parking pawl
Is your transmission an automatic, or a manual? I guess in either case, I'd suspect the shifter cable, or it's adjustment. Of course, something inside the transmission may have failed. Take your car to a good mechanic and have the problem diagnosed.
What, exactly, is the problem?
If your car won't shift into reverse, try changing the transmission fluid and filter. Sometimes that will solve the problem. If that doesn't help, there could be a problem with the linkage or the shifter cable. Or, if the car is an automatic, make sure you're stepping on the brake pedal before you try to shift out of park. You may need to have a mechanic inspect the transmission.
i have a 2001 pontiac sunfire antitheft problem will not start anttheft light flashs on dash i can turn motor over buy jump starter but will not start
Have vehicle scanned to determine the problem
the only problem that you can repair yourself would be with the linkage. but if all other gears work except reverse then the problem is probably internal and should be inspected by a professional. it makes a big difference if the trans. is manual or automatic also.
There can be several things that will an automatic transmission not to work properly. The most common cause is a lack of transmission fluid. Broken shifting linkage can also cause the problem.
It depends on what the problem is. From your question it is obvious you need to have it looked at by a professional.
The radio on your 2000 Sunfire is probably reading "loc". If this is the problem, you need to go to a Pontiac dealer and pay them to unlock the radio. This is an anti theft device to insure your radio can not function if it is removed. The cost is from 10 to 20$
Could be a transmission problem, assuming an automatic transmission.
I had a similar problem in a Pontiac Sunfire. The guy at the dealership said it's a common problem with the switches they use for fan control in Chevy/Pontiac vehicles. It's about a $10 part.
That indicates a problem with your automatic transmission.