- Jul 1, 2008
- 94 LT1 Coupe White/gray
Just came home from the shop...they got the head gasket in and it's running, but it's missing on at least one cylinder. I felt so sorry for my mechanic because just before I got there someone had just chewed him out about something. It's still throwing the sys light and the odo err. His machine said the sys light was a secondary ABS system and the CCM codes were rear defroster circuit and something like fuel enable circuit fault. As I was standing there with him I was going through the things I learned on this site...air, fuel, spark. He checked the injectors and the wires and they checked out. He said that each individual injector checked out and that there was sufficient fuel pressure. He's thinking maybe he got a bad plug. They were AC/Delco platinum from O'Reileys. He said sometimes it misses worse than others. They also replaced the cats today. Any ideas?