Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hello and thank you for you question, The injectors are fired by the signal from the distributor pick up coil and ignition module to the PCM (computer) . What type of problem are you having?Do you have spark to the spark plugs ?
Are you loosing spark when it will not start?
If you not loosing spark then that means the ignition module is working, so are you just loosing injector pulse?
I would start first with checking to see if your getting the injector signal out of the ignition module to the ECM (computer) while the problem is occurring.. I have enclosed the steps in the link below, copy and paste the link to your browser to open and view them.https://dl.dropboxusercontent.com/u/104923897/ECM%20test%20Nov%2013.pdf
What are you calling the doc, due you mean the data link connector?
The DCL is the date link connector located right under the dash , its the connector you connect your scan tool to to retrieve codes from the computer. Take a look under there just to the left of the steering column and you will see it.