What is causing my Blazer to over heat?

Hi - Dave here, contributing to RepairPal and providing expert advice since 2010. What are the circumstances and conditions under which your vehicle overheats? Standing still? On the freeway? Any time? When you did all the work, have you purged the air out of the cooling system? I would say, I have more questions than answers. Seek guidance at a shop near you. I believe there's an air pocket in your cooling system or the cooling fan may not be working. Total guesses, but educated based on the limited knowledge I have here. https://repairpal.com/auto-repair-near-me Click the link to find some shops near you who can help out!