pete ... 4/16/2010
2005 Chevrolet Avalanche 1500 Z71 8 Cyl 5.3L
Transmissions & Drivetrains
vehicle will sometimes not shift from 2 to 4 wheel drive and service four wheel drive will appear in message center
What have you done so far to fix your vehicle? Did you diagnose your vehicle with a scan tool to determine if there’s something wrong with the electrical controls or sensor in your transmission?