Generally, this is a very simple process, however, if you are unsure about any stage or have difficulties removing the existing knob, then check with your manufacturer’s handbook or an experienced mechanic. To replace a gear shift knob, you need to first purchase a replacement shift knob that fits the vehicle you own. If you are unsure check the vehicle specifications and look for the dimensions of the gear shift lever. Compare these to the dimensions of the shift knob that you are considering. Once you have the right shift knob replacement, simply follow these steps. Locate the existing gear shift knob and determine how it is attached to the gearshift. Generally, it is either screwed onto a machined thread in the lever or it is attached with a small screw close to the base of the shift knob. Unscrew the shift knob or remove the small screw at the base. If you are unscrewing the shift knob, then remember to turn it counter clockwise. Install the new shift knob onto the gearshift by either threading it onto the screw or sliding it into place and then tightening the screw at the base. If you have a shift knob that requires an adjuster to make it fit your gearshift, then consult the instructions that came with the new shift knob to ensure that this is placed correctly before you place the new shift knob. If the new shift knob as gear positioning detailing included, then ensure this is properly aligned with your gear positions. Test the fit and positioning carefully before taking your vehicle out onto a public road. This ensures you can fix any issues without putting your self or others at risk of harm.