Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Repair and Diagnosis: Transmission: Clutches: Description
Chevrolet and GMC vehicles incorporate two types of clutches. Borg & Beck type clutches can be identified by the use of three release levers to provide pressure plate actuation, and by coil springs which provide pressure plate tension. Diaphragm Spring type clutches utilize a single, slotted diaphragm type spring to provide both pressure plate actuation and tension. Both hydraulic and mechanical linkage are used for clutch control from 1965-70. Only mechanical linkage is used after 1970. Removal and installation procedures, overhaul procedures, and adjustments are the same for both Chevrolet and GMC during a given year, and are similar for both types of clutches used.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.