GM 3.9L Index of Articles

In this tutorial I'm going to show you how to test the manifold absolute pressure (MAP) sensor on the 2007, 2008, 2009 and 2010 3.9L Chevrolet Impala. The absolute best... [read more]

The MAP sensor, on the 2006-2007 3.9L Chevrolet Malibu and Impala can be tested very easily with just a simple multimeter. This test is so accurate that with its results... [read more]

NOTE: The following ignition system wiring diagrams apply only to the 2006, 2007, 2008, and 2009 3.9L V6 Chevrolet Impala. Contents of this tutorial at a... [read more]

This typical circuit diagram of the blower motor and blower motor control processor (electronic blower motor resistor) circuit applies to the 2006, 2007 3.9L V6 Chevrolet... [read more]

Since quite a few things can cause the spark plugs to fail (particularly on high mileage engines), sooner or later you're going to have to replace the spark plugs on your... [read more]

This typical circuit diagram of the blower motor and blower motor control processor (electronic blower motor resistor) circuit applies to the 2006, 2007, 2008, 2009 3.9L V6... [read more]

There are 4 tests that are done to confirm a blown head gasket and in this tutorial I'm going to explain how to do them. With your test results you'll be to find out if... [read more]

NOTE: The following ignition system wiring diagrams apply only to the 2006, 2007, 2008, and 2009 3.9L V6 Pontiac G6. Contents of this tutorial at a... [read more]

Engine compression problems can cause a no start problem or a misfire condition. In this tutorial I'm going to explain how to test the engine compression on the 3.9L V6 GM... [read more]

NOTE: The following ignition system wiring diagrams apply only to the 2006 and 2007 3.9L V6 Chevrolet Malibu. Contents of this tutorial at a... [read more]