1999-2007 Classic Chevrolet Silverado 1500 4.3L, 4.8L, 5.3L and 6.0L Custom Tuning Tune Service:AutoCal Tune & Hardware [$749] Black Bear Performance offers three

Black Bear Performance offers three different levels of custom tuning service for your 2007-2008 Chevrolet Suburban 5

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Gains vary widely based on vehicle condition and modifications

Black Bear Performance offers our AutoCal custom tuning service for your 2007-2008 GMC Sierra Denali 6

1999-2007 Classic Chevrolet Silverado 1500 4.3L, 4.8L, 5.3L and 6.0L Custom Tuning Tune Service:AutoCal Tune & Hardware [$749] Black Bear Performance offers threeBlack Bear Performance offers three different levels of custom tuning service for your 1999 2007 Chevrolet Silverado 4. 3L, 4. 8L, 5. 3L and 6. 0L (Including Silverado SS!). Gains vary widely by engine type and configuration. 4. 3L engines will typically see a 10 15hp 15 20ft lbs gain 4. 8L and 5. 3L engines will typically see a 15 30hp 15 20ft lbs gain. 6. 0L will see a 25 30hp 20 25ft lbs gain on 91+ octane! Power gains, combined with improved shift