2000 Pontiac Sunfire Problems

What owners report

Owners of this model year most often describe the engine shutting off while driving, sometimes at highway speed, along with repeated fuel pump and cold-start trouble. A second cluster of complaints covers headlights and daytime running lights that stop working, brake pedal or brake line problems, and electrical faults ranging from a dead instrument panel to melted ignition switch parts. Reports arrive from very low mileage up to well past 100,000 miles, and many owners describe repeat visits to the dealer without a lasting fix.

1. 1
   Engine cooling

   Engine stalls or shuts off while driving

   • 32 complaints (33%)
   • median 62,500 mi at 3.8 yrs old (8 state mileage, few)
   • 3 mention a crash, fire or injury
   • filed 2000–2007

   Owners describe the engine cutting out without warning at speeds from 40 to 70 mph, sometimes leaving them without power steering, and several say it restarted after a delay or had to be towed. Complaints mention that dealers replaced batteries and alternators, could not reproduce the fault, or found nothing on a diagnostic scan. In some cases a coolant or temperature warning appeared shortly before the stall, and others reported coolant leaking and overheat warnings with no cause found. Reported from near-new to roughly 98,000 miles, with many entries in the 35,000 to 90,000 mile range and several during highway driving.

   3 related service bulletins

   What to check: Ask whether the vehicle has a history of stalling or no-start repairs and have a shop scan for stored misfire or fuel codes. Check coolant level and look for leaks or low-coolant warnings before and after a test drive.

   2 excerpts from owner complaints in NHTSA records

   “I own a 2000 Pontiac Sunfire and the car shuts off while driving at 60-65 MPH. Car has been taken to the Pontiac dealer, they have not been able to find anything wrong with the vehicle, also left the vehicle with another mechanic who drove the car for a couple of days but it did not shut off. I am concerned because I was driving on the highway in the fast lane and the car just decelerated and stopped.”

   NHTSA complaint #10010244, filed 2003-03, 65 miles

   “I have a problem and I dont know where to go for answers on my car. I have a 2000 Pontiac Sunfire...we have had no problems at all with it till I took it in last week for inspection. They told me it needed, brakes and rotors and 2 new tires.......then the day I got it, it left me stranded along the road, the temp gauge kept going passed 265 and the check gauges light kept coming on and I had to let the car sit. …”

   NHTSA complaint #10004903, filed 2003-01, 39,000 miles
2. 2
   Brakes

   Brake pedal sinking and leaking brake lines

   • 13 complaints (14%)
   • median 37,000 mi at 5.0 yrs old (5 state mileage, few)
   • 1 mention a crash, fire or injury
   • filed 2000–2020

   Owners describe the brake pedal going to the floor, sometimes repeatedly, with the dealer unable to reproduce the problem; in one case a brake line had rubbed through against a transmission mount and had to be remade. Others report leaking brake fluid with loss of braking power, a pulsating or bouncing pedal, and brake fluid leaks near the rear lines. Some complaints tie the brake concerns to an earlier collision where the pedal had already felt wrong. Reported from the first months of ownership up to about 55,000 miles, with many entries at low mileage and shortly after purchase.

   What to check: Have the brake fluid level and the condition of the hard lines checked, especially the lines routed near the transmission. Ask whether any brake lines, the ABS unit or the master cylinder have been replaced, and test the pedal for firmness and pulsation.

   2 excerpts from owner complaints in NHTSA records

   “Last year I took my 2000 Pontiac Sunfire to the dealer due to it's leaking break fluid and loss of breaking power. The dealer replaced the break line going to the right rear brake. I was told that the crack in the line was due to oil's and other fluids from driving on the road caused it to corrode and brake. I was charged approx. $250.00 for them to replace it. They said it was not covered under the 30,000 mile warranty. …”

   NHTSA complaint #10098036, filed 2004-10, 35,000 miles

   “The brakes have now failed a total of 3 times, 7 days after I has purchased the car the brake computer system went out. I have contacted the dealership and they are not concerned at all. I have complained to the dealership I have taken it to for all the repairs and they tell me they do not find anything and all the documentation I have will not due until it is proven by someone else they have to play by GM rules I was also told. I do not feel safe in this car and as a women feel very frustrated as to waht to do next. Can you help?”

   NHTSA complaint #722285, filed 2000-05
3. 3
   Fuel system

   Fuel pump and fuel delivery problems

   • 11 complaints (11%)
   • median 58,000 mi at 3.9 yrs old (8 state mileage, few)
   • filed 2001–2020

   Owners describe the car losing power and stalling on the expressway in cold weather, then failing to restart until towed, with the dealer replacing the fuel pump and related parts. Several report the replacement pump failed again under the same conditions, and some mention a clogged fuel strainer, erratic fuel gauge readings, or hesitation and refusal to accelerate. Complaints also describe fuel leaking from the tank around the seals. Most often between roughly 35,000 and 86,000 miles, with several reports tied to cold weather and expressway speeds.

   2 related service bulletins

   What to check: Ask for receipts showing whether the fuel pump, filter and strainer have been replaced and at what mileage. Look for fuel smells or wet spots around the tank and have fuel pressure checked during a test drive.

