Shift linkage diagram - 2006 Cadillac XLR

Best thing go to www.reliable-store.com they have got books on every vehicle and also how to service/repair it,

service/repair/owner's/maintenance manual with
parts info, fuse box, gear box, PCV, torque specs,coiling, wiring diagrams, electrical diagrams, fuse diagrams, error codes, etc everything
Worth it

On that van, like many other GM front-wheel-drive vehicles, the shift cable goes through a bracket on the transmission to the linkage( the little metal arm). Where the cable connects to the linkage, there is a ball stud. It takes quite a bit of force to disconnect the cable from that. If it became disconnected at that ball without any other outside influence, the shift cable may need to be replaced. You can try pushing the plastic end of the shift cable back on to that ball stud ,it should click into place.
If the ball stud became disconnected from the linkage(little metal arm), the linkage would need to be replaced.
There should be a locknut holding the linkage to the transmission stud right above the range selector switch. If it came loose of there, you may need a new linkage, and to replace that nut

Your linkage has come undone,climb under and reset.

Try looking on the Autozone web site for the info, or buy the repair manual.

I had the same problem on my 05 HUMMER. I got under truck and saw that the linkage bushing on shifter cable had come off the shifter. i put it back and was able to shift gears again. I moved the truck and it came off again. I had to get a eight dollare part from Advane Auto parts to fix problem

start at the throttle linkage and disconnect there follow routing of old cable and place new one in same was old cable and finish at the transmission, suggest a chilton or hayes repair manual with diagrams and step directions, and helps with future repairs, auto stores around $30

Shifter diagram

Look under the car the linkage on the trans may have come off.

Go to http://www.hmaservice.com/ and register the vehicle (By VIN). Afterward you'lll have access to manuals, wiring diagrams, service bulletins, etc.
Good Luck.

If your pan is dented or crushed your selector paw in the trans has nowhere to go, this is super easy to fix - dont try to fix the pan, you can get a new one for cheap - or a used one if the salvage yard has not crushed everything with that trans, go to the parts store and get a new one maybe $20-30, it is very straight forward - make sure you get a new gasket ((or)) what I do is use permatex rtv black and put a nice even bead around the pan - smooth it out with your finger to about 1/16" thick and let it set up for about 1/2 an hour or till a little tacky put all your bolts in finger tight and retorque aroun the pan every other bolt until they are all tight (check torque specs and definatly use a torque wrench) and might as well change the filter since you are there (very easy) use hurst hot shift fluid or B&M trick shift for replacement fluid