Having problems with your 1998 GMC Envoy ?
Car missing new plugs,wires,rotor button, and distuberator cap, still missing
Try reseting the computer. Disconnect battery for 10 min. If that doesn't work check for a bad plug, even though you changed them 1 could be bad or cracked?
Repair Help & Product Troubleshooting for 1998 GMC Envoy
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