1996-1997 GMC Sierra 4.3L, 5.0L, 5.7L and 7.4L Custom Tuning Tune Installation Option (Scan cable and Traditional tune ONLY):Unblemished PCM (<5% paint missing) [+$125] No free air sensor calibration

No free air sensor calibration required - ever

We commonly see gains of 15-30hp

Black Bear Performance offers three different levels of custom tuning for your 1999-2000 GMC Yukon 5

CAMSHAFTS: If you have or plan on an aftermarket cam swap

Upgrade your GM vehicle’s performance and tuning capability with a Black Bear Performance 0411 PCM Swap Tune

1996-1997 GMC Sierra 4.3L, 5.0L, 5.7L and 7.4L Custom Tuning Tune Installation Option (Scan cable and Traditional tune ONLY):Unblemished PCM (<5% paint missing) [+$125] No free air sensor calibrationBlack Bear Performance offers our traditional custom tuning service for your 1996 1997 GMC Sierra. Gains vary widely based on engine size but can vary from 10 15hp on a 4. 3L up to 30 35hp on a 7. 4L. From bone stock to heavily modified, we can help your engine perform as optimally as possible. Other improvements range from improved idle smoothness to better automatic AND manual shift performance, improved throttle response and improved mileage in