GM 3.1L, 3.4L Index of Articles

How To Test A Blown Head Gasket (GM 3.1L, 3.4L)

How To Test A Blown Head Gasket  (GM 3.1L, 3.4L)

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 thermostat or the fan motor or know that all these are OK and yet the car or...   read more >>

How To Test The Cam Sensor (P0341) (GM 3.1L, 3.4L)

How To Test The Cam Sensor (P0341) (GM 3.1L, 3.4L)

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 the easiest tests on the planet! All you need is a multimeter and this...   read more >>

How To Troubleshoot Misfire Codes (GM 3.1L, 3.4L)

How To Troubleshoot Misfire Codes (GM 3.1L, 3.4L)

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. You could be asking yourself questions like: Where do I Start? What Do I...   read more >>

How To Test The 24X Crank Sensor (GM 3.1L, 3.4L)

How To Test The 24X Crank Sensor (GM 3.1L, 3.4L)

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 digital multimeter! You don't even need a scan tool (although a scan tool...   read more >>

How To Do A Cylinder Balance Test (GM 3.1L, 3.4L)

How To Do A Cylinder Balance Test (GM 3.1L, 3.4L)

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 code. Unplugging one spark plug wire at a time (while the engine is idling)...   read more >>

How To Test The Fuel Injectors (GM 3.1L, 3.4L)

How To Test The Fuel Injectors (GM 3.1L, 3.4L)

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 will show you how to test them using a simple multimeter. No scan tool is...   read more >>

How To Test The Starter Motor (GM 3.1L, 3.4L)

How To Test The Starter Motor (GM 3.1L, 3.4L)

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 show you how to do it in three simple test steps. Since this is an On-Car...   read more >>

How To Test The Thermostat (GM 3.1L, 3.4L)

How To Test The Thermostat (GM 3.1L, 3.4L)

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 aware, the thermostat is located under the intake manifold's throttle body...   read more >>

How To Test The Alternator (GM 3.1L, 3.4L)

How To Test The Alternator (GM 3.1L, 3.4L)

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 multimeter to accomplish this test.. This is an On-Car Test of the...   read more >>

How To Test Engine Compression (GM 3.1L, 3.4L)

How To Test Engine Compression (GM 3.1L, 3.4L)

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 right article. This article will walk you thru' the engine compression...   read more >>