2002 Pontiac Bonneville Engine cooling Problems
- Complaints
- 10about this part
- Share
- 11%of 89 total for the year
- Median mileage
- 62,800miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 10 complaints about the engine cooling of the 2002 Pontiac Bonneville, 11% of the 89 complaints for this model year. Where a mileage was given, the median is 62,800 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“While traveling on the interstate highway 295 in nj my vehicle stalled. The stalled and almost caused a near fatal accident with a semi. The vehicle after 20 minutes and numerous attempts the vehicle started back up and I decided to try and make it home by taking back roads away from the interstate. The vehicle stalled 4 more times before I could get it home. I was visibly shaken upset and scared out of my mind.”
NHTSA complaint #10607729, filed 2014-07, 145,000 miles“The consumer lost steering control while driving at 45 MPH. The consumer was able to bring the vehicle under control without being involved in a vehicle crash. The vehicle was towed to the dealer, who informed the consumer that the high pressure hose for the power steering assist erupted. The consumer was concerned since a similar incident occurred before. …”
NHTSA complaint #10103751, filed 2005-01, 18,500 miles“3/13/2007 coolant leak in lower and upper gaskets at 65,600 miles. Required removal and replacement of lower and upper gaskets and upper intake manifold. Evidently a GM problem with gaskets. $700 repair on car that has been well taken care of by original owner and only driver of vehicle.”
NHTSA complaint #10200415, filed 2007-08, 65,600 miles“- the contact states that the engine coolant is leaking at the upper intake manifold. The contact states that there was a safety campaign regarding the same issue he has with his vehicle and that he wasn't aware about the issue until he was doing research online. By the time the contact found out about the safety campaign the time for the campaign had expired. The contact is concerned because when he took it to the dealership and they stated that the problem with his vehicle is a common problem that has been happening with various 2002 Pontiac Bonneville.”
NHTSA complaint #10176733, filed 2006-12, 60,000 miles“I received a recall repair for my 2002 Pontiac Bonneville-campaign #03034. If I had replaced the upper intake manifold gasket, throttle body nuts, or throttle body gasket before august 8, 2003, I would have been eligible for reimbursement. Since I only had owned the car for 1 year at that time and had not replaced these items, I had a recall repair done on 11-10-03. I mentioned at the time that when I come into my garage, I could smell hot coolant. The shop followed the instructions of the recall repair to replace the throttle body nuts and added something similar to a stop leak . …”
NHTSA complaint #10142329, filed 2005-11Related service bulletins
- 10251890Mar 13, 2024This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank…
- 10250775Feb 22, 2024This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large…
- 10249579Jan 12, 2024This PI bulletin advises the technician on the proper way to install the pistons in an engine.
- 10242262Aug 24, 2023This service bulletin provides graphics, information and guidelines for engine component wear to assist service personnel as a guideline to perform necessary engine repairs and…
- 10236164Apr 24, 2023This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308…
- 10235802Apr 24, 2023This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
- 10234141Mar 23, 2023This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
- 10234110Mar 17, 2023This service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
- 10227056Nov 9, 2022This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large…
- 10222796Sep 14, 2022This service bulletin provides service information on new torque specification and installation procedure for ACDelco Spin-On Oil Filters.
Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2005 | 1 | 4% |
| 2004 | 2 | 7% |
| 2003 | 6 | 11% |
| 2002 | 10 | 11% |
| 2001 | 22 | 17% |
| 2000 | 37 | 17% |
| 1999 | 59 | 41% |
| 1998 | 194 | 70% |
| 1997 | 50 | 34% |
| 1996 | 43 | 29% |
| 1995 | 55 | 23% |
| 1994 | 14 | 16% |
| 1993 | 20 | 14% |
| 1992 | 9 | 8% |
| 1991 | 3 | 14% |
| 1990 | 1 | 3% |
| 1989 | 1 | 4% |
| 1987 | 3 | 16% |
Other parts of the 2002 Pontiac Bonneville
19 complaintsVisibility (wipers, defrost, mirrors)
13 complaintsElectrical system
10 complaintsTransmission and drivetrain
7 complaintsAir bags
6 complaintsFuel system
6 complaintsSuspension
6 complaintsSeats
5 complaintsBody and structure
5 complaintsBrakes
4 complaintsEngine
4 complaintsExterior lighting
3 complaints
← All problems reported for the 2002 Pontiac Bonneville
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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