Inspection and Verification
- Verify the customer concern by operating the transmission external control.
- Visually inspect for obvious signs of mechanical and electrical damage; refer to the following chart:VISUAL INSPECTION CHART
Mechanical Electrical - Damaged Brake Shift Interlock Actuator (BSIA)
- Damaged Tow/Haul switch
- Damaged Select Shift™ switch
- Failed fuse(s):
- Body Control Module (BCM) 18 (10A)
- BCM 42 (5A)
- PCM
- Loose or damaged connections
- Damaged wiring harness
- Corroded or damaged terminals
- If the fault is not visually evident, determine the symptom. GO to SYMPTOM CHART - EXTERNAL CONTROLS, COLUMN SHIFT or GO to SYMPTOM CHART - NVH COLUMN SHIFT .