Engine light with no code?

2022 CHEVROLET SILVERADO
46,000 MILES • TURBO • 4WD • AUTOMATIC
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STEPHOPEY
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2022 Deisel Trailboss. Battery went dead, took it into the dealership and it took 1.5 days to recharge it. They said that they cleared all of the codes that were thrown because of the dead battery. 2 days later the check engine light came back on but when it is hooked up to diagnostics not code is found.
We thought maybe it was the fuel filter so we changed that, but light is still on. Thought maybe it was bad fuel so put in new fuel but light is still on.
How do I find out what is wrong when it does not give a code? Is it possible that the engine light itself is malfunctioning?
Jun 24, 2024 at 8:51 AM
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STRAILER
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To me it sounds like it could be a glitch in the computer system, I would disconnect the battery overnight and then reconnect it, please try your scanner with another car to make sure it works, and lastly the computer might need an update which you can get at the dealer. Also, try to clear the codes even though there are none. Please let me know what happens I am interested.
Jun 24, 2024 at 4:27 PM
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STEPHOPEY
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I ended up taking it back into the dealer. Turns out the reason the battery went dead the first time is because it was trying to do an update, but the battery died before it could finish. The dealer didn't bother to finish the update when it was in the shop previously. Update has been done finally but now the front facing camera does not work. Had to order a replacement.
Thank you for your advice as it was helpful.
Jul 7, 2024 at 10:44 AM
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STRAILER
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Yep, updates can be tricky especially when the battery goes dead. Seems kind of a new truck for this kind of problem though. Did they say why the battery when dead?
Jul 8, 2024 at 9:42 AM
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STEPHOPEY
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He said i the update itself was what drained the battery when it was trying to download/install.
Jul 8, 2024 at 10:34 AM
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STRAILER
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The reason I ask is it doesn't take that long to do the update the battery should have been okay. I would install a new battery to be safe. Here is how, check out the images (below). Let us know if you need anything else.
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Jul 8, 2024 at 10:43 AM
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STEPHOPEY
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Thank you for all of your help. You've been great!
Jul 8, 2024 at 12:45 PM
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STRAILER
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You are welcome, please use 2CarPros anytime we are here to help.
Jul 9, 2024 at 9:17 AM