GM 2.4L Index of Articles
How To Test Engine Compression (2006-2012 2.4L Ecotec)
- November 30, 2015
- Updated: February 10, 2017
- Written by: Abraham Torres-Arredondo

As your car's 2.4L Ecotec engine starts to age (and accumulate miles), the piston rings and the cylinder head valves start to wear. Eventually this wear and tear will cause the cylinders to produce low or no compression. The end result is a... read more >>
How To Test The Fuel Pump (2008-2010 GM 2.4L Ecotec)
- November 10, 2015
- Updated: February 10, 2017
- Written by: Abraham Torres-Arredondo

Quite a few things can cause your car to not start and a failed fuel pump is one of them. The cool thing is that you can easily and quickly check the fuel pump (to see if it's bad or not). Why? Because GM has installed a Schrader valve on the fuel... read more >>
Testing Diagnostic Trouble Codes: P0135, P0141, P0155, P0161
- August 16, 2012
- Updated: June 04, 2013
- Written by: Abraham Torres-Arredondo

This article will help you to diagnose Diagnostic Trouble Codes: P0135, P0141, P0155, P0161 on your GM 2.2L, 2.4L, 3.1L, 3.4L, 3.8L, 4.3L, 5.0L, 5.7L. All of these Trouble Codes have to do with a malfunction in the Oxygen Sensor's Heater or it's... read more >>
How To Test The Fuel Injectors (2008-2010 GM 2.4L)
- November 09, 2015
- Updated: February 10, 2017
- Written by: Abraham Torres-Arredondo

You'd be surprised just how easy it is to diagnose a bad fuel injector on your 2008-2010 2.4L Ecotec equipped vehicle. For the most part all it takes is a simple multimeter resistance test. In this tutorial I'll show you how to do it in a... read more >>
How To Test The Oxygen Sensor (GM 2.4L Quad 4)
- July 25, 2011
- Updated: February 10, 2017
- Written by: Abraham Torres-Arredondo

It is possible to test the oxygen sensor on your GM 2.4L Quad 4 vehicle before buying it, and in this article I'll show you how to do it. Being able to say “YES, the O2 sensor is BAD or NO, it's OK” will save you some time and money,... read more >>
How To Test Misfire Codes (GM 2.3L, 2.4L Quad 4)
- October 28, 2013
- Updated: February 10, 2017
- Written by: Abraham Torres-Arredondo

I can still remember the first time a Quad-4 equipped GM came into the shop (where I worked) and thinking what a pain in the neck it would be to work on it... after this first impression and as the years and experience accumulated I can tell you... read more >>
How To Test For A Blown Head Gasket (GM 2.4L Quad 4)
- August 16, 2012
- Updated: February 10, 2017
- Written by: Abraham Torres-Arredondo

Overheating is the number one cause of a blown head gasket on a 2.4L Quad 4 equipped Buick (or Chevy, Olds, Pontiac) car. If you think that your car has a blown head gasket, this article will help you to find out with three fast and easy... read more >>
How To Do A Cylinder Balance Test (GM 2.3L, 2.4L Quad 4)
- October 18, 2013
- Updated: February 10, 2017
- Written by: Abraham Torres-Arredondo

Knowing how to do a manual cylinder balance test (when trying find the misfiring cylinder on your Quad-4 equipped GM vehicle) is gonna' save you a lot of time and frustration when the PCM refuses to give you a specific misfire trouble code. Why?... read more >>
How To Test Engine Compression (GM 2.4L Quad 4)
- August 16, 2012
- Updated: March 24, 2017
- Written by: Abraham Torres-Arredondo

Troubleshooting a misfire (P0300, P0301, P0302, P0303, P0304) or rough idle condition on your Quad 4, whether it's a Chevy, or a Buick, or a Pontiac, or an Olds, can be a challenge that can have you pulling out your hair (I know from first hand... read more >>
How To Troubleshoot A No Start (GM 2.3L, 2.4L Quad 4)
- October 12, 2013
- Updated: February 10, 2017
- Written by: Abraham Torres-Arredondo

Testing a cranks but does not start condition on your GM 2.3L or 2.4L Quad-4 engine isn't as hard as you might think. In this tutorial, I'll explain the basics of what causes a cranks but does not start condition and the basic tests you can do... read more >>