GM 3.1L, 3.4L Index of Articles

A blown head gasket will make your 3.1L or 3.4L GM car or minivan over-heat and/or Not Start. On your vehicle, you probably have already replaced the water pump, or the... [read more]

Troubleshooting and testing the camshaft position sensor and diagnostic trouble code (DTC): P0341 CMP Sensor Circuit Performance, ( or DTC 17 if OBD I equipped) is one of... [read more]

Testing a misfire condition or misfire codes (P0300, P0301, P0302, P0303, P0304, P0305, P0306) on a 3.1L or 3.4L V6 Gm car or mini-van can seem like a really difficult task.... [read more]

Testing the 24X crankshaft position sensor (located behind the crankshaft pulley/balancer) or code P0336 (24X Reference signal circuit) is an easy test that only involves a... [read more]

Trying to find out which cylinder is the one misfiring can be a little difficult if the PCM (Powertrain Control Module= Fuel Injection Computer) does not set a misfire... [read more]

Testing for a bad fuel injector on the GM 3.1L and 3.4L engines can be a challenge, since the fuel injectors are underneath the upper intake manifold plenum. This article... [read more]

Testing to see if the starter motor is the one causing your GM 3.1L or 3.4L equipped car or mini-can not to crank and start is an easy test to perform. In this article I'll... [read more]

If you've been wondering if it's possible to test the thermostat on your 3.1L or 3.4L GM equipped vehicle without removing it, the answer is YES. As you may be already... [read more]

This article will walk you, step by step, through the testing of the alternator on your 3.1L or 3.4L GM car. No expensive testing equipment is needed, all you need is a... [read more]

If you're trying to nail down a hard to diagnose misfire condition or misfire codes and need to know how to do and interpret an engine compression test, you've come to the... [read more]