   2 excerpts from owner complaints in NHTSA records

   “My car was driving perfect until 3 weeks ago, it has since then wont start back up. Thought it was something to do with spark, then tried spark plug wires, new battery, checked alternator and fuses, coils all good. Then I was lead to maybe the gas that was in it. Dropped gas tank, put new fuel filter, checked fuel pump, gas lines, it did stay running one time since but was shaking roughly with a flashing check engine light. Will not run anymore since then. Have not been able to drive my vehicle for 3 weeks now and it is my only car.. …”

   NHTSA complaint #11329282, filed 2020-06, 160,000 miles

   “I own a 2000 Pontiac Sunfire - purchased new. I had no problems until 2003 when my car would deccelerate for no reason while driving at any speed, hesitate while driving at any speed, or, after stopping at an intersection, simply would not allow acceleration. This has happened while trying to go through busy intersections. Very scary. One day in 2003 the car would not start, so I had it towed to a mechanic to research this problem. He replaced my fuel pump but the car was out of warranty, so I paid for this repair along with the tow. …”

   NHTSA complaint #10075044, filed 2004-06
4. 4
   Exterior lighting

   Headlights and daytime running lights fail

   • 8 complaints (8%)
   • median 103,000 mi at 12.1 yrs old (4 state mileage, few)
   • filed 2002–2017

   Owners describe the daytime running lights and headlights quitting, with the lights flickering when the car is put in gear or failing to come on at all, and a service light appearing. Some found that pulling the dimmer switch partly back would make the headlights come on, and others report the dash and lighting shutting down entirely while driving. Complaints mention wiring harness replacement, repeated bulb and relay swaps, and repairs that did not last. Mostly reported between about 73,000 and 164,000 miles, with several owners noting the fault returned within a year of repair.

   2 related service bulletins

   What to check: Check that daytime running lights, low beams and high beams all work and that the dash lights up with the key on. Ask whether the headlight wiring harness or DRL relay has been replaced, and test the dimmer switch through its full travel.

   2 excerpts from owner complaints in NHTSA records

   “My car is a 2000 Pontiac Sunfire, and twice within 12 months I have had the same problem with this vehicle. The day time running lights and the bright lights quit working , the 1st time the dealership said it was a bad wire and replaced it, within one year it happened again, but the dealership said that the part was only warranted for 1yr or 12,000 miles of which the vehicle had been driven over the 12,000 miles,therefore I am having to pay again (twice in one year ) for the same problem. This is ridiculous!”

   NHTSA complaint #10133099, filed 2005-08, 73,000 miles

   “Takata recall while driving at night on a county road and switching from low beams to high beams, the headlights went completely dark and did not come back on until switching back to low beams. After inspection, noticed the day runners also were not working. All fuses were plugged in and good. Replacing the relay did not fix the problem described herein.”

   NHTSA complaint #11001900, filed 2017-06, 106,000 miles
5. 5
   Electrical system

   Electrical faults, melted ignition switch and dash fires

   • 10 complaints (10%)
   • median 102,500 mi at 6.6 yrs old (4 state mileage, few)
   • 3 mention a crash, fire or injury
   • filed 2002–2012

   Owners describe smoke or a small fire starting in the steering column or passenger-side floor area and the instrument panel going dark after startup. Others report the ignition switch melting and disabling the car, and one owner says the vehicle had been repaired under an ignition switch recall years earlier. Complaints also mention the dash and all instruments shutting down at once while driving, with repeated repair attempts that did not resolve the fault. Spread from low mileage up to about 150,000 miles, with several reports on vehicles that were well out of warranty.

   Recall 04V036000

   What to check: Ask whether the ignition switch recall campaign 04V036000 was performed and keep the paperwork. Check that the instrument panel and all dash lights work with the key on, and look for any scorching or melted plastic around the ignition switch and under the dash.

   2 excerpts from owner complaints in NHTSA records

   “Son (denny herold) drove car to work and to a friends house, shut off car, went inside, and came back to find his car full of smoke (windows down) smoke rolling from car. Fire department, police called just missed by 15 minutes having his pregnant wife and 2 year old sone in the car with him. Gm notified, green chevrolet notifed, fire department looked at, state farm looked at, GM fire inspector looked at fire started on passenger side of car on floor near console. Car totally destroyed. Fire dept and state farm said electrical. …”

   NHTSA complaint #756931, filed 2002-01

   “The contact owns a 2000 Pontiac Sunfire. The ignition switch has melted,which disabled vehicle operation. The dealer and the manufacturer were contacted. He was referred to the dealer for diagnostic testing. The warranty expired, and there were no recalls that addressed the failure. The failure mileage was 125,000.”

   NHTSA complaint #10296807, filed 2009-12, 125,000 miles

Buying note. These reports concentrate on stalling and fuel delivery, brake line condition, lighting circuits and ignition switch heat, so a prepurchase inspection that covers fuel pressure, brake lines and the lighting and ignition wiring is worth the cost. Records showing recall 04V036000 was completed and any prior fuel pump or brake line work will tell you more than mileage alone.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.