John, is this an Hemi 5.7 truck 2500, and the ETC, MIL lights flash or stay on, then you have a sofware issiue with the PCM, DTC code will probably be, throltle reached forced limit, this can be only be fixed at your Dodge dealer, common problem 2003-2005 model years, also Tsb requires soft ware update to PCM, might under warranty depending on year of your truck. GOOD LUCK. RDJRP
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