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  2. Park-to-reverse - Wikipedia

    en.wikipedia.org/wiki/Park-to-reverse

    Yet rather than being in "park', this area is a transitional zone between gears, which is sometimes called "false park". [4] [5] When a vehicle's transmission is in false park, it may appear to the driver that the vehicle is fully locked in "park". However, on vehicles with this defect the transmission is neither in park nor in hydraulic reverse.

  3. Parking pawl - Wikipedia

    en.wikipedia.org/wiki/Parking_pawl

    The parking pawl locks the transmission's output shaft to the transmission casing by engaging a pawl (a pin) that engages in a notched wheel on the shaft, stopping it (and thus the driven wheels) from rotating. The main components of a parking pawl mechanism are the parking gear, parking pawl, actuator rod, cam collar, cam plate, pivot pin, and ...

  4. Hydramatic - Wikipedia

    en.wikipedia.org/wiki/Hydramatic

    The dual range feature allowed the driver to hold the transmission in third gear until the maximum allowable upshift points, for improved performance in traffic or in mountain driving. The new, dual coupling transmission also incorporated a separate park position, falling in line with other automatic transmissions of the day.

  5. Parking brake - Wikipedia

    en.wikipedia.org/wiki/Parking_brake

    In manual transmission vehicles, the parking brake is engaged to help keep the vehicle stationary while parked, especially if parked on an incline. [2] [3]While automatic transmission vehicles have a "Park" gear with a parking pawl that immobilizes the transmission, it is still recommended to use the parking brake, as the pawl in the gearbox could fail due to stress or another vehicle striking ...

  6. Shift-by-wire - Wikipedia

    en.wikipedia.org/wiki/Shift-by-wire

    A park by wire system engages the parking pawl of a transmission using electrical means, without the traditional mechanical system which involves linkages between the gear shifter and the transmission. Park-by-wire can be considered a part of a shift by wire system, as it shifts the transmission into park mode. [1]

  7. Manual transmission - Wikipedia

    en.wikipedia.org/wiki/Manual_transmission

    A manual transmission (MT), also known as manual gearbox, standard transmission (in Canada, the United Kingdom and the United States), or stick shift (in the United States), is a multi-speed motor vehicle transmission system where gear changes require the driver to manually select the gears by operating a gear stick and clutch (which is usually ...

  8. GM 4L60-E transmission - Wikipedia

    en.wikipedia.org/wiki/GM_4L60-E_transmission

    The police package (9C1) B-body cars featured a First Gear Block Out (FGBO) Plate on the transmission housing to prevent drivetrain damage. The shift point for first to second gear is about 43 MPH (69 km/h) while second to third gear shift point is about 83 MPH (134 km/h) assuming a 3.08:1 differential and a 5,500 RPM engine speed limit.

  9. GM Roto Hydramatic transmission - Wikipedia

    en.wikipedia.org/.../GM_Roto_Hydramatic_transmission

    Not only was the transmission shifting to a very much higher range ( 2.93 to 1.56, but it was also simultaneously emptying the fluid coupling and making a mechanical lock-up. The wide gap in the reduction ratio between first and second gears combined with the direct mechanical connection to the engine to create a shift that could be firm enough ...