first time posting hoping you pros have a answer for me. have 1 code and cant find it anywhere. F49 can anyone out there tell me what this is? the problem with the car is that it dies after you shift into gear or as you pull away. it dosent do it all the time. runs fantastic otherwise. have major tuned it and replaced the isc. sometimes it takes a minute or two to get it started again and sometimes it starts right away. can anyone help me with this problem. was also told that it may be a crank sensor but i heard this caddy dont have one. thanks car also has only 64K.