2009-2013 GMC Sierra 1500 4.8L, 5.3L, 6.0L and 6.2L Custom Tuning Tune Service:Transmission Tuning Only [$525] ($400 Deposit Included) Please contact us for our

Please contact us for our mail-in form to include with your PCM

3L up to 30-35hp on a 7

combined with improved shift patterns

Using that data

2009-2013 GMC Sierra 1500 4.8L, 5.3L, 6.0L and 6.2L Custom Tuning Tune Service:Transmission Tuning Only [$525] ($400 Deposit Included) Please contact us for ourBlack Bear Performance offers our AutoCal custom tuning service for your 2009 2013 GMC Sierra 4. 8L, 5. 3L, 6. 0L and 6. 2L. Gains vary widely by engine type and configuration. 4. 8L and 5. 3L engines will typically see a 15 30hp 15 20ft lbs gain. 6. 0L engines will typically see a 25 30hp 40 50ft lbs gain. 6. 2L engines will typically see a 15 20hp 20 25ft lbs on 91+ octane. Combine that with improved shift patterns, towing capabilities, throttle