Two problems related to engine noise have been reported for the 2004 Chevrolet Impala. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Chevrolet Impala based on all problems reported for the 2004 Impala.
Tried to start car, wouldn't turn over even though car had power, no noises or sounds made when trying to turn over even though I had full power to radio winders doors and electric dash board. Had a new starter put in because I thought that was the issue. 2 weeks later security light comes on while driving and stayed on. Tried to turn car on same thing happened have power. But no turn over and security light is still on. Turned off car took out keys and left car alone came back later and car started w/o incident. No security light on. Same issue keeps happening maybe 4 times a month if not more have to wait 10 mins in order for car to start. Issue happens at gas station, home, work, hot and cold weather. Before I figured out 10 min delay had car towed and spent money on repairs that aren't necessary. Noticed one day while I sat in car for 10 mins in summer heat with 3 month daughter, that car makes a sort of computer humming/buzzing sound. After the 10 or so I hear a click or as I call it a shut down sound and then I am able to start car.
All probs with 2004 Impala ss started after 3 months of puchase date. There were less than 3,000 miles on car. 1st incident - while making right turn at 20 mph, car died 1/2 way through turn. The steering wheel locked and ended up going into oncoming traffic. Luckily made it to opposite side of road w/ harm. Car wouldnt start at all. Dealership service dept. Replace crank shaft position sensor. 2nd incident - approx 3 weeks after 1st, I was stopped to drop passenger off, car started to shake and idle was high, 2 seconds later car died. Car restarted this time, driving home about 35mph car died in heavy traffic, steering locked and had to struggle to get car over to side of road. Car would not restart this time. Dealership service dept again replaced the crank shaft position sensor. 3rd incident - got the car back on a Friday afternoon, the car died again while driving by Saturday nite. Dealership service dept looked a little further than crank shaft position sensor this time and repaired loose pin connections in ignition coil module connector. 4th incident - 2 months after all this, cigarette lighter doesnt work, lights dim when power windows put up, dash board sensor that gets off when low fuel light/ low tire pressure light comes ondoes not reset. Car still feels sluggish. Loud scratching noiseoccurs when wheels turned all the way in one direction. Everything fixed b/c of blown fuse. Scraping noise coming from loose clip in tire wheel well. Deealership stated car was running fine and there was no perforamance problems. This has happened over the last 6 months. Car presently has 4500 miles on it. Oh and Chevrolet roadside assistance absolutely horrible. And then to top everything off the dealership makes it seem like all of these problems are caused by the driver, by asking well what gas do you use and how fast do you drive on the highway. This car is an Impala ss. The car is supposed to be built for performance.