GM 2.8L Index of Articles

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... [read more]

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... [read more]

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... [read more]

There are four specific methods to test for a blown head gasket. So if you suspect your Chevy S10 pickup (GMC S15 pickup, GMC Sonoma) has a blown head gasket, this tutorial... [read more]

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:... [read more]

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 -a professional, technician-level... [read more]

Even though the 2.8L V6 TBI fuel injected Chevy S10 pickup (GMC S15 pickup, GMC Sonoma) does not come with OBD II misfire diagnostics, you can still find out exactly which... [read more]

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... [read more]

When the GM 7-pin HEI ignition control module (ICM) fails, your 2.8L V6 Chevy S10 pickup (GMC S15 pickup, GMC Sonoma) will crank but not start. Don't worry! Testing the ICM... [read more]