BBB-503-0158. BBB Industries Reman Steering Gear BBB-503... STEERING GEAR - REMAN Steering Gear Box - 2000 Chevrolet C6500 Kodiak | O'Reilly Auto Parts Gear Box Steering Steering Gear Box - 2005 GMC Yukon | O'Reilly Auto Parts Clock Spring Steering Wheel Normally Closed]- The original state of temperature control switch contact is closed,and open when the temperature sensing exceeds the rated temperature