I have a 2003 5.3 what year 4l60e or 4l80e
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Join Date: Sep 2014
Location: alburnett, iowa
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I would go for something out of Silverado 99-07 or express van. U didn't say what u have with the 5.3 but 03 motor probably is DBW. So therefore u will need tac box and gas pedal. If u want heavy duty u probably want the 4L80E. It is physically bigger than 4L60E as well.