Ignition Coil Circuit Wiring Diagram (2003-2006 V8 Chevrolet Silverado, GMC Sierra)

APPLIES TO: This ignition system wiring diagram applies to the following vehicles:

Chevrolet:

• 4.8L Chevrolet Silverado (1500, 2500): 2003, 2004, 2005, 2006
• 5.3L Chevrolet Silverado (1500, 2500): 2003, 2004, 2005, 2006
• 6.0L Chevrolet Silverado (2500): 2003, 2004, 2005, 2006

GMC:

• 4.8L GMC Sierra (1500, 2500): 2003, 2004, 2005, 2006
• 5.3L GMC Sierra (1500, 2500): 2003, 2004, 2005, 2006
• 6.0L GMC Sierra (2500): 2003, 2004, 2005, 2006

You can find the 1999-2002 V8 Chevrolet Silverado (GMC Sierra) ignition coil circuit diagram here:

• Ignition Coil Circuit Wiring Diagram (1999-2002 V8 Chevrolet Silverado, GMC Sierra).

The following tutorial explains how to test the ignition coils:

• How To Test The COP Coils (GM 4.8L, 5.3L, 6.0L, 8.1L).

If you need to test the crankshaft position sensor, see this tutorial:

• Crank Sensor Test (4.8L, 5.3L, 6.0L) No Spark No Start Tests (at: troubleshootmyvehicle.com).

More Chevrolet Silverado (GMC Sierra) Tutorials

You can find a complete list of V8 Chevrolet Silverado (GMC Sierra) tutorials in this index:

• GM 4.8L, 5.3L, 6.0L Index Of Articles.

Here's a small sample of the tutorials you'll find in the index:

• Resistance Specifications Of The TAC Electronic Throttle Body.
• How To Test The GM Accelerator Pedal Position (APP) Sensor 2.
• How To Test The MAF Sensor (GM 4.8L, 5.3L, 6.0L, 8.1L).
• Blown Head Gasket Test (GM 4.8L, 5.3L, 6.0L).