1999-2000 GMC Yukon 5.7L Custom Tuning Tune Installation Option (Scan cable and Traditional tune ONLY):Unblemished PCM (<5% paint missing) [+$125] 0L will see a 25-30hp/20-25ft-lbs

0L will see a 25-30hp/20-25ft-lbs gain on 91+ octane

Exceptions can be made for extenuating circumstances

Black Bear Performance offers three different levels of custom tuning service for your 2007-2008 Chevrolet Silverado 4

2L engines can see up to 30hp on 91+ octane fuel

The 0411 PCM is a powerful and versatile upgrade for many 1996–2000 GM trucks and SUVs originally equipped with older black-box PCMs

1999-2000 GMC Yukon 5.7L Custom Tuning Tune Installation Option (Scan cable and Traditional tune ONLY):Unblemished PCM (<5% paint missing) [+$125] 0L will see a 25-30hp/20-25ft-lbsBlack 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