Possible Causes
| Possible Causes |
|---|
| TRAILER BACKUP LAMP DRIVER CIRCUIT OPEN |
| TRAILER TOW MODULE (TTM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to STANDARD PROCEDURE .
| Possible Causes |
|---|
| TRAILER BACKUP LAMP DRIVER CIRCUIT OPEN |
| TRAILER TOW MODULE (TTM) |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to STANDARD PROCEDURE .