Originally Posted by dmclone 
Here is what I used from an older post.
Just thought I'd pass a little info along about getting a deal on XM. My wife just bought a new car that has XM. We also have XM in an 04 Accord. I was going to call and cancel the XM on the Accord so I did a little reasearch before canceling
I called XM
At the prompts I chose "cancel service"
I got to a live rep and told her I wanted to cancel service
I mentioned that I got a letter a while back offering me $77/year (I lied)
She said that they can honor that offer.
I then told her that I wanted to add our new car for $6.99/month
So my total is now $161/year for 2 cars
I was paying $164/year for 1 car
If they ask you the coupon code (they didn't for me) it is ZWINBACK
I did not want to risk using the cancel option, the tossed in a few months for free, and I am guaranteed my $9.99 rate after the merger, so I just signed up.
