Firing Order & Cylinder Identification

NOTE: The 4.8L, 5.3L & 6.0L engines are equipped with a coil for each spark plug which is connected to spark plug with a short high tension wire.

See FIRING ORDER & CYLINDER IDENTIFICATION .

Fig 1: Firing Order (4.3L)

Courtesy of GENERAL MOTORS CORP.

Fig 2: Firing Order (4.8L, 5.3L & 6.0L)

Courtesy of GENERAL MOTORS CORP.