Chevrolet Full-size Cars 1968-1978 Repair Guide

Speedometer Cable

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REMOVAL & INSTALLATION





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Fig. Fig. 1 Depress the retaining ring to disengage the speedometer cable



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Fig. Fig. 2 Use pliers to pull the speedometer cable out of the cable housing



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Fig. Fig. 3 If necessary, unscrew the speedometer cable from the transmission

Although not necessary, removing the instrument cluster will give better access to the speedometer cable.

  1. Reach behind the instrument cluster and push the speedometer cable casing toward the speedometer while depressing the retaining spring on the back of the instrument cluster case. Once the retaining spring has released, hold it in while pulling outward on the casing to disconnect the casing from the speedometer.
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  3. Remove the cable casing sealing plug from the dash panel. Then, pull the casing down from behind the dash and remove the cable.
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If the vehicle is equipped with cruise control, the speedometer cable can be disconnected at the transducer which is mounted on the right fender inner panel.

  1. If the vehicle is not equipped with cruise control and the cable is broken and cannot be entirely removed from the top, support the vehicle securely, and then unscrew the cable casing connector at the transmission. Pull the bottom part of the cable out, and then screw the connector back onto the transmission.
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  3. Lubricate the new cable with a speedometer cable grease. Insert it into the casing until it bottoms. Push inward while rotating it until the square portion at the bottom engages with the coupling in the transmission or cruise control transducer, permitting the cable to move in another inch or so. Then, reconnect the cable casing to the speedometer and install the sealing plug into the dash panel.
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