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.

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definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
43,800 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2003 Chevrolet Impala electrical problems

electrical problem

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2003 Chevrolet Impala Owner Comments

problem #6

Apr 212010


  • miles


2003 Chevy Impala. Passlock stystem thinks the car is being stolen, disabling the ignition for up to 30 minutes at a time. Sometimes leaving you stranded. Also ABS and trac control system failure at 100,00 miles. No more ABS or trac control as parts are over $3,000. Oil spill out of filler neck onto exhaust manifold, and recall only moved spark plug wires, oil problem still exists. Interior dash lights dim to complete darkeness, or super birght at all different times. Issue is the dimmer switch. Piss poor design by GM. They should be banned from selling vehicles until they pull their heads out of their [xxx]. information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Bloomington, IL, USA

problem #5

Apr 102009


  • 99,800 miles
2003 Chevy Impala. "security" warning light on dash, then random wont-start episode. Wait 15 minutes and it starts. No confidence that GM dealerships know what's wrong, or will permanently fix it.

- Livonia, MI, USA

problem #4

Jan 012009


  • miles
There is a safety issue with 2003 Chevy Impala due to it will not start at times due to problems with passlock system. This is especially dangerous as I am a female who at many times is alone at night going to and fro from work and school and must sit in my car until it decides to start. There are several consumer complaints on various websites about this issue, however GM will not address this.

- Kansas City, KS, USA

problem #3

Sep 012008


  • miles


I have a 2003 Chevy Impala and the security light keeps going on when I drive or a few minutes after sometimes it wont start too. Has new fuel pump, filter, complete tune up, everything is up to date on my car but the security light will still come on. I have heard plenty of complains and they all lead down to the " passlock system" so far no one can figure it out. They said the ignitions wire must be soldered directly to the passlock sensor? but I don't really know.

- Compton, CA, USA

problem #2

Feb 112008

Impala 6-cyl

  • Automatic transmission
  • 94,000 miles
The contact owns a 2003 Chevrolet Impala. The contact attempted to start the vehicle, but was unsuccessful. The security light on the instrument panel flashed. The failure occurs approximately during every tenth start attempt. The vehicle has not yet been taken to the dealer. The contact called the manufacturer and was advised to make an appointment with the local dealer. The current and failure mileages were 94,000.

- Fair Lawn, NJ, USA

problem #1

Jul 282007


  • Automatic transmission
  • 69,000 miles
Theft system had to be disabled because car would not start 3 times and had to be towed. Remote car access had to be removed for above reason. Cost over $500 to repair. Faulty theft module.

- Melrose, MA, USA

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