repair on 2003 Chevrolet Express 3500

check eng. and security light came on ,when you turn switch off lights stayed on, now when you turn switch off the engine keep running ,security light on, and transmission isnt shifting right, how do you fit this ?

by in Ringgold, GA on April 05, 2010
1 answer 1 comment
ANSWER by on April 05, 2010
A scan tool will be needed to retrieve codes in the memory of your Chevy's computer, computers in your car may not be communicating properly with each other but a scan tool that can communicate with all the computers of your Chevy will be required to do basic diagnostic tests.
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COMMENT by on June 13, 2010
Thanks, I do not have a scan tool. Does this mean I have to bring the van to a repair facility for diagnotistic?
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