General Motors is adding 231,000 vehicles to a previous recall last August involving 249,000 SUV’s for a short circuit board in the driver’s door that could lead to a fire.

Vehicles included in both recalls are the 2006 Chevrolet Trailblazer EXT and GMC Envoy XL and the 2006-2007 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, Saab 9-7X and Isuzu Ascender.

About 443,00 out of the 480,00 SUV’s worldwide are located in the United States. There have been 58 reports of vehicles catching fire, 11 of which caused injuries.

Government safety investigators said a fire could occur even while the vehicle is not in use. The NHTSA has suggested that owners of recalled vehicles park outside as a precaution.  According to NHTSA the reasoning behind the sudden fires is from a potential fluid leak in the driver’s door module, which may cause deterioration that might result in a short in the circuit board. The short could result in overheating, consequently leading to smoke or even fire.

The recall is expected to begin July 14, 2013. At that time dealers will contact owners in order to check the door’s module. If the module is functioning properly than a protective coating will be applied. If the module is not working properly, it will be replaced.

For the full NHTSA recall, click here.