(FOTO: Archivo/La Opinión)
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"You can't tell people they're getting the greatest car manufactured on the face of the earth and then three months later admit it doesn't steer right," said Megna, who is looking into the possibility of a class-action lawsuit.

GM spokeswoman Geri Lama said the automaker would continue to treat the condition as normal and try to resolve customer complaints on a case-by-case basis.

An internal company bulletin shows that the Chevrolet Avalanche, Tahoe, Suburban and Silverado Classic; GMC Sierra Classic and Yukon; Cadillac Escalade; and Hummer H2 are at risk for the steering lock-ups. The problems affect various model years dating back to 1999.

GM's bulletin says the condition, which stems from a lack of pressure in the power steering system, can be aggravated by worn tires, low tire pressure and tires larger than stock size. For nondiesel engines, GM has told dealers that adding a pressure valve may help fix the problem. Vehicles that run on diesel engines cannot be fixed.

It's impossible to know how many vehicles with the condition are on the road, but Megna, who specializes in representing drivers with defective vehicles, said owners of the affected models have the problem to varying degrees, and most are either putting up with it or trading in their vehicles.

GM acknowledges that customers routinely complain about the issue, and one chat forum on the automotive Web site Edmunds.com is dedicated to complaints about it. Attempts to reach other customers for comment were unsuccessful, and Megna said he wasn't aware of any other lawsuits over the issue.

GM officials have testified the condition exists in other companies' vehicles, but GM never offered details in court, and Lama said she had no details on the other vehicles either.