GM 2.8L Index of Articles

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... [read more]

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... [read more]

Testing the throttle position sensor (TPS) on your 1991, 1992, 1993 2.8L Chevy S10 Pick-up can be accurately done with a simple multimeter. In this tutorial I'll show what... [read more]

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. Contents... [read more]

Your 2.8L Chevrolet S10's (GMC S15's) fuel system is a speed-density type... which means that the fuel injection computer relies heavily on the MAP sensor to know how much... [read more]

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... [read more]

Sooner or later, the alternator on your 2.8L equipped S10 Pick-up (S10 Blazer, GMC S15 Pick-up, or GMC S15 Jimmy) is gonna' fail. Thankfully, testing it is a pretty easy and... [read more]

The vacuum hose routing diagram label is usually located in one of two spots: on the underside of the hood or on the top of the fan shroud. Here's a copy I made myself with... [read more]

This tutorial will help you test the engine compression on your 2.8L S10 Pick-up or 2.8L S10 Blazer. It'll also help you to further narrow down the problem, if you do find... [read more]