The slave cylinder on the 1998 Chevrolet S10 is located inside the bellhousing, which means the transmission must be removed to replace it. The slave cylinder is called a concentric slave cylinder in the 1998 model. It directly engages the clutch release bearing. If the slave cylinder fails, you won’t be able to shift the truck.
Raise the vehicle, using the floor jack, and support it on jack stands. Remove the transmission – unplug any wiring harness connectors and remove transmission lines. Unhook the linkage. Support the transmission on the floor jack and remove the bellhousing bolts. Pull the transmission back, away from the engine (see Resources for more detailed instruction).
Remove the two bolts that hold the concentric slave cylinder on the transmission and input shaft, using the appropriate socket. Pull the slave cylinder off the input shaft. Take note of the bleed screw and coupling positions.
Install the slave cylinder on the input shaft, making sure the bleed screw and coupling are properly positions. Install and tighten the two bolts to 80 inch-pounds of torque. Reinstall the transmission. Leave the vehicle on the jack stands. Fill the master cylinder with DOT 3 brake fluid.
Have a helper push the clutch pedal in and hold it to the floor. Open the bleeder screw on the slave cylinder. Close the bleeder screw. Instruct the helper to release the clutch pedal. Repeat the process until you cannot hear air pushing through the system. Check the fluid level in the master cylinder every three to four pushes, and top off as necessary.
Lower the vehicle and test the clutch. If the clutch does not release properly, remove the cap from the master cylinder and pump the clutch pedal fast for 30 seconds. Stop and let the air escape. Top off the master cylinder as needed. Repeat the bleeding procedure. Top off the master cylinder as needed.
Do not let the master cylinder run out of fluid while you are bleeding the clutch – you will have to start the process all over again, as air will get into the system. Never release the clutch pedal while the bleeder screw is open, or else you will allow air into the system.