If you're talking about your 96, just go to Autozone and they will read it for you for free. There are cheap code readers on Ebay for $29-$49 but why bother even spending that. If you plan on spending any money at all I would put it towards some form of actual scanner that shows real time data and can show codes. If you have a laptop, there are several programs for reading the computer but you need a cable to plug into the OBDII port.
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69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
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