How to Adjust the Clutch on a 1997 GMC Sonoma

by Mike Aguilar

Problems with your 1997 GMC Sonoma manual transmission are usually clutch-related. If the truck isn't accelerating the way it used to, or you're hearing a grinding sound as soon as you start the truck, you need to change the clutch disc and pressure plate. If pressing the clutch pedal does not fully engage the clutch, either the fluid line is leaking or there is air in the system. Being hydraulic, there is no actual adjustment for the clutch as in a mechanical clutch.

Step 1

Verify that the fluid level is correct in the clutch master cylinder reservoir. If the level is low, wipe the cover before removing it, and fill the reservoir to the proper level. Replace the cap. Facing the engine compartment, the clutch master is to the right and above the steering column, below the brake master cylinder.

Step 2

Pump the clutch pedal rapidly a number of times. Inspect the clutch fluid lines from the master to the slave on the transmission. Pay particular attention to the quick-connect joints.

Step 3

Replace leaking lines by pressing the white sleeve on the connectors on opposite sides and pulling the connector apart. The new line snaps in place.

Step 4

Place the drain pan under the clutch slave cylinder on the side of the transmission. Have your helper press the clutch pedal as far as it goes at least five times, and hold it down. Turn the bleeder screw valve counterclockwise using a flare nut wrench. Watch for air bubbles. Tighten the bleeder valve, and have the helper repeat this process until no more air bubbles are seen. Refill the reservoir as needed during and after this process.

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