Check, ACDelco, keyfobprgramming instructions, (for reprograming 2004-2007 XLR transmitter).
I also purchased two factory new units for about $27.00 each. Be careful of the individual vehicle years as some parts are specific to the model year.
I was just abut to program the transmitters, as the process seems easy as long as you follow the instructions carefully. Good luck. Now if I can only find decent mechanic to find the problem with a sluggish top. The present/ last dealer whacked me for over $1,600.00 to rebuild/ replace the two main lift cylinders, also suggesting one hydraulic hose "may" be leaking.
Nothing changed except the balance in my checking account. with the dealer now saying two or more hoses seem to be leaking; and- and- and you must order 4 hoses, (a kit) costing in excess of $700.00 and he goes on attempting to dazzle me with bullshit remarking if the there is a problem with "relearn"- then I will need to replace switches.
Anyone of you who is not independently rich, living near central MA - let me know about a decent repair facility ,,, Thanks !