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 on 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 on June 01, 2011
Thanks, some can access trough cars chip on dash...
COMMENT by on 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
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