GM 3.5L Index of Articles

There are 3 very common tests that are done to find out if the head gasket is blown on your GM 3.5L or 4.2L equipped pickup or SUV. These three tests are: Checking... [read more]

If your check engine light is on and you have a diagnostic trouble code P0135 stored in the PCM's memory, then you've come to the right place to test and troubleshoot the... [read more]

Diagnosing a bad oxygen sensor that's making the check engine light light (CEL) up with a P0141 isn't hard at all. In this tutorial, I'll show you how to do it with a... [read more]

As you might already be aware (and if you're not, well that's OK, too), the intake air temperature (IAT) sensor is part of the mass air flow (MAF) sensor. The MAF sensor... [read more]

Testing the ignition coils on your 3.5L 5 cylinder or 4.2L 6 cylinder is not that hard to do and I'll show you how to do it in this tutorial. As you may already be aware,... [read more]

Testing to see if the MAF sensor on your 3.5L GM equipped car or pickup or SUV is bad or not can easily be done with a multimeter. In this article I'll show you how to do... [read more]

In this tutorial, I'm gonna' show you the fastest and surest way to test the manifold absolute pressure (MAP) sensor on your 3.5L or 4.2L equipped GM pickup or SUV. Not only... [read more]

In this test tutorial, I'll show you how to test the Mass Air Flow Sensor to see if it's bad (and lighting up the check engine light)... [read more] at: easyautodiagnostics.com

In this tutorial, I'll show you how to do an engine compression test on your 3.5L (5 cylinder) or 4.2L (6 cylinder) equipped GM pickup or SUV. Why check the engine... [read more]

There are 3 very common tests to check for a blown head gasket, and in this tutorial, I'm gonna' show you how to them in a step-by-step fashion. 2 of the 3 can be done in... [read more]