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This thread split from...
Thread: Is it OK to skip the 4th gear to 5th for MPG?
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My Firebird came factory with a skip-shift "feature" that would force you to shift from 1st to 4th by locking out 2nd and 3rd. It was deleted before I got the car though. https://skipshifteliminator.com/p/wh...one%20normally. The more you know....
Shift blocking or “skip shift” is a feature of six-speed manual transmissions added to improve fuel economy ratings in the Corporate Average Fuel Economy (CAFE) system by preventing a driver from switching from first gear to second or third as would be done normally. A solenoid prevents the shifter from engaging these gears, forcing the driver to shift from first to fourth gear. The solenoid is computer controlled, and will deactivate if the throttle is opened wide enough, or the car reaches speeds above those typical in city driving.