Would like to be able to have capability to read DTCs, reset codes, and do minor fixes. Do not want to modify the stock settings of the truck. Would appreciate input from forum users regarding what DTC Readers and Maint Manual that they use. Do not want the pricey DTC Readers that also tune (e.g., Predator, etc), just the basic reader please. Thanks in advance for input.

Acctron scanner at any parts store..scans, deletes, etc. Priced from 30-120.

As for manuals...get the Duramax Shop Manuals, they run about 120, but well worth it.