Tips on how to Verify for a Service Engine Soon Light within a Chevrolet Blazer Vehicle Diagnostic equipment
1Park the car on a level surface and apply the parking brake.
2Locate the OBD II plug. It'll be situated underneath the dash between the steering column plus the driver’s side door.
3Slide the diagnostic code scanner’s cable into the OBD II plug on the vehicle.
4Insert the key into the ignition and turn it to the “run” position Car Diagnostic Tools, but do not start the engine.
5Press the button on the scanner that reads “scan for trouble codes” or something similar. The code or codes will appear on screen as a "P" followed by four numbers such as P0171. Wait for the scanner to finish scanning.
6Look up the trouble code in a service manual or search the internet. If doing an internet search include the make model and year of your car along with the trouble code. Sometimes the code might pinpoint the exact component that needs to be replaced, other times the code will only pinpoint a specific subsystem and you might need to do further troubleshooting.
7Press the button on the scanner that reads “clear trouble codes” or something similar. This will clear all codes from the computer's memory.
8Pull the cable from the OBD II plug.
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