Well, that depends on what you're trying to shut off, exactly. If you're referring to the trailer supply and tractor protection valves, the knobs are located on the dash, with the actual valves underneath the dash. If you're talking about a hydraulic cut off for a wet line vehicle, it's usually at the outlet of the hydraulic tank, but if not, it'll be located somewhere between the hydraulic tank outlet and the connecting port for the trailer.
An air-intake engine shut-off valve regulates air-flow to the motor, and operates as an emergency shut-off valve. There are also shut-off valves on water hoses, so shut-off valves really control the inflow of any liquid or gas.
No, GM vehicles do not have a fuel shut off/inertia switchNo, GM vehicles do not have a fuel shut off/inertia switch
GM vehicles do not have a fuel shut off/inertia switchGM vehicles do not have a fuel shut off/inertia switch
As long as there are working valves to shut off the hose at the washing machine connection, you do not need to shut off the main. If there are no valves there or they do not work, you must shut off the main before starting and then take advantage of this time to install shutoff valves as well.
outside of the home
Tubs usually do not have shut off valve for them. You have to shut off the main supply. Depending on how the house is plumbed, you may be able to shut the cold supply to the water heater and that will shut off both the hot and cold or the main line where it comes into the house.
It doesn't need a shut off valve. In fact only Ford Motor Company installs fuel shut off valves in their cars.
Plymouth vehicles do not have inertia/shut off switches.
There is no fuel shut-off switch on GM vehicles.
On some vehicles.
GM vehicles do not have a fuel pump shut off switch.
It does not have a fuel shut off, unlike some Ford built vehicles