i have 2002 gmc yukon slt engine miss i changed engine plugs

Question

check engine light still on after changing engine plugs
also service 4 wheel drive light on

Answer 1

Engine misfire can also come from the ignition coil or its sparkplug wires, Determine what cylinder has the misfire condition , this would narrow down the cause for the misfire condition.

​ The distributor cap can also short together with each other so the cap should be tested  , it does not have to leave carbon traces