Never. Vehicle must be properly maintained at all times. If lights don't work, have it towed or fix it before driving.
yes
The brake lights and the tail lights are separate circuits. Check the brake light fuse, then check the brake light bulbs, then check the brake light switch.
Check the brake light switch on the brake pedal
The brake lights work without the key on, so you have a problem with your brake light switch.
The 1996 GMC Yukon brake lights work by receiving power from the brake light relay switch. The brake light relay switch is connected to the brake pedal.
Check the brake light fuse. If you have 12 volts at the brake light switch I would suspect the signal light switch is at fault.
brake lights dont work
you need to repair the lights and they will both work and your taillights will work properly
If your parking lights are on and your left brake light doesn't work, the brake may have burnt out. You might also have a wiring problem.
Check the brake light switch on the brake pedal. Might have to replace it.
Above the brake pedal. If your main brake lights dont work but your third center brake light does, then the brake light switch is not the problem. Its is the turn signal switch.
New bulb needed or broken wire