I have an 07 too.. I talked to dealer about it and they said as per GM the range is 50 ft, which i think is kinds lame because i cant start it from my office building as i park at the end of parking lot. There is another post where someone mentioned that remote start worked for them in a building where the car is not in sight and they advised to change the battery .. which I did and first couple of time after that the remote start worked like a charm from far away too.. but then back to same range. I bought 5 batteries from amazon for 3 bucks.. and i think it was free shipping too. I wanted to try the new fob but am not sure how the kep will work with it .. i am sure if we buy it frm dealer they can make the keys but dont want to spend that kind of money just for fobs..
there are actually a few other alternatives to strictly dealer for purchasing key fobs. i havent personally had any expirence with this one, but i do know that the local locksmith for my area can make the computer programmed keys for benz, bmw, licoln and maserati. i cant think why caddy would be off the list. you may want to call around and see if any of the smiths in your area can do it. i know a 400 fob for my bros lincoln cost 230 programmed this way. just my two cents.
Chris Heath (RippyPartsDept) is an ASE Certified GM Parts Consultant at Rippy Automotive
Rippy is a Cadillac, Hummer, Saturn & Saab dealership - family owned and operated in Wilmington, NC since 1946 We offer all forum members discounts on parts and freight - e: firstname.lastname@example.org: 800-RIPPY-22
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The trick to it is you MUST get an STS fob...even though the DTS fobs look the same, they are not the same. Only STS fobs will work. If I remember correctly, you can verify that it is an STS fob by looking for the key release button...the DTS fobs don't have this.