2002-2006 Chevrolet Avalanche 5.3L and 8.1L Custom Tuning Tune Service:Traditional [$355] they must be evaluated by

they must be evaluated by our tuner prior to committing to any services

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

Other improvements range from improved idle smoothness to better shift performance

0L engines will typically see a 25-30hp/40-50ft-lbs gain

This service disables the Passlock System (otherwise known as Vehicle Anti-Theft System (VATS) or Theft Deterrent) within the PCM on most 1998-2013 GM Trucks and SUVs

2002-2006 Chevrolet Avalanche 5.3L and 8.1L Custom Tuning Tune Service:Traditional [$355] they must be evaluated byBlack 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