2013 Chevy Sonic LTZ HB 1.4L 80k Miles. started leaking coolant profusely once it warms up. took it to the chevy dealer down the road from where i work, they are saying its a "main radiator hose" which to my knowledge doesnt go behind the engine. they gave me this part number 96958216 it doesnt come up anywhere at o'reillys or autozone. its a GM part number you can find it here OEM GM Parts and Accessories | GMPartsCenter.net and search the part number 96958216. takes you here 96958216 - OEM GM HOSE GMPartsCenter.net no where really gives a very good description or even part NAME and i really dont want to order it. I want to know what i should be asking for when i go into a parts store so i can pick it up and just replace it on my own. i took the number and description the dealer gave me over to o'reilly's and they had no idea what i was talking about, they literally told me good luck. so what i have found is that it may be a Heater Hose? is that going to do me any good when i walk into a parts store?