You definitely should be able to negotiate the closing costs a bit with Chase - not alot but you can probably get them to cut a couple of hundred off - for instance if they charge an application fee you can ask teh loan officer that you are dealing with to waive it since you are already a customer... the LO's hav acertain amount of dicretion on some of these "junk fees' -
take a look at the Wells Fargo, Bank of America and Citimortgage websites too and compare their costs to the Chase costs - simply mentioning that you are shopping around and throwing a few of those figures out can often get you a better deal with your current Lender