Action 9 has found General Motors knew its Uplander minivans had problems with doors opening on their own. And the issue could affect several other models besides the Chevrolet Uplander.

Ron Murray owns a 2005 Chevrolet Uplander and says when he watched Action 9's first investigation of the minivan's power doors he felt vindicated.

"That was mine, that was my vehicle," he said.

According to Murray, his right rear power door constantly popped open, sometimes even when it was locked. Action 9 saw it happen.

After pushing the "close" button, the door closed. Then, an alarm sounded and the door opened by itself. Murray says it happens 90 percent of the time.

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VIDEO: Previous Action 9 Uplander Investigation
WEB SITE: National Highway Traffic Safety Administration
GM Phone Numbers: 1-800-222-1020 & 1-800-243-8872

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The Action 9 report also caught a mechanic's attention. He didn’t want to be identified. He said he tried to fix several Uplander minivans at a major rental car agency because doors kept popping open.

"This is something the manufacturer really needs to get into," said the mechanic.

Action 9 found GM bought back an Uplander in June of 2007 after a Better Business Bureau arbitration found malfunctioning power doors created "a major safety hazard" for a Clermont family. That family declined interviews.

Charlene Bickford owns a 2005 Chevy Venture minivan which was redesigned and renamed the Uplander that same year. The power doors are important for her handicapped daughter, but Charlene claims those doors open on their own. Repairs, shown in invoices she kept, failed.

"We're in an unsafe situation at all times driving this vehicle," said Bickford.

Action 9 has uncovered an internal GM service bulletin which reads the 2005 Uplander power doors could malfunction and not fully open. The same bulletin says the problem could also exist in the 2005 models of the Buick Terraza, Pontiac Montana, and Saturn Relay. It blamed a door computer module that could be reprogrammed.

Action 9 has sent a list of minivan owners who contacted us to GM and to the National Highway Traffic Safety Administration. A federal agency spokesman told us he is looking into the issue.

If this problem affects your vehicle, click to contact Action 9.