Speedometer Gauge Not Operating Properly

Tests 1 - 3:

Tests 4 - 5:

SYMPTOM
SPEEDOMETER GAUGE NOT OPERATING PROPERLY

POSSIBLE CAUSES
- Attempt to communicate with the PCM
- Engine trouble codes
- Instrument cluster self test
- Observe the vehicle speed display in the PCM
- Observe the vehicle speed display in the instrument cluster
- Powertrain control module