For 1990-2009 cars only
Ignition Coil Not Operating Properly 4.3 L Only
Refer to Enhanced Ignition System Diagnosis
in Engine Controls-4.3L.
Ignition Coil Not Operating Properly 4.8 L, 5.3 L, 6.0 L
Refer to Electronic Ignition (EI) System Diagnosis in Engine Controls-4.8L, 5.3L, 6.0L.
