One problem related to gasoline engine has been reported for the 2003 Chevrolet Suburban. The most recently reported issues are listed below.
At start-up, usually when engine has been run/warmed, a "clicking" (as if the oil level was low/lifters) sound is heard for 30-plus seconds. My concern is the long-range (I. E. , out of warranty) effects this condition will have on the life of the engine. The concern has been expressed to service reps at ancira Chevrolet, who, at 3-4 occasions, replied that it is "normal. ".