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Technique for changing the clutch starter safety switch on a 1980

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Technique for changing the clutch starter safety switch on a 1980

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Old 08-12-2018, 08:09 PM
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mark79,80
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Default Technique for changing the clutch starter safety switch on a 1980

I spent a frustrating and wasted afternoon trying to change the switch. I removed the seat, cover under the steering column and the left side AC duct.
I can clearly see the switch when using a mirror pointed up at the clutch pedal. However, when I stick my head up under the dash the brake light switch, blocks most of the view of the clutch switch. If I hold the clutch pedal down I can see the clutch switch. Is there a way to hold it down from under the car without doing any damage?

I could not find any mention of how to change the clutch switch in the factory service manual, unless I missed it?

I was going to look in the AIM to see if there is a picture.

Any suggestions on how to change the switch?
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Old 08-12-2018, 10:30 PM
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Rods 79
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When I changed my switch out it was mounted with a 10mm metal screw. It's a tight fit to get up there to get it out and back in.

Pic from 1979 Assembly Manual, pg 366
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Old 08-12-2018, 11:19 PM
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I have not changed one on an 80 but had the misfortune to change 4 or 5 of them on early C3's. I did my 69 recently with the seat out and on my back. I used a small 1/4" ratchet with a 2" extension. I used the extension with socket to install the fastener with my fingers then attached the small ratchet to tighten. I used long 12" needle nose pliers to install the tiny clip which is really easy to drop and lose as it's so small but with the long pliers it makes it easy to reach up and install on the rod. You might also try a little dab of silicone or rtv on the fastener to hold it in the bracket until you can get it positioned and started in the hole.

Last edited by CanadaGrant; 08-13-2018 at 12:48 AM.
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Old 08-13-2018, 07:55 AM
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I looked at the AIM last evening and saw Rod 79ís picture. I also saw another picture of the bracket that holds the brake light switch. Two screws hold it in place, and wonder if anyone has removed it to gain access to the clutch switch?
Is there a way to hold the clutch pedal down from underneath the car without damage?
Thanks for the replies.
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Old 08-13-2018, 09:20 AM
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BlackC3vette
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Originally Posted by mark79,80 View Post
I looked at the AIM last evening and saw Rod 79ís picture. I also saw another picture of the bracket that holds the brake light switch. Two screws hold it in place, and wonder if anyone has removed it to gain access to the clutch switch?
Is there a way to hold the clutch pedal down from underneath the car without damage?
Thanks for the replies.
The image in my 80 AIM is the same as the one from the 79.
To get the clutch pedal to move, I would just disconnect the linkage/spring from the clutch fork
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Old 08-13-2018, 11:28 AM
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Can an you explain where you disconnect the clutch pedal. Is that under the car or under the dash? Once disconnected will the clutch pedal stay where pushed? Have never worked on the clutch linkage so need basic instruction.

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Originally Posted by BlackC3vette View Post



The image in my 80 AIM is the same as the one from the 79.
To get the clutch pedal to move, I would just disconnect the linkage/spring from the clutch fork
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Old 08-13-2018, 12:51 PM
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The linkage is under the hood/car, not under the dash. Open the hood and look down below the brake power booster. There is a cross shaft that connects to the chassis and across to the engine block. You could disconnect it here. Don't lose the spring clip. There is also a return spring connected to the linkage. This should allow you to move the pedal where you want it.
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Old 08-13-2018, 05:47 PM
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If I disconnect the spring can I move the clutch pedal where I would like? Or does the spring clip and cross shaft have to be disconnected as well?

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Originally Posted by BlackC3vette View Post

The linkage is under the hood/car, not under the dash. Open the hood and look down below the brake power booster. There is a cross shaft that connects to the chassis and across to the engine block. You could disconnect it here. Don't lose the spring clip. There is also a return spring connected to the linkage. This should allow you to move the pedal where you want it.
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Old 08-13-2018, 06:36 PM
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Pull out the G clip at the yellow arrow, pull the swivel nut out in the direction of the green arrow. don't lose the G clip and also disconnect the spring. Hope it helps.
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