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

How To Test The Fuel Pump (1999-2006 V8 Chevrolet Silverado, GMC Sierra)

 How To Test The Fuel Pump (1999-2006 V8 Chevrolet Silverado, GMC Sierra)

Testing the fuel pump, on the 1999-2006 V8 Chevrolet Silverado (GMC Sierra), isn't difficult at all. A fuel pressure test gauge can easily be connected to the fuel system to find out if the fuel pump is bad or not. In this tutorial I'll...   read more >>

P0108 -What Does It Mean? (1999-2006 V8 Chevrolet Silverado, GMC Sierra)

P0108 -What Does It Mean? (1999-2006 V8 Chevrolet Silverado, GMC Sierra)

There are three possible MAP sensor trouble codes that can light up the check engine light on your Chevrolet Silverado (GMC Sierra) and the P0108: MAP Sensor Circuit High Voltage is one of them. In this tutorial I'll explain what this trouble...   read more >>

How To Test The Knock Sensors (1999-2006 V8 Chevrolet Silverado, GMC Sierra)

How To Test The Knock Sensors (1999-2006 V8 Chevrolet Silverado, GMC Sierra)

Testing the knock sensors can seem quite the challenge, since they're located under the intake manifold. But you can test them without removing the intake manifold and with just a simple multimeter. In this tutorial I'll show you how. You'll...   read more >>

P0107 -What Does It Mean? (1999-2006 V8 Chevrolet Silverado, GMC Sierra)

P0107 -What Does It Mean? (1999-2006 V8 Chevrolet Silverado, GMC Sierra)

One of the most common MAP sensor trouble codes you'll encounter, on your Chevrolet Silverado (GMC Sierra), is the P0107: MAP Sensor Circuit Low Voltage. In this tutorial I'll explain what this trouble code means. I'll also talk about some of...   read more >>

P0123 -What Does It Mean? (1999-2002 V8 Chevrolet Silverado, GMC Sierra)

P0123 -What Does It Mean? (1999-2002 V8 Chevrolet Silverado, GMC Sierra)

The P0123: Throttle Position Sensor Circuit High Voltage trouble code is one of the 3 trouble codes that the fuel injection computer will register when there's a problem with the throttle position sensor (TPS) on your 1999-2002 V8 Chevrolet...   read more >>

P0106 -What Does It Mean? (1999-2006 V8 Chevrolet Silverado, GMC Sierra)

P0106 -What Does It Mean? (1999-2006 V8 Chevrolet Silverado, GMC Sierra)

A trouble code P0106: MAP Sensor Performance Problem is probably one of the most common MAP sensor trouble codes that'll pop up and illuminate the check engine light on your Silverado or Sierra. In this tutorial I'll explain what this trouble...   read more >>

P0122 -What Does It Mean? (1999-2002 V8 Chevrolet Silverado, GMC Sierra)

P0122 -What Does It Mean? (1999-2002 V8 Chevrolet Silverado, GMC Sierra)

One of the most common throttle position sensor trouble codes is the P0122: Throttle Position Sensor Circuit Low Voltage trouble code. When this bad boy pops up, you can usually conclude that the throttle position sensor has failed. In this...   read more >>

How To Test The MAP Sensor (1999-2006 V8 Chevrolet Silverado, GMC Sierra)

How To Test The MAP Sensor (1999-2006 V8 Chevrolet Silverado, GMC Sierra)

The manifold absolute pressure (MAP) sensor, on the 1999-2006 V8 Chevrolet Silverado and GMC Sierra can be easily tested with a simple multimeter. In this tutorial I'll explain how to do it in a step-by-step way. You'll be able to easily find...   read more >>

P0121 -What Does It Mean? (1999-2002 V8 Chevrolet Silverado, GMC Sierra)

P0121 -What Does It Mean? (1999-2002 V8 Chevrolet Silverado, GMC Sierra)

When a trouble code P0121: Throttle Position Sensor Performance Problem lights up the check engine light on your Chevrolet Silverado or GMC Sierra, you can usually conclude that the throttle position sensor has failed. In this tutorial I'll...   read more >>

P0327 -What Does It Mean? (1999-2006 V8 Chevrolet Silverado, GMC Sierra)

P0327 -What Does It Mean? (1999-2006 V8 Chevrolet Silverado, GMC Sierra)

The 1999-2006 V8 equipped Chevrolet Silverado (GMC Sierra) comes equipped with 2 knock sensors. When knock sensor 1 malfunctions, the fuel injection computer will set a trouble code P0327: Knock Sensor No. 1 Circuit Problem. In this tutorial...   read more >>