GM 2.8L Index of Articles

1991-1993 2.8L Chevy S10 Starter Motor Circuit Diagram

1991-1993 2.8L Chevy S10 Starter Motor Circuit Diagram

This typical circuit diagram of the starter motor applies to the 1991, 1992, 1993 2.8L V6 Chevrolet S10 and GMC S15 Pick Ups equipped with an automatic transmission. CIRCUIT DIAGRAM 2: With Manual Transmission This typical circuit diagram...   read more >>

1991-1993 2.8L Chevy S10 Blower Motor Circuit Diagram

1991-1993 2.8L Chevy S10 Blower Motor Circuit Diagram

This typical circuit diagram of the blower motor applies to the 1991, 1992, 1993 2.8L V6 Chevrolet S10 and GMC S15 Pick Ups. This circuit diagram includes the following circuits: blower motor, blower switch, blower resistor, blower...   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 >>

1991-1993 2.8L Chevy S10 Ignition System Circuit Diagram

1991-1993 2.8L Chevy S10 Ignition System Circuit Diagram

This typical circuit diagram of the ignition coil, ignition control module, and pickup coil applies to the 1991, 1992, 1993 2.8L V6 Chevrolet S10 and 2.8L GMC S15. NOTE: Testing the ignition system is a breeze. This tutorial will help you test...   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 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 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 >>

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 >>