2005 Chevrolet Express 3500 Q&A

2005 Chevrolet Express 3500 Question: My 2005 Chevy express 3500, I changed the heater core because it was leaking, no

My 2005 Chevy express 3500, I changed the heater core because it was leaking, now I have no heat. Did I do something wrong? -
Answer 1
Did you have heat before? If so,check for : kinked hose, hoses switched, did not remove packaging plug before installing core, not full of coolant or air in system. -