My 2004 Mazda 3 Sedan (GT or GX) has a problem with the transmission. Not entirely sure if itís the transmission or maybe something else like a sensor. Once I start going it seems to have a rough shift from 2nd to 3rd. Once it gets to 3rd and 4th gear only is when the gear number indicator on the dash will flash off. When itís in 4th gear and it flashes off it will downshift to 3rd. Iíve also noticed when the gear number indicator starts doing so if I lightly keep my foot on the gas itíll pop the 4th gear back up and stay on while I very lightly push to keep the car in a acceleration. Donít know if this matters but also another thing my reverse lights will not come on either. Iíve replaced both the bulb and the fuse. If anyone could help itíd be greatly appreciated! First time posting hope I did everything right.