Traditional Tune Service Tune Installation Option:Blemished PCM (>5% paint missing) [+$75] - 1996-2000 4.3L 5.0L 5.7L 7.4L Black Bear Performance offers three

Black Bear Performance offers three different levels of custom tuning for your 1999-2000 Chevrolet Express 4

20-25ft-lbs of torque gains are common out of this platform

20-25hp gains are common with 30-35ft-lbs of torque

7L up to 30-35hp on a 7

Email file(s) to be reviewed

Traditional Tune Service Tune Installation Option:Blemished PCM (>5% paint missing) [+$75] - 1996-2000 4.3L 5.0L 5.7L 7.4L Black Bear Performance offers threeOur traditional tune is our custom mail order tune that does not involve data logging. The tune will provide horsepower and torque increases, improved throttle response and shifting, and overall driveability. Contact us for an estimated range of gains for your vehicle type. Contact us for our mail in form if you would like to send in your control module(s) to be tuned. Supported Vehicles: Most 1996 to 2013 4 speed GMC Chevrolet gas vehicles with 4.