Transcript for Used Car Alert: Texas Flood Cars Flooding Used Car Lots
We're back now with "Gma" on the lookout. A new alert this morning before you head to the used car lot. Some of those shiny new cars could be hiding serious damage. Gio Benitez is at a salvage yard in Mt. Vernon, New York. Good morning. Reporter: Good morning. All of those flooded cars we have seen over the past couple of weeks. They're supposed to be ending up right here. At a junk yard just like this. This morning, gnaw warning for you. They're not ending up here. They're going straight to used car lots. And they're for sale. The rainfall here in Texas, not a laughing matter. Drenching rains and flash flooding. Reporter: Dangerous floosh floods turning Texas and Oklahoma into disaster Zones. Leaving thousands of cars submerge per submerged. I have another vehicle stranded. Reporter: These damaged cars could start flooding the car lots. They'll make their way on to the market. Starting rite now. Reporter: And they can be hard to spot. After a five-hour makeover, this sandy, flood-damaged car looks shiny and new. But experts say don't be fooled. It might look great. But it's rot on the inside. The electrical systems can be compromised. The men cchanical components are ruined. Reporter: Bob worked with customers trying to trade their cleaned up flood-damaged cars. That information will decrease the value of their vehicle. Reporter: This isn't only happening in flood Zones. They can be moved to other areas of the country. A few miles or a few hundred miles away from the area that were flooded and sold to unsuspected consumers. Reporter: What should you look for? Do both the vehicle history reports, such as a carfax and have your car inspected beforehand. And back out here live. We have another tip for you. Look for rust or corrosion underneath the car. Look for those nuts and bolts. If you find out it's a flood car, it's a piece of junk. Lara? Excellent timing and good advice, gio. We thank you. That was a drone, right? And a big car that fell behind him. A Hollywood production. A lot of choreography going on. So much more coming on "Gma."
This transcript has been automatically generated and may not be 100% accurate.