Hi there thanks it was the vacum line on the front diff

sprey wrote:does any check lights come up?.

isnt the front vaccuum operated front diff?

if so could be a faulty solenoid, broken line etc?

Hi there i have a 1995 bighorn when i go to put it into low or high 4wd it does not ingage the front wheels,
When i first turn the key on the 4wd light comes up on the dash but when i start it and put it into 4wd the light does not come on can anyone tell me wot could be rong.