manual check engine light on 2000 Pontiac Bonneville

How to manually check the codes for check engine light

by in Green Bay, WI on June 01, 2011
1 answer 2 comments
ANSWER by , June 01, 2011
you need a code reader. no other way. even a reader will not tell you the failure, just the system failure. let a shop do a real diag for you. Roy
COMMENT by , June 01, 2011
Thanks, some can access trough cars chip on dash...
COMMENT by , June 01, 2011
chrysler can be done by cycling the ket 3 times but does not translate the code into terms we know without a manual. they are the only ones. Roy