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It's one of the more curious problems to surface in recent years. When GM announced it's recalling more than 193,652 SUVs from the 2006 and 2007 model years, they said it was because a circuit board in the driver's door could short and cause a fire.

The vehicles involved are the Chevrolet Trailblazer, GMC Envoy, Ruick Rainier, Saab 9-7x and Isuzu Ascender from the 2006 and 2007 model years. The 2006 Chevrolet Trailblazer EXT and GMC Envoy XL are also included.

Most importantly, GM warned owners of these vehicles they should "park the vehicles outside until they're repaired."

GM says the defect is caused when water gets into the driver's side door and corrodes a circuit board. If it shorts out, the power door and window switches may stop working. It could also cause overheating, which can lead to smoke or fire --even when the vehicle is not being driven.

The problem is one that has prompted several recalls by multiple makers over the years: Moisture gets into the driver's door and corrodes the connections and electronics in the module that control power locks and all the power windows.

That can cause a short circuit and overheating, which can lead to an electrical melting smell, smoke from the door or, worst case, a fire. As of last August, GM knew of 28 incidents and no injuries. The documents did not specify the number of complaints or incidents.

NHTSA says you may or may not get a warning when the locks or windows work intermittently or not at all.

GM is notifying owners and dealers will check the module. If it is working OK, GM will put a moisture protection coating on the electronics; if not, GM will replace it.

For more information: call Buick at 1-800-521-7300, Chevy at 1-866-694-6546, GMC at 1-866-996-9463, Isuzu at 1-800-255-6727, and SAAB at 1-855-880-0808.