Keep this in mind...first most people have no idea about how dealers finance..
F&I guys are in the business to make money for the dealership. They may not have a good relationship with Chase but have a good relationship with Wells Fargo or Ally or some of the other banks. There is a chance that dealer gets a better kick back from Wells Fargo than Chase even if the rate is lower. If they are giving you a good price on the trade and a good price on the Jeep they are going to try and make a profit on the financing.
When i go to dealership I always have financing arranged ahead of time. This way I can negotiate the finance rate if they are going to try and shove it down my throat. When I bought my Jeep they actually beet my credit union by .25%..In the grand scheme its not much over the life of the loan but it is something. I went with Ally (via the dealership).
Rule of thumb. Never negotiate everything at the same time. Get the price for the new Jeep...get the price for your trade and always bring a loan calculator with you to the dealership. That way if they tell you a % rate you can confirm it by plugging in the numbers.
2013 Jeep Wrangler Unlimited Sahara
AEV Pintlers, front and rear bumpers, tire carrier
AEV 3.5 RS lift, synergy ball joints
4.56 gears and eaton lockers, Rubicon 4:1 transfercase
Micky Thompson 35" MTZs
JW Speaker 8700Js and 6145s and Recon LED Tail Lights
Trek Armor Seat Covers