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Old 05-13-2013, 04:42 PM
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mustangtexas mustangtexas is offline
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Join Date: Sep 2012
Boat: 2005 MasterCraft Prostar 197 & 1989 190
Location: North Texas/St. Germain, WI
Posts: 719
Based on the Year and Miles you stated are on your Yukon take it to a dealership as it is under warranty. Be careful, you run a very high risk of voiding factory powertrain warranty with any performance reprogramming you have done by a third party or yourself.
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