GM Repair Problems? Ask GM Repair Expert Now.
Hello my name is***** am an ASE Master Technician and I am glad to help you with your question.
Its the shift control cable it needs to be replaced. The part number is ***** I can send you the procedure for replacing it from the service manual if you would like. There is also an adjustment procedure for the cable.
The cable is for not being able to shift into park, if you cannot shift out of park then you need to replace the shift lock solenoid.
Try disconnecting the shift cable from the shift lever and see if you can manually shift out of park.
You may have to remove the gear shift lever assembly and take apart to find the problem. Disassemble and inspect. You may need to replace the shift lever assembly.