My 1995 gmc sierra 1500 is making a high pitched noise and it sounds like its coming from the fuel injection system. Any idea of what it is?
The problem might be that there is something on the inside which is loosely connected. In order to find out exactly what is causing the high pitched noise, you should have your car checked out by a mechanic.
Sorry I own dodge -better truck. maybe a vacuum/ intake leak? never heard of a fuel injector whining.