GM 3.1L, 3.4L Index of Articles

This is a real life case study that will help you diagnose a hard to find misfire. Although this case study involves a 2000 Chevy... [read more] at:

If you've had the misfortune of having to replace or are in the process of having to replace the head gaskets on your GM 3.1L or 3.4L... [read more] at:

This article will take you step by step thru' the testing and troubleshooting of the throttle position sensor on your GM 3.1L or 3.4L V6 equipped car (Buick, Chevrolet,... [read more]

In this type of Direct Ignition System (DIS), three individual ignition coil packs are mounted right on top of the ignition control module (ICM). As you already know, each... [read more]

This article will help you test the ignition control module (ICM) and 3X crankshaft position sensor on all of the GM 3.1L and 3.4L overhead valve engines (the 3X crankshaft... [read more]

Testing and troubleshooting an EGR valve issue or EGR diagnostic trouble code (DTC) on your GM vehicle is not hard to do. In this article, I'll show you how to do it... [read more]