S10, S15, Sonoma 2.5L Index of Articles

The manifold air temperature (MAT) sensor is an important component in the speed-density fuel injection system of your 2.5L Chevy S10 pickup (GMC S15 pickup, GMC... [read more]

You can easily test the blower motor speed control switch with a few tests performed with a multimeter. In this tutorial, I'll show you step-by-step how to do it. With your... [read more]

The ignition coil can be checked easily and quickly with a few simple tools and in this tutorial, I'll explain how to test it with four easy tests. All four ignition coil... [read more]

Testing the blower motor resistor isn't difficult and in this tutorial I'll show you how to. With your test results, you'll quickly determine if the blower motor resistor is... [read more]

This tutorial is a step-by-step guide to testing the starter motor to see if it's good or bad. All four tests are performed without removing the starter motor from the... [read more]

In this tutorial, I'll explain how to retrieve OBD I diagnostic trouble codes by bridging (jumpering) two diagnostic link connector (DLC) terminals. You'll also find a... [read more]

Although the electric fuel pump in your 2.5L Chevrolet S10 (GMC S15 pickup, GMC Sonoma) is located in the fuel tank, testing it is not difficult. The best part is that you... [read more]

I think you'll be quite impressed with how easy it is to test both the ignition control module (ICM) and the distributor pickup coil to see if either of them have... [read more]

The alternator can be easily tested with a simple multimeter without having to remove it from the vehicle. In this tutorial, you'll find step-by-step instructions on how to... [read more]

The blower motor is one of the easiest components to check on your 2.5L Chevy S10 pickup (GMC S15 pickup, GMC Sonoma). In this tutorial, I'll walk you through the testing... [read more]