My speedometer does not work at all. What do I look for as the problem on 2005 Chevrolet Monte Carlo

I have a 2005 Monte Carlo. V6, Auto. My speedometer does not work.

Asked by for the 2005 Chevrolet Monte Carlo
Scan test needed to check vehicle speed sensor operation and instrumentation.
124-124-902-01=680976758976987
Incorrect!