hunter

Get the battery checked at first, more than likely battery is dead. This type of symptom followed with plenty of warning means battery cranking power has depleted and when you try to crank it sucks remaining battery juices and throw all faults and warning light. If battery is fine then it should start of its own and not with jump start. If after that instance battery was fine, i strongly recommend to get the proper OBD II diagnostic done as soon as you can and see what all faults are recorded and why?

Hi Hamid, This type of situation usually arise if you are not changing the gear oil and filter every 40k kms. No matter what Cadillac says (its for lifetime, as they mean lifetime of gearbox = 100k and not car). If you aren't doing that, then it means gearbox has gone really bad with dirty oil and choked filter which causing this difficulty in changing gear as gearbox is suffocated inside. If you are not sure about gear oil change in the past then this could be the reason as well. In either case as a first response, immediately get the gear oil and filter changed as soon as possible and drive for few 100's km and if still this gear changing thud is there, then show the car to agency or some expert gear rebuilding mechanic who can diagnose the problem further and advise if it can be repaired economically or rebuilding the gearbox is the only solution. Don't go for used gearbox, as it might show its age soon. If you rebuilding or changing is the only solution go for rebuild as then you will be sure it will last for long time if you keep changing the gear oil in time. Hope this help. Good luck.

When the car windows stopped working i pulled out the motors and checked which looked good and even the fuse are good. What else do i check now