Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
OK. If you clear codes with a scanner,you should not have to do anything else because all performance strategies are maintained. If the light comes on after one trip (Described below), than there is still a problem with the EVAP leak.
Perform computer relearn procedure as follows: 1 Trip or cycle consists ofstarting the vehicle and allow it to warm up. Place the vehicle in Drive with foot on brake and let idle for 1 min. Take vehicle for a drive accellerating at normal throttle position 20-50% of full throttle,until it shifts into top gear.Cruise at light to medium throttle.Decelerate to a stop allowing the vehicle to downshift and use brakes normally.Process may be repeated as necessary for the computer to relearn all performance strategies.May take up to 40 trips for a complete re-learn.