Okay. What do I do now?

Mvander wrote:
My yukon with simillar tt and 5.3 4sp 3.73 always seem to run at 100° above ambient. Never really got much over 200. I dont think gearing will help your temps. A bigger cooler will help for sure.

Thanks. I called my mechanic and he said that adding a bigger cooler in front of the the radiator is not advisable because it can restrict airflow and cause other over heating problems with the AC condenser. I am going to see if there is space to put one somewhere else. I have seen some that come with an electric fan that can go anywhere. I wish there were someone here that had one of these installed to tell me how they work for them.