Abstract: A fixture for testing efforts is described. The fixture may include a carriage, a platform mounted on the carriage, and a plurality of receiving members located at testing module positions around or in the platform. The platform is configured to receive one or more vehicle seats to be efforts tested. The fixture may further include a tumble return assembly, a lever test module, a headrest button test assembly, a slide assembly, a strap pull assembly, an anti-tilt tooling assembly, a calibration module, a seat back lift assembly, a headrest lift assembly, a weight box, and a tumble stop.