BAD BRAKE LIGHT SWITCH AT TOP OF BRAKE PEDAL
Check your brake lights and see if they are working. Ford has it so if your brake lights are out you can not shift out of park.
The parking brake on the C5 Vetts are a weak spot in the car. I hope you are at least using the parking brake when parking on a steep grade!
If you are referring to the brake lights it is probably a bad brake light switch. Your vehicle may also have daytime running lights which would be on without the parking lights.
Low beams are burned out.
When parked.
I have run into the same thing with this kind of car. On the steering column at the top they have a switch that will turn the running lights on or turn them off. check the switch you may have hit it and turn it on.
The lights are automatic for your daytime running lights AND your regular head lights. There is a light sensor on your dash that knows when it get dark. When it's dark your headlights will automatically come on, daytime lights turn off and your dashboard lights will dim as a result, since you no longer need them to be that bright when it's dark. As far as the parking brake, it triggers your daytime lights to turn off, so when you disengage your parking brake, they will turn on for normal driving. All of this is a good thing because you never have to worry about turning your on/off...ever.
Check the switch on the brake pedal
you have bad contact in ground cable of the brake lights You might also like to check that there has not been a bulb replacement lately that uses a single contact in a double contact socket. This would have the effect of shorting the brake and tail light inputs and thus turn on ALL lights when brakes are applied or the parking lights turned on.
brake switch ???
I can't turn the yellow brake or parking lights on my 1998 Chevy blazer off and it's draining my battery.Could you please tell me which fuse or switch I'd use to disable the front yellow lights? This is happening even with the car off.