GM 3.1L Index of Articles

GM calls the EGR valve on the 1990-1994 3.1L V6 engine a digital EGR valve (yup, purty fancy name if you ask me). This 'digital' EGR valve is made up of three individual... [read more]

Sooner or later, the starter motor will fail, and when it does, you'll turn the key to crank and start the engine, but nothing happens. If this is the case in your case,... [read more]

The manifold absolute pressure (MAP) sensor is an important component of your vehicle's engine management system. It's one of the many input sensors the fuel injection... [read more]

I think you'll be surprised at how easy it is to troubleshoot the fuel pump on your 3.1L V6 Chevrolet or 3.1L V6 Pontiac vehicle as good or bad. In this tutorial, you'll... [read more]

The crankshaft position (CKP) sensor is a very critical component of the ignition system of any vehicle. Depending on your specific 3.1L V6 Chevrolet (Pontiac), it'll come... [read more]

Testing the throttle position sensor (TPS) isn't difficult as it can be tested with a multimeter. So yeah, you don't need any special testing equipment to test the TPS. In... [read more]

Testing for a blown head gasket isn't difficult. And here you'll find the four blown head gasket tests explained in a step-by-step manner. Two of the four tests can be done... [read more]

The alternator is one of the easier components to test on your 3.1L V6-equipped Chevrolet or Pontiac vehicle. In this tutorial, I'll explain how to test the alternator step... [read more]

Quite a few things can cause the engine in your 3.1L V6 Chevrolet Lumina (or Monte Carlo) to crank but not start. Thankfully, there is a diagnostic strategy that you can... [read more]

The manifold absolute pressure (MAP) sensor is a simple three-wire component easily tested with a multimeter. In this tutorial, I'll explain how to do it in a step-by-step... [read more]