Reverse Gear Mis-Shift Preventing Mechanism

WARNING: This page is about a different car, the 2008 Pontiac Wave. However, it is still accessible from the selected car via links, so may be relevant.

It prevents the gear from directly being shifted from 5th to reverse when shifting to reverse from 5th. Shift to the reverse in neutral position to prevent the shift cam from being interfered to the shift guide bolt.

Fig 1: Shifting

Courtesy of GENERAL MOTORS CORP.

In case of shifting to 5th gear, shift and select shaft rotates to right that shift cam aparts from guide bolt and moves upwards by returning spring. Therefore, shifting to reverse in this condition is impossible because of interference of guide bolt.

Fig 2: Shift Cam Left

Courtesy of GENERAL MOTORS CORP.

When shifting to reverse from neutral position between 5th and reverse, shift cam rotates to left and shifting is possible.

Fig 3: Shift Cam Right

Courtesy of GENERAL MOTORS CORP.