what is a shrader valve? my blazer has been to garge 3 times for check engine light. code p440. have had new vapor lines, new vent valve, now shrader valve? what is its function?
what is a shrader valve? on 2001 Chevrolet Blazer
That thing you put air in to pump up your tires! Or to check the pressure in your tires! Or to check the pressure of your fuel pump, fuel system has one also. It is just a common name for any valve that has those functions. Found in different shapes and sizes. Now you will have to ask whom ever told you it needs one why.