Follow the links below to see the summary list of service bulletins for the C4 year of interest.  Service Bulletins were distributed by Chevrolet in response to known C4 problems and procedural changes.

1984 1985 1986 1987
1988 1989 1990 1991
1992 1993 1994 1995




You may also wish to look at the Defect Reports database. Defect Reports are submitted by owners and repair shops directly to the National Highway Transportation Safety Board and cover problems not necessarily acknowledged by the manufacturer.