Hello guys im new to the forum but I really need help my 03 cts had the check engine light and the code was to replace the cramshaft sensor it looked simple i replaced the one that was on the top right of the engine I follow the instructions disconnecting the negative cable from the battery and I was very careful to replace the sensor but after I placed the new one my car wont start at all I tried everything I even placed the old one back one to see if maybe the new one was bad but it still wont start any ideas I really need my car is the only I got if any one new how could I start it atleast to drive it to the dealer thatll be great plz any help?