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.


really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
0 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.

2004 Kia Sedona transmission problems

transmission problem

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2004 Kia Sedona Owner Comments

problem #1

Jun 132005

Sedona 4-cyl

  • Automatic transmission
  • miles


Took vehicle to dealer at least 15 times, they said not kicking up any era codes. The throttle body was changed also transmission control module (tcm ) was then changed. This did not fix the problem. They did something with the grounds. In February 2005 they put in a new transmission. Like the car it was losing power, and car was gearing down on its own. At first this only happened once or twice a week, but currently it happened every time consumer got into the car. The last this happened consumer pulled out onto a road and car had no power, and did not want to accelerate. It was almost hit by a tractor trailer. Drove to dealership did not turn off the car. Technician drove the car, and he said that the transmission kicked itself into safe mode, which meant the car stayed in second gear while driving.

- White, GA, USA

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