What Is the Firing Order of a 2004 Chevy Silverado 2500 2WD V8-6.6L Turbo Truck?

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An engine's firing order is the sequence that each cylinder is used in power delivery. The firing order for the 6.6L turbo diesel V8 in the 2004 Chevrolet Silverado 2500 2WD is 1-2-7-8-4-5-6-3.

Gasoline Versus Diesel

  • In a gasoline engine, the distributor or Engine Control Unit sends electricity to individual spark plugs to ignite fuel in each cylinder in a specific order. In a diesel engine it is determined by the order in which fuel is injected into each cylinder.

Cylinder 1

  • Engine firing orders always start with cylinder number one, which on this engine is located at the front left of the engine from the driver's point of view.

Cylinder Banks

  • GM V8 cylinders are numbered 1-3-5-7 on the left (driver's) side of the engine, and 2-4-6-8 on the right (passenger) side.

References

  • "Haynes Repair Manual, Chevrolet Silverado GMC Sierra: 1999 thru 2006 2WD and 4WD"; Haynes Manuals, Inc.; 2008
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