GM 4.8L, 5.3L, 6.0L Index of Articles

If the crankshaft position (CKP) sensor fails, in your 4.8L, 5.3L or 6.0L GM vehicle, it's not gonna' start. In this article, I'll show you how to test it using a multimeter... [read more]

This case study will help you to test a thermal fan clutch on any GM vehicle equipped with one. Believe it or not, there's a specific and logical diagnostic strategy to... [read more]

If you've been searching for a simple resistance test and specification tutorial for the Accelerator Pedal Position (APP) Sensors... [read more] at:

Testing the intake air temperature (IAT) sensor, which is located inside the mass air flow (MAF) sensor, can easily be done with a scan tool and/or a multimeter. In this... [read more]

Testing the Accelerator Pedal Positions (APP) Assembly, to see if APP Sensor 2 is bad or not, is not that hard. In this test... [read more] at:

Troubleshooting DTCs P0135, P0141, P0155, P0161 is not hard and in this tutorial, we'll look at some of the basics you need to know and what tests you need (to solve the... [read more]

This test tutorial will help you diagnose a Accelerator Pedal Position (TP) Sensor 1 Malfunction Diagnostic Trouble Code in a... [read more] at:

Finding the exact cause of a Misfire can sometimes be a challenge that can have you pulling out your hair (and spending money on... [read more] at:

Cleaning the Throttle Plate and Throttle Plate bore on the 4.8L, 5.3L, and 6.0L GM Electronic Throttle Body is one of the most... [read more] at:

The end result of severe over-heating is usually a Blown Head Gasket, but not always. If and/when a Head Gasket Burns or the... [read more] at: