Finally found Gen 3.5 nothing special and needs a lot of love, so I have to dust off my searching skills. It is 04 Limited, sounds like a diesel, CEL(o2 sensor, thermostat issue and something else with cats), tire light, traction control lights that randomly come on and center diff blinking sometimes. Not sure if it's normal but i try to engage in 4LLc it makes loud speaker noise, wheel and diff lights are flashing and doesn't seem like anything is engaged. 4HLc works fine. So my first priority is to figure out traction control lights and blinking center diff - any help?