Federal regulators are investigating whether a recall of 136,300 Saturn vehicles with faulty seat recliners is broad enough to include all potentially defective vehicles.
Saturn Corp., a division on General Motors Corp., recalled some 1994-1995 model years in March 1999 because their seat backs can recline or collapse suddenly. The recall was limited to Saturns built in 1994 between Jan. 31 and Aug. 15.
The National Highway Traffic Safety Administration is uncertain about more than 400,000 Saturns from the same model years but built outside those dates.
There have been 328 complaints about the reclining seats in vehicles not included in the recall, including reports of 14 crashes and 10 injuries.