1999 Pontiac Bonneville Engine and Engine Cooling Problems
Owners have filed 59 complaints with NHTSA about engine and engine cooling problems on the 1999 Pontiac Bonneville, 41% of all complaints for this model year. Half of the reports with a mileage happened before 64,008 miles. The words owners use most often: “intake manifold” (15% of reports).
- 59engine and engine cooling complaints
- 64,008median miles at failure
- 1mention a crash
- 0mention an injury
- 0related recalls
- $1,850typical repair cost reported by owners
- 31%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 9 of 59 complaints (15%)
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 Bonneville at $1,850, and half of them between $1,500 and $3,350.
Based on 6 NHTSA complaints about this problem alone that state a repair bill or quote (2003–2005), 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 29 complaints that reported the odometer reading.
How serious are the reports?
Of 59 complaints, 1 mention a crash, 5 a fire.
Pontiac Bonneville engine and engine cooling complaints by model year
| Model year | Engine and Engine Cooling complaints | Share of that year | Median miles |
|---|---|---|---|
| 2005 Bonneville | 1 | 4% | 63,635 |
| 2004 Bonneville | 2 | 7% | 22,000 |
| 2003 Bonneville | 6 | 11% | 82,500 |
| 2002 Bonneville | 10 | 11% | 62,800 |
| 2001 Bonneville | 22 | 17% | 93,767 |
| 2000 Bonneville | 37 | 17% | 63,500 |
| 1999 Bonneville | 59 | 41% | 64,008 |
| 1998 Bonneville | 194 | 70% | 70,741 |
| 1997 Bonneville | 50 | 34% | 98,000 |
| 1996 Bonneville | 43 | 29% | 105,000 |
| 1995 Bonneville | 55 | 23% | 109,644 |
When owners reported it
Related recalls (0)
No safety recall lists engine and engine cooling for the 1999 Pontiac Bonneville. 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.
Tl*the contact owns a 1999 pontiac bonneville. In 2003, while driving 15 mph, the contact noticed a huge cloud of white smoke at the rear of the vehicle. The dealer stated that the intake manifold had blown the gasket. The intake manifold gasket was replaced as well as the intake manifold itself…
Plastic engine intake plenum assy meltdown causing coolant into cylinders of engine. Original incident identified to possible damage to 1st cylinder. Plenum assy replaced with metal sleeve which mechanic claimed was superior to original mfg part. Prior damage to 1st and 2nd cylinders became…
Dt*: the contact stated the intake manifold gasket fractured a year ago when the car had 40,000 miles. The fracture in the intake manifold constituted a leak and as a result of the leak the engine ran very inefficiently. The manufacturer was contacted 3 times to provide reimbursement for the…
Frequently asked questions
Do all 1999 Pontiac Bonnevilles have engine and engine cooling problems?
No. NHTSA has 59 owner complaints about engine and engine cooling for the 1999 Pontiac Bonneville (41% of the 143 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 Bonneville 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 64,008 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 Bonneville?
Owners report a typical cost of $1,850 (half paid between $1,500 and $3,350), from 6 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 Bonneville?
The most frequent phrase is “intake manifold”, in 9 of 59 complaints.
See all 1999 Pontiac Bonneville problems or engine and engine cooling problems across all Bonneville years.