GMC G1500 firing order
EXPRESS, SAVANA, G1500, G2500, G3500, 1998-2005 FIRING ORDERS REPAIR GUIDE
4.3L Engines Firing order: 1-6-5-4-3-2 Distributor rotation: Clockwise
4.8L, 5.3L, 6.0L and 8.1L Engines Firing order: 1-8-7-2-6-5-4-3 Distributorless ignition
system (one coil on each cylinder)
5.0L, 5.7L and 7.4L Engines Firing order: 1-8-4-3-6-5-7-2 Distributor rotation:
Clockwise
4.3L Engines Firing order: 1-6-5-4-3-2 Distributor rotation: Clockwise
4.8L, 5.3L and 6.0L Engines Firing order: 1-8-7-2-6-5-4-3 Distributorless ignition
system (one coil on each cylinder)
5.0L, 5.7L and 7.4L Engines Firing order: 1-8-4-3-6-5-7-2 Distributor rotation:
Clockwise
