There is a safety lock out that will not allow you to put the truck into drive on some models not even move the shifter out of park.
There should be an override around the shifter with a small cover that you remove and use your key to disengage the safety lock.
There may be some variances in the safety lock out that they are generally time to the brake pedal.
Push on the brake pedal and see if you can hear something moving in and around the shifter. Also look around the brake pedal for a linkage arm which can be worn or out of adjustment causing this problem.
I hope this helps.
Saturday, January 22nd, 2011 AT 5:29 AM