CEL illuminated but known good code reader shows no DTC stored or pending?

2010 CHEVROLET EQUINOX
120,000 MILES • 2.4L • 4 CYL • 2WD • AUTOMATIC
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ALEX GATLIN
Hi guys. I bought this Chevy Equinox for $600 from a friend who said he was having a hard time getting the EVAP monitor to set so he could get it smogged. I am running into this issue with the CEL on with no DTC being set. I was wondering if I could get a pin out for the PCM connectors to test for power and ground at the correct pins. Also, I would like to hear what you guys think is going on here. Do you think the PCM might need to be re-flashed? The vehicle, for what it is, pulls like a freight train. It has zero drivability issues and runs smoothly with power in all gears. I just can't see the PCM being at fault with how well the vehicle runs. Again, thank you, you guys rock!
Jan 3, 2025 at 10:06 PM
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STRAILER
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Hey Alex, you are correct, the if the check engine light is on with no codes it needs to be re-flashed, this is probably why the monitors will not set as well. Let me know what happens once the flash is done.
Jan 4, 2025 at 11:46 AM
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