Hello Gm techs, This Buick is really putting me through the ringer. The customer complained of a vibration at around 25 mph. I tested it felt exactly like a misfire(plug or wire). Ignition system scoped out ok. Fuel pressure is at spec. When you shift ...

FIX posted 12/18/1999

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle