GM 2.8L Index of Articles

How To Find a Misfiring Cylinder (2.8L V6 GM)

How To Find a Misfiring Cylinder (2.8L V6 GM)

Even though the 2.8L V6 TBI fuel injected Chevy S10 (GMC S15) does not come with OBD II misfire diagnostics, you can still find out exactly which cylinder is dead (misfiring)! In this tutorial I'll show you how to do that in a step-by-step...   read more >>

How To Test the Ignition Control Module (2.8L V6 GM)

How To Test the Ignition Control Module (2.8L V6 GM)

When the ignition control module fails, your 2.8 liter Chevy S10 (GMC S15) will crank but not start. Testing the GM 7 pin ignition control module is easier than you think and you don't even have to remove it (from the vehicle) to test it. Also,...   read more >>

How to Test the Blower Control Switch (2.8L Chevy S10/ GMC S15)

How to Test the Blower Control Switch (2.8L Chevy S10/ GMC S15)

The blower motor control switch, on your Chevrolet S10 (GMC S15) can be easily tested to find out if it's bad (or not). In this tutorial, I'll show you two different ways of doing this. Contents of this tutorial at a quick glance: Basics...   read more >>

How To Test the Ignition Coil -No Start Tests (2.8L V6 GM)

How To Test the Ignition Coil -No Start Tests (2.8L V6 GM)

If the ignition coil on your 2.8L Chevy S10 (GMC S15) fails, the engine is going to crank but not start due to a lack of spark. The cool thing is that testing the ignition coil is not that hard. You're going to be surprised just how easy it is to...   read more >>

How to Test the Blower Resistor (2.8L Chevy S10/GMC S15)

How to Test the Blower Resistor (2.8L Chevy S10/GMC S15)

The blower motor resistor can be easily tested with a set of simple multimeter resistance tests (especially since it's very accessible). So, if you suspect that the blower motor resistor, in your 2.8L Chevy S10 (GMC S15), is bad... I'll show you...   read more >>

How To Test for a Blown Head Gasket (2.8L V6 S10/S15)

How To Test for a Blown Head Gasket (2.8L V6 S10/S15)

There are 4 specific ways to test for a blown head gasket. So, if you suspect that your Chevy S10 (or GMC S15) has a blown head gasket... this tutorial will show you how to test for a blown head gasket (just like they do at the auto repair...   read more >>

How to Test the Blower Motor (2.8L Chevy S10/ GMC S15)

How to Test the Blower Motor (2.8L Chevy S10/ GMC S15)

The blower motor, on your Chevy S10 (GMC S15), is one of the easiest components to test. In this tutorial I'll show you how in a step-by-step manner. Here are the contents of this tutorial at a quick glance: Symptoms a of Bad Blower...   read more >>

How to Test the Oxygen Sensor With a Multimeter (2.8L V6 S10/S15)

How to Test the Oxygen Sensor With a Multimeter (2.8L V6 S10/S15)

The oxygen sensor, on your OBD I 2.8L V6 equipped Chevy S10 (or GMC s15) is a single wire type that can be easily tested with a multimeter. You don't need a professional technician level scan tool to do it. In this tutorial I'll show you how in...   read more >>

How to Retrieve OBD I Trouble Codes (2.8L Chevy S10, GMC S15)

How to Retrieve OBD I Trouble Codes (2.8L Chevy S10, GMC S15)

GM's on-board diagnostic system on all pre-1996 S10/S15 vehicles have the capability of displaying trouble codes by jumpering two terminals of the diagnostic link connector (DLC). In this tutorial, I'll show you where to find this connector and...   read more >>

How to Test the Throttle Position Sensor (1986-1991 2.8L S10/S15)

How to Test the Throttle Position Sensor (1986-1991 2.8L S10/S15)

Testing the throttle position sensor on your 1986-1991 2.8L V6 equipped S10 (or S15) is a pretty simple and straightforward process. The cool thing about the TPS test is that it's done with a simple multimeter... no scan tool needed. The GM...   read more >>