If you're referring to the exterior lights on your van, it's probably the turn signal switch. When I press the brakes, or turn on a turn signal, my rear lights look like a Christmas tree. The brake light wiring has to go through the turn signal switch because of the cruise control, which is why the brake lights are affected by the switch. Mine started with a problem on the right turn signal, and since has completely broken down. Front lights still work fine - it's the back ones that have the problem. When I press the brakes, both my dash indicators for the turn signals light up. I suggest getting a new turn signal combination switch on eBay, as they are around 350 at retail stores.
It would help if you asked a detailed question or described symptoms instead of
being so vague that changing the tire might be the correct answer.
Usually the fuse is going bad.
no, the Chevy Colorado seems to be the only GM Vehical that does not beep when you lock it. Read the owners manual, I have a 2005 that beeps when I lock it. It can be programed to beep and flash the lights, just flash the lights, or just beep.
emergency blinker
Check the ground wire for the rear lights in back underneath where it attaches to the frame/body/bed. It may be broken, corroded or loose.
A flashing check engine light is an indication of a misfire.
bulbs are to small Check the fuses.
It can be connection wires, bulbs or fuses.
You may have a bulb that that brunt a element which than crossed the other element cause all lights to come on a one time. I have seen this before. If this does not light all bulbs when the brakes are applied, then I would be looking in the front lights, if it does I would look in the back lights.
Usually a device is used to cause the lights to flash, which alerts the deaf person.
Why does my heater control lights flash on an off on my 1990 Z71
who can flash 1998 chevy cavailer computer?
perhaps if it was loose or the conductor was cracked.