1999-2007 Classic GMC Sierra 1500 4.3L, 4.8L, 5.3L and 6.0L Custom Tuning Tune Service:Traditional [$325] Black Bear Performance offers tuning

Black Bear Performance offers tuning for the 0411 PCM Swap

We use EFILive V1 and V2 scan cables to collect data specific to your vehicle

AFM Delete (2010+)

improved towing and improved throttle response

1999-2007 Classic GMC Sierra 1500 4.3L, 4.8L, 5.3L and 6.0L Custom Tuning Tune Service:Traditional [$325] Black Bear Performance offers tuningBlack Bear Performance offers three different levels of custom tuning service for your 1999 2007 GMC Sierra 4. 3L, 4. 8L, 5. 3L and 6. 0L (Including Sierra Denali!). Gains vary widely by engine type and configuration. 4. 3L engines will typically see a 10 15hp gain 4. 8L and 5. 3L engines will typically see a 15 25hp gain. 6. 0L will see a 25 30hp gain on 91+ octane! Power gains, combined with improved shift patterns, towing capabilities, throttle