Tip & How-To about Chevrolet Blazer
Here is a tip for retrieving Diagnostic Trouble Codes (DTCs) from any OBD1 GM vehicle.
First thing is your going to need to get a paper clip, and bend it into a U shape.
Now stick the ends of the paper clip into the 2 top right hand side holes in the connector. Note: Do this with the key in the run position, but with the engine off.
You should now see your check engine light flash once, pause, then 2 times. This indicates that your ECM is working properly.
Now it will blink indicating your code. For example an EGR failure code is DTC 32. You will see your light blink 3 times, pause, then blink 2 times, giving you code 32.
A list of codes can be found here: http://www.gmtuners.com/OBD1_DTC.htm.
Hopefully this helps some of you all out there. Thanks for looking.
Posted by Scott... on
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