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) 0L engines will typically see

0L engines will typically see a 25-30hp/40-50ft-lbs gain

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

throttle response

combined with improved shift patterns

Additional service offerings include:

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) 0L engines will typically seeBlack 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