GM 3.8L Index of Articles

How To Test The A/C-Heater Blower Motor (GM 3.8L)

How To Test The A/C-Heater Blower Motor (GM 3.8L)

One of the components that you're gonna' have to replace sooner or later on your 3.8L equipped GM car is the blower motor. Thankfully, testing the blower motor is one of the easiest tests you can do on your car. NOTE: Even though this...   read more >>

How To Test The Blower Control Module (GM 3.8L)

How To Test The Blower Control Module (GM 3.8L)

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...   read more >>

How To Clean The MAF Sensor (GM 3.3L 3.8L)

How To Clean The MAF Sensor (GM 3.3L 3.8L)

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 >>

A Water Pump Coolant Leak Can Lead to Serious Engine Problems

A Water Pump Coolant Leak Can Lead to Serious Engine Problems

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 >>

How To Test The Fuel Pump (GM 3.8L)

How To Test The Fuel Pump (GM 3.8L)

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...   read more >>

How To Test: P0112 OBD II Trouble Code (GM 3.8L)

How To Test: P0112 OBD II Trouble Code (GM 3.8L)

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 >>

How To Troubleshoot A No Start (GM 3.8L)

How To Troubleshoot A No Start (GM 3.8L)

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......   read more >>

How To Test: P0113 OBD II Trouble Code (GM 3.8L)

How To Test: P0113 OBD II Trouble Code (GM 3.8L)

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 >>

How Can I Tell If My Automatic Transmission Needs An Overhaul?

How Can I Tell If My Automatic Transmission Needs An Overhaul?

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 >>

How To Test Trouble Code P0420 (GM 3.8L)

How To Test Trouble Code P0420 (GM 3.8L)

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 >>