1997 Pontiac Bonneville: common problems

Owners of the 1997 Pontiac Bonneville filed 147 complaints with NHTSA, most often about engine and cooling and electrical system. Details by component below, with sources.

Key figures

Owner complaints: 147
involving a crash: 3

What fails most often

1 Engine and cooling 34% of all complaints
2 Electrical system 19% of all complaints
3 Powertrain 11% of all complaints
4 Steering 10% of all complaints
5 Fuel system 8% of all complaints
6 Service brakes 7% of all complaints
7 Vehicle speed control 6% of all complaints
8 Air bags 3% of all complaints

Circle size and colour show each component’s share of NHTSA complaints. Schematic only, not a drawing of the exact model.

Engine and cooling: 50 complaints (34% of all).
Electrical system: 28 complaints (19% of all).
Powertrain: 16 complaints (11% of all).
Steering: 14 complaints (10% of all).
Fuel system: 12 complaints (8% of all).

Engines and transmissions

US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.

3.8 L · petrol · 6 cylnamed in 1 complaints
3.8 L · petrol · turbo · 6 cylnamed in 1 complaints
automatic, 4-speed

Drive: FWD

Symptoms owners describe

How many of the 147 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).

smoke, burning smell, fire19 · 13%
stalls while driving15 · 10%
steering or power steering problems12 · 8%
unintended acceleration6 · 4%
won't start5 · 3%
loss of power / limp mode5 · 3%
fuel system, fuel smell4 · 3%
knocking, grinding or other noise4 · 3%
warning lights, check engine4 · 3%
brake failure3 · 2%

Components owners complain about

Component	Owner complaints	involving a crash
Engine and cooling	50	0
Electrical system	28	0
Powertrain	16	0
Steering	14	0
Fuel system	12	0
Service brakes	11	0
Vehicle speed control	9	1
Air bags	4	1
Exterior lighting	3	0
Seat belts	3	0
Seats	3	1
Visibility	3	0
Wheels	3	0
Equipment	2	0

What owners report

Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.

Consumer's vehicle was rearended by another vehicle that was traveling about 45 mph . At impact, driver's and passenger's seatbacks fell back, causing injuires. Vehicle was a total loss.
Seats · crash · 2000-05-22 · NHTSA complaint #862254
Both air bags failed to deploy during collision due to defective sensor. Yh
Air bags · crash · 1999-09-30 · NHTSA complaint #608886
While driving at 70 m.p.h. On an interstate highway, cruise control was disengaged using brake pedal followed by total electrical failure. Light rain was present and car began to spin moving to the side of the road uncontrolled, rolled at least once and flipped end over end. Driver was 7 mos.
Vehicle speed control · crash · 1999-09-17 · NHTSA complaint #711476
Has happened on the freeway surface streets, turning, accelerating, even when braking.there have been times when it wouldn't start and no documentation or invoices available at this time. We have to tug on ignition wires. Possible reason-ignition switch under the steering wheel section is bad.
Electrical system · 2015-12-11 · NHTSA complaint #10809667
It would just quit and I would have no brakes or steering and all gauges would shut down. Sometimes it would lose power and then it would come back on while I was still driving cutting in and out repeatedly. It happened a lot when I was idling at a corner and then would start through the intersection.
Steering · 2014-04-01 · NHTSA complaint #10576488
While driving approximately 35 mph, the vehicle stalled. The failure recurred intermittently. The vehicle was taken to an independent mechanic for diagnostics where the mechanic was unable to diagnose the failure. The mechanic replaced the battery and check oil sensors. The failure continued after the repair.
Engine and cooling · 2012-03-02 · NHTSA complaint #10450042
Smoke poured from under the hood almost instantly. The smoke rapidly intensified and changed color. Fire could then be seen beneath the engine & engulfed a major part of it within 2-3 minutes. Although the fire dept arrived less than 4 min after the fire started, the entire engine was destroyed.
Fuel system · 2010-01-04 · NHTSA complaint #10298048
While I was driving down a highway in michigan, the engine compartment suddenly caught on fire. I was not speeding, and my car was perfectly serviced and maintained. By the time the fire service got there, the whole car burnt down. It took less than 20 minutes for the whole car to get burnt beyond recognition.
Engine and cooling · 2009-11-14 · NHTSA complaint #10292155

When owners complained

NHTSA complaints by filing year. The peak shows at what age the problems show up most.

19978
199818
199914
200029
200112
200223
200312
200413
20055
20064
20071
20082
20093
20101
20121
20141
20151

Comparison

By complaint count this model year ranks 2,681 of 36,656 model years in the NHTSA data (top 7% most complained about).

On average one model year of the Bonneville has 71 complaints (28 years in the data). This year has 147, above average.

What to check before buying

Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
Steering. Steering play, power assist, rack and tie rods after a wheel impact.

Questions and answers

What are the most common problems with the 1997 Pontiac Bonneville?

Owner complaints to NHTSA most often mention: engine and cooling, electrical system, powertrain. Total complaints: 147. The most frequent symptoms in complaint texts: smoke, burning smell, fire (13%), stalls while driving (10%), steering or power steering problems (8%).

How many service bulletins (TSB) were issued for the 1997 Pontiac Bonneville?

NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.

Should I buy a 1997 Pontiac Bonneville from a US auction?

Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.

Other 1997 models

Read also

Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.