I'm sure it's possible, not sure what it would cost? 8 in not necessarily standard on 17's. There are both versions on 17's but I'm sure the parts are available. Be prepared to wait as some of the parts are being pulled from the line. I'm still waiting for my 4th headlight assembly. GM seems to be unable to figure why I get a warning to service turn signal.......so we wait.Since the 8" cluster is standard equipment on the 17 SLT trim, would the dealer possibly swap the 4.2" for an 8" cluster on my 2016 SLT?
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