Most common 1998 Pontiac Bonneville problems
Share of the 277 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Pontiac Bonneville complaints by model year
Best Bonneville years: 2005, 2004, 2003. Years to avoid: 1998, 1995, 2000. Compare all years →
1998 Pontiac Bonneville recalls (1)
Fuel system, gasoline › Delivery
On certain passenger vehicles equipped with 3800 v6 (l36) engines and certain delphi fuel pressure regulators, the regulators have a much higher than usual rate of fuel leaks. A leak can allow fuel to enter the intake manifold through a vacuum line.
Remedy: Dealers will install new fuel pressure regulators with improved diaphragms. The recall will be conducted in phased mailings. Phase 1 began on June 30, 2004, and phase 2 began on September 30, 2004.
NHTSA defect investigations
Federal safety investigators have looked into 2 possible defects involving the 1998 Pontiac Bonneville:
Engine compartment fires
Engine compartment fires
Ea02-030 is closed with gmea02-030 is closed with GM?s actions in 03v-473 and 04v-090 recalling approximately 529,000 my 1998-99 c- and h-body vehicles equipped with defective fuel pressure regulators.these vehicles were equipped with plastic intake manifolds that are unable to contain pressures that occur in some backfire events and defective fuel pressure regulators with leaking diaphragms that can provide a…
What 1998 Pontiac Bonneville owners say
Engine & cooling all 200 →
Tl* the contact owns a 1998 Pontiac Bonneville. The contact stated that while driving 20 MPH, the vehicle overheated. The contact then attempted to park the vehicle however, the vehicle then stalled without warning. The vehicle was taken to a dealer for diagnosis and the contact was informed that the intake manifold was melted and the head gasket was blown. The vehicle was not repaired. The failure and current mileage was 62,000.
The back two cradle mounts on both sides rusted out and mounts pulled through the cradle causing the steering to become loose filling and causing steering to be out of alignment and when hit brakes front would dart one way or the other and lots of noise coming from under vehicle from cradle bouncing when hitting bumps tried the find one in junk yards and all are that way.
Fuel & propulsion system all 36 →
General motors recall program denial of payment for recall item repaired nd paid for at a general motors Pontiac dealership. Second recall notice recieved on my 1998 Pontiac Bonneville, NHTSA id# 04V090000, compontent is the fuel system, gasoline delivery. My 1998 Bonneville was at the dealership many times and over a period of 2 years until the problem was resolved. Rental vehicles, costly not-needed repairs were done in an effort to find the problem, down time, etc. Payment from general motors requested providing all items requested, original receipts, signed forms and the reason given for the denial was that the vechicle identification number was not part of the recall. General motors mailed me the recall forms. My car did have the problem related to the recall.
Consumer heard a loud bang while driving on the highway. He proceeded off the highway, opened the hood of the vehicle, and fire started in the engine compartment, which engulfed into flames. Within seconds consumer called the fire department, who indicated that the fire started near the engine block. The fire occurred due to the defect described in the fuel pressure regulator, recall 04V090000. But after the factory representative inspected the vehicle he claimed that the fire was not caused by the defect. A fire report was filed.
Electrical system all 28 →
About a week prior to incident, I got a whiff of a burning smell, 2 days in a row, short quick scent. Next 4 days, smelled nothing (even drove car 80 miles one way and back). Day of incident, I was traveling about 10 MPH when white smoke came from the heater vent. I increased speed to about 30 MPH to get to a safe spot, and black smoke billowed out of heat vent on top of dashboard, and front of dashboard. Turned corner to get out of traffic, came to a stop and flames shot out of cigarette lighter, and air vent in front of dash. Heater was off, radio was off, and cigarette lighter was not being used. Car fully engulfed in approximately 2-3 minutes. Car totaled.
While driving 30 MPH, the center of the dashboard caught on fire. The driver pulled over and fought the flames with an extinguisher. The cause has yet to be determined. The manufacturer denied that the fire was due to their vehicles components and that the source of the fire was from external sources. An electrical expert believes that the lead from the cigarette light caught on fire. The fuse was blown but that could have happened after the fire. The consumer's cell phone was charging in the cigarette lighter at the time of the fire.
1998 Pontiac Bonneville engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 3.8L 6-cyl | 4-speed automatic | FWD | 17 / 26 / 20 |
| 3.8L 6-cyl turbo supercharged | 4-speed automatic | FWD | 16 / 25 / 19 |
EPA ratings. Class: Large car.
Frequently asked questions
Is the 1998 Pontiac Bonneville a good car?
Based on 277 owner complaints filed with NHTSA, the 1998 Bonneville rates avoid: 2.3× as many complaints as a typical year of the Bonneville at the same age. It is one of the Bonneville years we suggest avoiding. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 1998 Pontiac Bonneville?
The engine & cooling — 200 complaints, 72% of all complaints for this model year, most often about engine › gasoline. Next are the fuel & propulsion system (36) and electrical system (28).
How many recalls does the 1998 Pontiac Bonneville have?
There is 1 recall for the 1998 Pontiac Bonneville, the most recent from February 24, 2004 (delivery). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Pontiac Bonneville?
The best years by complaints, compared at the same age, are 2005, 2004 and 2003. Years to avoid or approach with caution: 1998, 1995 and 2000. See the full Pontiac Bonneville years comparison.
At what mileage do 1998 Pontiac Bonneville problems happen?
The median mileage reported in complaints is about 72,000 miles; 15% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.