How To Read Trouble Codes OBDI System 88-95 GM Trucks.

[@edgarryder2488]

How do I read a code

[@NVSRides]

If you have the code just Google it. If your asking how to read the code you will need to count the light flashes.

[@edgarryder2488]

Code gmobd1 code 42

[@NVSRides]

Check the wiring and connectors between the ignition module and the ECM. Check the ignition module. Replace the ECM. This is what I found for code 42.