2010-2020 Chevrolet Express 4.3L, 4.8, 5.3L, and 6.0L Custom Tuning Tune Service:AutoCal Tune & Hardware [$749] This option requires sending in

This option requires sending in your ECM and TCM from the vehicle to be tuned

then our AutoCal is just what you have been looking for

Gains vary widely based on engine size but can vary from 15-20hp on a 5

Black Bear Performance offers our traditional custom tuning service for your 1996-1997 GMC Yukon

whichever comes first

2010-2020 Chevrolet Express 4.3L, 4.8, 5.3L, and 6.0L Custom Tuning Tune Service:AutoCal Tune & Hardware [$749] This option requires sending inBlack Bear Performance offers our AutoCal custom tuning service for your 2010 2020 Chevrolet Express 4. 3L, 4. 8L, 5. 3L and 6. 0L. Gains vary widely by engine type and configuration. 4. 3L 5. 3L engines will typically see a 10 25hp 15 20ft lbs gain (octane dependent) 6. 0L engines will typically see a 20 25hp 25 30ft lbs on (octane dependent) Combine that with improved shift patterns, towing capabilities, throttle response and even fuel economy in