Base Engine Misfire Without Internal Engine Noises
WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Diagnostic Symptom Check - Base Engine Misfire Without Internal Engine Noises (1 Of 2)
Courtesy of GENERAL MOTORS CORP.
Fig 2: Diagnostic Symptom Check - Base Engine Misfire Without Internal Engine Noises (2 Of 2)