Error code meanings

[t.rider.013]

2004.5 ccsb. So I just bought some 30 over new injectors from a local shop. Haven’t installed them yet. Found my old Wi-Fi code reader, plugged it in and found some codes I have zero idea what they are or what they mean.
B2725
U1041
U1016
U1000
P0670

Please explain what these mean. Thank you


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[Ron Nielson]

This website publishes Bulletins issued by GM to tell the techs what to look for based on DTC codes. Look your up here and see what info you can gain from them.

https://www.dtcdecode.com/Chevrolet

If you want definitions, just google 'Duramax dtc Uxxx' substituting your actual code

 

[Bdsankey]

Have you tried the easiest method of using a quick google search to simply see what the codes mean? This forum is all for helping people out but a little bit of initial legwork goes a long way.