Diagnostic Test

CHECK FOR AN ACTIVE DTC
NOTE:
Diagnose and repair any Lost Communication or CAN C BUS DTCs before continuing with this diagnostic procedure.
1. Ignition on, engine not running.
2. With a scan tool, select View DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
CHECK OTHER MODULES FOR LOST SPEED CONTROL MESSAGE DTCS
1. With a scan tool, check if any other modules have a Lost Speed Control Message DTC present.
  Were any Lost Speed Control DTCs present in any other modules?
  
  Yes
  - Replace and program the Body Control Module (BCM) in accordance with the Service Information. Refer to MODULE, BODY CONTROL (BCM), REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL (PCM), REMOVAL .
  - Perform the PCM VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .