5-year investigation, easy solution: Get a car wash

The National Highway Traffic Safety Administration is closing a 5-year investigation into rusting pipes in about 5 million older Chevrolet, Cadillac and GMC pickups and SUVs. The solution is a familiar one for Minnesota drivers: Get a car wash several times during the winter.

Safety regulators said there's no need for a recall -- the rust is caused by road salt.

The NHTSA is now urging people in 20 cold weather states to get their vehicle's undercarriages washed several times during and after the winter

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