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Home >> Chevrolet >> 1987 >> Corvette 2D Convertible, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Diagnosis - 700-R4 >> Description >> TCC Control Components >> 3rd & 4th Gear Switch
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3rd & 4th Gear Switch

The 3rd and 4th gear switches prevent TCC operation until direct drive (3rd and/or 4th gear) is obtained.