2001-2004 GMC Sonoma / S15 Jimmy 4.3L Custom Tuning Tune Service:Scan Cable [$815] ($400 Refundable Deposit included) Combine that with improved shift

Combine that with improved shift patterns (2015-2016)

Other improvements range from improved idle smoothness to better shift performance

Black Bear Performance offers our AutoCal custom tuning service for your 2008-2009 Hummer H2 6

Full 2007+ GM 6 and 8 speed transmission tuning support (2017+ 8 or 10 speed transmissions excluded)

2001-2004 GMC Sonoma / S15 Jimmy 4.3L Custom Tuning Tune Service:Scan Cable [$815] ($400 Refundable Deposit included) Combine that with improved shiftBlack Bear Performance offers three different levels of custom tuning service for your 2001 2004 GMC Sonoma or S15 Blazer 4. 3L. 10 15hp, 15 20ft lbs of torque gains are common out of this 4. 3L powerhouse. Combine that with improved shift patterns, response and even fuel economy in many cases and you'll have what feels like a whole new vehicle! Additional service offerings include: Speed and Rev Limiter Increase Efan enable Torque Management