* 2004 Chevrolet CCSB Z-71 5.3L * G80, 3.73's * Black Bear Autocal 91 oct tune * Magnaflow 3" SI/SO 14" case * Airaid M.I.T. * OEM airbox with open air modification * Color matched grille & lower valence * Blackened Tail Lights * SuperBright LEDs in brake lights & reverse lights *
In the garage to be installed: 799 heads, Dyna-Tech long tube headers, Corvette servo, 2" lowering shackles, 2wd u-bolts & bumpstops
the dtc's could be related to the tuning or not. if it wasn't mentioned, then there could be a code that needs to be disabled.
before any retunes are done, get those codes read and lmk what they are, that'll determine the next step.
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'94 Chevy Truck: 8.9 et, 408 twins