GM 3.8L Index of Articles

If the blower motor in your 3.8L GM vehicle is stuck in only one speed (usually stuck in high) or no blower speeds work, then there's a good chance that the blower control module is bad and behind the problem. Although the blower control module...   read more >>

Cleaning the mass air flow sensor on your 3.3L, 3.8L (and some select 3.1L with a MAF sensor) is not hard at all. In this article, I'll show you how to do it and more importantly, I'll shed some light on some important do's and don'ts when...   read more >>

I love that the Internet allows us to learn from other's experiences. I have learned a lot myself over the years and this website is my way of giving back. The post in this page is one that offers several important lessons... Although this the...   read more >>

When the fuel pump goes bad on your GM 3.8L equipped car or mini-van, it's going to crank but not start. Although it stinks that your vehicle is not starting, the cool thing is that testing the fuel pump is not hard. I'm going to show you two...   read more >>

OBD II trouble code P0112 Intake Air Temperature Circuit Low Input usually points to a failed intake air temperature (IAT) sensor, but not always. In some cases, the IAT sensor's wiring is at fault. In this tutorial, I'm gonna' show you some of...   read more >>

One of the most stressful things to have to experience in life is having the car no start. What makes matters even worse is not knowing what could be the cause of the cranks but does not start condition. I hate to be the bearer of bad news but...   read more >>

OBD II trouble code P0113 Intake Air Temperature Circuit High Input usually points to a bad intake air temperature (IAT) sensor, but now always. In this tutorial, I'm gonna' show you some of the basics you need to know about what DTC P0113 means...   read more >>

This tutorial is a primer that'll help you identify the problem (with your vehicle's automatic transmission) as either being electrical in nature or... as being some sort of internal damage that'll require an overhaul. Now, although in this...   read more >>

OBD II trouble code P0420 Catalyst Efficiency Below Threshold (Bank 1) is one of the most common codes encountered on the GM 3.8L equipped cars and mini-vans. In the majority of the cases, this code points to a bad catalytic converter. In this...   read more >>