2002-2006 Chevrolet Avalanche 5.3L and 8.1L Custom Tuning Tune Service:Traditional [$355] Compatible with thousands of years

Compatible with thousands of years

Manual transmission vehicles will see a big improvement in shift speed and feel

Other improvements range from improved idle smoothness to better shift performance

Black Bear Performance offers our AutoCal custom tuning service for your 2007-2008 GMC Sierra Denali 6

2002-2006 Chevrolet Avalanche 5.3L and 8.1L Custom Tuning Tune Service:Traditional [$355] Compatible with thousands of yearsBlack Bear Performance offers three different levels of custom tuning service for your 2002 2006 Chevrolet Avalanche 5. 3L and 8. 1L. 20 25hp, 15 20ft lbs of torque gains are common out of the 5. 3L variation and 8. 1L engines can see a monster 50+ ft lbs of torque. Combine that with improved shift patterns, towing capabilities, throttle response and even fuel economy in many cases and you'll have what feels like a whole new vehicle! Due to frequent