98 blazer lol
#7
Tech Article (DIY) section to the rescue --> EGR Valve Cleaning
If the "light" you are talking about is the check engine light, having the PCM scanned will give you direction as to what might be causing it. Whenever the check engine light comes on, the PCM should be scanned for stored/pending codes to get an idea of what the PCM is seeing.
Another idea on your problem could be a sticky IAC (idle air control) valve. There is another Tech Article that goes through the throttle body removal to get it good and clean. You can familiarize yourself with the tech articles available by clicking on the index link in my signature.
If the "light" you are talking about is the check engine light, having the PCM scanned will give you direction as to what might be causing it. Whenever the check engine light comes on, the PCM should be scanned for stored/pending codes to get an idea of what the PCM is seeing.
Another idea on your problem could be a sticky IAC (idle air control) valve. There is another Tech Article that goes through the throttle body removal to get it good and clean. You can familiarize yourself with the tech articles available by clicking on the index link in my signature.
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