GM Corvette 1963-1982 Repair Guide

Detent Switch



1968-72 Turbo Hydra-Matic 400 Transmissions

See Figure 1

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Fig. Fig. 1: View of the denent switch adjustment-1968-72 Turbo Hydra-Matic transmissions

The detent switch is located on the carburetor.

  1. Pull the detent switch driver rearward until the hole in the switch body aligns with the hole in the driver.
  3. Insert a 0.092 in. pin through the aligned holes to a depth of 0.10 in. to hold the driver in position.
  5. Loosen the switch mounting bolt.
  7. With the throttle held in wide open position, move the switch forward until the driver contacts the accelerator lever.
  9. Tighten the mounting bolt and remove the pin.

1973-77 Turbo Hydra-Matic 400 Transmissions

The switch is located over the accelerator pedal. After installing a new switch, adjustment is made by pressing the plunger in. This presets the switch and it will self-adjust the first time the pedal is fully depressed.