid was visible under the car and upon testing was found out to be coolant leak. Car was towed to pa and…
1. Events unknown 2. Cooling system failure, all the time, undriveable 3. Unable to correct failure. *tr
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…

Frequently asked questions
Do all 1999 Pontiac Montanas have engine and engine cooling problems?
No. NHTSA has 99 owner complaints about engine and engine cooling for the 1999 Pontiac Montana (42% of the 235 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the 1999 Pontiac Montana engine and engine cooling?
No recall currently lists engine and engine cooling for this vehicle.
At what mileage do engine and engine cooling problems start?
The median reported mileage is 60,570 miles: half of the reports with a mileage came before that.
How much does it cost to fix engine and engine cooling problems on the 1999 Pontiac Montana?
Owners report a typical cost of $1,650 (half paid between $1,250 and $3,650), from 23 complaints that state a repair bill or quote, in 2026 dollars.
What do owners say about engine and engine cooling problems on the 1999 Pontiac Montana?
The most frequent phrase is “intake manifold”, in 39 of 99 complaints, followed by “low coolant” (11).
See all 1999 Pontiac Montana problems or engine and engine cooling problems across all Montana years.