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

Starter Motor Circuit Diagram (2003 V8 Chevrolet Express, GMC Savana)

Starter Motor Circuit Diagram (2003 V8 Chevrolet Express, GMC Savana)

APPLIES TO: This starter motor circuit wiring diagram applies to the following vehicles: Chevrolet: Express (1500): 4.8L, 5.3L: 2003 Express (2500): 4.8L, 5.3L, 6.0L: 2003 Express...   read more >>

How To Do A Compression Test (2003-2014 V8 Chevrolet Express, GMC Savana)

How To Do A Compression Test (2003-2014 V8 Chevrolet Express, GMC Savana)

In this tutorial I'm gonna' explain how to do a compression test on the 4.8L, 5.3L, 6.0L V8 engines of the Chevrolet Express and GMC Savana van. I'm also going to explain how to interpret to your test results so that you can find out if your...   read more >>

P0135, P0155 -Upstream O2 Sensor Test (2003-2005 GM 4.8L, 5.3L, 6.0L)

P0135, P0155 -Upstream O2 Sensor Test (2003-2005 GM 4.8L, 5.3L, 6.0L)

This tutorial will help you to test diagnostic trouble codes P0135 and P0155 on specific 2003, 2004, and 2005 Chevy and GMC Pickups, Vans, and SUVs with either a 4.8L, 5.3L, or 6.0L V8. If you're wondering if this tutorial applies to your...   read more >>

How To Test The Fuel Pump (2003-2007 V8 Chevrolet Express, GMC Savana)

How To Test The Fuel Pump (2003-2007 V8 Chevrolet Express, GMC Savana)

Testing the fuel pump, on your 2003-2007 V8 equipped Chevrolet Express (GMC Savana) van, can easily and accurately be done with a fuel pressure test gauge. In this tutorial I'll explain how it's done so that you can find out if the fuel pump is...   read more >>

P0135, P0155 -Upstream O2 Sensor Test (2006-2009 GM 4.8L, 5.3L, 6.0L)

P0135, P0155 -Upstream O2 Sensor Test (2006-2009 GM 4.8L, 5.3L, 6.0L)

With the help from this tutorial, you be able to test the oxygen sensor to see if its heater element is really fried, and thus causing the P0135 or P0155 to light up your check engine light. In case this tutorial doesn't cover your specific...   read more >>

Ignition Coil Circuit Wiring Diagram (2003-2007 V8 Chevrolet Express, GMC Savana)

Ignition Coil Circuit Wiring Diagram (2003-2007 V8 Chevrolet Express, GMC Savana)

APPLIES TO: This ignition system wiring diagram applies to the following vehicles: Chevrolet: Express (1500): 4.8L, 5.3L: 2003, 2004, 2005, 2006, 2007 Express (2500): 4.8L, 5.3L, 6.0L: 2003, 2004,...   read more >>

P0141, P0161 Downstream O2 Sensor Test (1999-2002 GM 4.8L, 5.3L, 6.0L)

P0141, P0161 Downstream O2 Sensor Test (1999-2002 GM 4.8L, 5.3L, 6.0L)

This tutorial will help you test the downstream oxygen sensor's on your 4.8L, 5.3L, or 6.0L Chevy or GMC Pickup or SUV. If this tutorial doesn't cover your specific vehicle, take a look at the index of tutorials here: O2 Sensor Tutorial...   read more >>

Fuel Pump Wiring Diagram (2003-2007 V8 Chevrolet Express, GMC Savana)

Fuel Pump Wiring Diagram (2003-2007 V8 Chevrolet Express, GMC Savana)

APPLIES TO: This simplified fuel pump circuit wiring diagram applies to the following vehicles: Chevrolet: Express (1500): 4.8L, 5.3L: 2003, 2004, 2005, 2006, 2007 Express (2500): 4.8L, 5.3L, 6.0L:...   read more >>

P0141, P0161 -Downstream O2 Sensor Test (2003-2005 GM 5.3L, 6.0L)

P0141, P0161 -Downstream O2 Sensor Test (2003-2005 GM 5.3L, 6.0L)

Testing the post-catalytic converter oxygen (O2) sensors, to see if they are causing the P0141 or P0161 to light up your check engine light (CEL) on your instrument cluster is not hard to do. With the testing instructions, in this tutorial, I'll...   read more >>

P0135, P0155 -Upstream O2 Sensor Test (1999-2002 GM 4.8L, 5.3L, 6.0L)

P0135, P0155 -Upstream O2 Sensor Test (1999-2002 GM 4.8L, 5.3L, 6.0L)

This tutorial will help you to test diagnostic trouble codes P0135 and P0155 on specific Chevy and GMC Pickups, Vans, and SUVs with either a 4.8L, 5.3L, or 6.0L V8. To see if this test tutorial is the one you need for your specific GM vehicle,...   read more >>