im having trouble keeping this Caddi running. i drive for a half hour wit no problems, then the car will just kill while driving and have to wait a hour or so to crank it again. i was instructed on how to run a test that would give me codes to pin-point the problem and ive done so. Ive made a list of the codes but no way of checking them. Note... the only thing ive done to this car is change the fuel filter prior to my problem im having wit it now. Please share any suggestions u might have and how to retrieve a list of definitions to the codes displayed on the A/c and heat control. Thank you so much