Timing belt probs maybe

Hey guys i just got my timing belt done, the truck runs great but after it was done there is a vibration in the engine and a winding sound. any ideas of what it could be?

check your crankshaft pulley bolt, if its not to spec it will walk off and tension itself causing a whining sound.

basically the harmonic balancer

Hard to fix? and how hard is it?

not hard at all , 14mm socket on your crankshaft, 12mm deep socket on the 4 bolds that hold it to you crank timing gear, check those bolts, its the pulley on the bottom

sry its a 19 mm sicket on the cranks

Ok man thanks for ur time n help!