Having problems with your 1998 Chevrolet Express ?
Need firing order spark plugs 98 chev express 1500
I am going by the '99-'06 Full size truck Chilton's Manual. The firing order should be the same. It is 1-6-5-4-3-2 on the v-6 engine. 1,3,5 are on the driver's side from grill to firewall and 2,4,6, are on the passenger's side from grill to firewall(this is in the heads). From the boot coming off the main coil(the only one not going to a spark plug) clockwise the firing order on the distributor is 5-1-3-2-4-6. Also make sure the plugs are gapped at .060 in. Hope this helps.
Repair Help & Product Troubleshooting for 1998 Chevrolet Express
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