
1993 SL1. Have replaced RF lower control arm and ball joint, had brakes checked, 4 new tires all high speed balanced. Only does it once in a while when accelerating onto freeway between 55-60mph; brake below 45 and goes away and does not happen again when speeding up to 70. Talked to Saturn service manager; has never heard of if before. HELP!
Has this happened to anyone else? Any ideas? All help appreciated!!