Engine uses 3 quarts oil between required oil changes. #2 problem 4wd switch if i use auto 4wd . 4wd does not engage and wont switch out of auto .i was told at dealer ship just don't use auto 4wd it has always been a problem
Tl* the contact owns a 2012 (na) chevrolet silverado 1500. the contact stated that the vehicle surged forward and backward after starting. the failure occurred whenever the vehicle was started in cold weather. in addition, while driving at various speeds, the transmission would shift with an extremely loud clunking noise. the vehicle was not diagnosed or repaired. the manufacturer was not notified of the failure. the approximate failure mileage was 12.