I have a 2000 Dodge Dakota RC 4.7 Auto at about 60mph its somewhere around 2500-3000rpm. I cant remember exactly right now. I know its no where near 1500rpm that I hear other have. It looks like I have the 3.55 gears according to the glovebox sheet. It has the stock 15 or 16" tires. It seems like it way to high of rpms on the highway. Its not real fast 0-60 so I'm 100% it hasn't had the gears changed. Is there a solenoid that can prevent it going into 4th gear OD or something without it giving any fault codes? It really feels like it want to go into another gear. maybe even two more gears. Also Transmission fluid looks good and is full.