The Speedometer on my truck won't move from 0 truck moves fine how can i fix it? on 2005 GMC Sierra 1500

i use it to work and travel with out a problem but the speedometer arrow won't move from 0, i use my cellphone speedometer app to know how fast i am going, what can be wrong?

by in Coalinga, CA on August 12, 2013
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
1 answer 1 comment
ANSWER by , August 12, 2013
poss inst cluster is bad,very common on GM products. the cost to repair is approx 450.00
COMMENT by , August 12, 2013
Tks.. guess I take my truck to the shop...