Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.

Print this page


pretty bad
Typical Repair Cost:
No data
Average Mileage:
105,394 miles
Total Complaints:
4 complaints

Most Common Solutions:

  1. not sure (4 reports)
2004 Chevrolet Impala engine problems

engine problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2004 Chevrolet Impala:

Unsubscribe any time. We don't sell/share your email.

2004 Chevrolet Impala Owner Comments

problem #4

Apr 112012

Impala 3.4L V6

  • Automatic transmission
  • 135,000 miles


Damn this car! My wife was driving the car around town when it starting shutting off on her at red lights. After a few days it started shutting off while driving it. So I replaced the fuel pump($260) didn't fix the problem replaced the mat sensor($130) not it either. Gonna try replacing the idle air valve sensor, hopefully this works!

- , Tracy, CA, USA

problem #3

May 042013

Impala LS

  • Automatic transmission
  • 98,000 miles

I have a Chevy 2004 Impala LS. The past couple of months the car has been completely shutting off while driving or sitting in traffic. It is scary! I have almost been hit twice due to this issue. I have taken the car to 2 different mechanic shops and both times they were not able to find a problem. The message center is not showing a problem and there are no codes showing when the car is put on a meter. I am in contact with Chevy customer service and I am not getting anywhere. I was told to take my car to a Chevy dealership for diagnostics because their mechanics are better- The dealership they gave me is 2 1/2 hours away. I was also told that I would have the honor of paying for the diagnostics. I told them that in my research, I have noticed numerous complaints regarding the same issues I am having.

- , Port Richey, FL, USA

problem #2

Apr 042012

Impala LS 3.8L

  • Automatic transmission
  • 100,578 miles

car stalled 2 times once while driving in heavy rain and the other after washing down motor i have all electrical componets cover properly 2004 ls impala been thru lots of thunder storms and motor washes also 2007 chevy pickup no promblem maybe its time for her to be hooked up checked so we can find the problem after car stall it cranked back up in seconds might be moisture promblem? are a start of new promblem.................................................................................................................................................spaceghost out..........ponchatoula.louisiana ....crawfish and beer time

- , Ponchatoula, LA, USA

problem #1

Feb 042011

Impala LS 3.8L

  • Automatic transmission
  • 88,000 miles

My 2004 Impala has had only a few minor glitches until recently when the engine began stalling while slowing down. It now happens multiple times per commute. I replaced the fuel filter last affect. I filled the car with 93 octane gas and added fuel injector cleaner to the same affect. After seeing all the complaints about similar problems, it appears I have a challenge ahead of me. Wish me luck!!!

- , Columbia, SC, USA

Not what you are looking for?