Pinpoint Test D: The Speedometer Is Inoperative

D1 PERFORM THE IPC (INSTRUMENT PANEL CLUSTER) SELF-TEST
- Ignition ON.
- Using a diagnostic scan tool, perform the IPC self-test.
- Check for recorded Diagnostic Trouble Codes (DTCs) from the IPC self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?
- Yes : REFER to DTC CHART: IPC .
- No : GO to D2
D2 PERFORM THE BCM (BODY CONTROL MODULE) SELF-TEST
- Using a diagnostic scan tool, perform the BCM self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?
- Yes : REFER to: BODY CONTROL MODULE (BCM) .
- No : GO to D3
D3 PERFORM THE GWM (GATEWAY MODULE A) SELF-TEST
- Using a diagnostic scan tool, perform the GWM self-test.
Are any Diagnostic Trouble Codes (DTCs) recorded?
- Yes : REFER to: COMMUNICATIONS NETWORK .
- No : GO to D4
D4 PERFORM THE SPEEDOMETER ACTIVE COMMAND USING A DIAGNOSTIC SCAN TOOL
- Using a diagnostic scan tool, view the IPC Parameter Identifications (PIDs).
- Select the IPC speedometer (SPDOMETER) Parameter Identification (PID).
- Command the speedometer on and off while monitoring the speedometer.
Does the speed begin at 0 km/h (0 mph) move to 193 km/h (120 mph) and return to 0 km/h (0 mph)?
- Yes : DIAGNOSE all ABS module Diagnostic Trouble Codes (DTCs).
  REFER to: ANTI-LOCK BRAKE SYSTEM (ABS) AND STABILITY CONTROL .
- No : INSTALL a new IPC .
  REFER to: INSTRUMENT PANEL CLUSTER (IPC) .