Accurate Transmission Inc. offers comprehensive auto repair services that include car care services brakes general services under car services heating & cooling services electrical services transmission services electronic services internal engine services and heavy-duty services. Automatic transmissions shift between gears automatically to optimize driving and changes gears based on the throttle pedal vehicle speed engine speed and vehicle load. Typical automatic transmissions have 4-5 forward gear ratios a reverse park and neutral gear. Shifting gears occur automatically once the car is in drive and there is no need for a clutch pedal or gear shift like there is in a manual transmission.