StrokinHarley
Full Access Member
well to make a long story short i needed my 4x4 and it wouldnt help me. I put it in 4x4High and I can hear the electric motor engage in 4wheel but the front tires wont lock in. Can anyone tell me where to start??
Question Truck wont go into 4wheel drive..HELP
- Thread starter StrokinHarley
- Start date
DaveBen
SDD Senior Member
This is a VERY COMMON problem with ESOF (Electronic Shift On the Fly). It is usually caused by a vacuum leak. Pull off both front wheels and carefully inspect the vacuum line going to the knuckle, the thing that holds the hubs. The vacuum line may have cracked or broken off of the fitting going to the hubs (they are vacuum operated).
Dave
Dave
tabdiesel
SDD Junior Member
Usually the first thing that goes that causes your truck's 4x4 not to engauge is the air hose going to each hub. You can easily see them as they sorta follow the brake lines. The hoses become cracked with age and then will not allow enough vacume to activate the hubs. You can replace them without even removing your wheels with any tubing for a few bucks from Home Depot.
