1999-2000 GMC Yukon 5.7L Custom Tuning Tune Service:Traditional [$355] Using the scan cable

Using the scan cable

Enhanced Driveability: Expect better throttle response

EFILive is the best option for you

With years of experience in custom GM tuning

1999-2000 GMC Yukon 5.7L Custom Tuning Tune Service:Traditional [$355] Using the scan cableBlack Bear Performance offers three different levels of custom tuning for your 1999 2000 GMC Yukon 5. 7L. From bone stock to heavily modified, we can help your engine perform as optimally as possible. We tend to see power gains in the 15 20hp 20 25ft lbs range and 1 2mpg improvement, depending on vehicle condition and configuration. Other improvements range from improved idle smoothness to better shift performance, improved towing and improved