DETROIT — General Motors and Isuzu are recalling more than 258,000 sport-utility vehicles in the U.S. and Canada to fix short circuits in power-window and door-lock switches that can cause fires.

The recall covers the Chevrolet TrailBlazer, GMC Envoy, Buick Rainier, Isuzu Ascender and Saab 97-X SUVs from the 2006 and 2007 model years. The SUVs were sold or registered in 20 U.S. states, Washington, D.C., and Canada, where salt and other chemicals are used to clear roads in the winter.

GM has reports of 28 fires, and it doesn't know of any injuries caused by the problem.

Fluid can get inside the driver's door and cause corrosion in the power-window and door-switch circuit boards, GM said in documents posted on the U.S. National Highway Traffic Safety Administration (NHTSA) website. The corrosion can cause short circuits, knocking out the switches and causing fires.

The recall affects SUVs sold or registered in the following states: Connecticut, Delaware, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia, and Wisconsin.

Dealers will replace the power-window switch for free, according to documents posted Saturday by NHTSA. Owners will get letters telling them when to schedule appointments. GM also will make repairs at no cost to owners living in states not covered by the recall, spokesman Alan Adler said in an email.

NHTSA started investigating the SUVs in February after getting a dozen complaints of fires.

In one complaint filed with NHTSA, from Oct. 29, 2008, a woman reported the alarm sounded while her 2006 TrailBlazer was parked in her driveway. When she looked outside, she saw the SUV in flames. Firefighters put out the blaze and told her it started in the driver's door.

"The fire burned the entire driver's side of the vehicle, a portion of the front passenger seat and the roof," she wrote.

The TrailBlazer was the biggest seller among the SUVs, which helped to make the truck-based SUV popular in the U.S. The SUVs were phased out in 2009 and replaced by more efficient car-based crossovers, such as the Chevrolet Traverse, Buick Enclave and GMC Acadia.

GM manufactured the Ascender for Isuzu, and Saab was part of GM back when the SUVs were built.