1. Remove the crank handle: The crank handle itself is usually held on by a small retaining clip or a small screw. Carefully inspect the crank handle. You'll likely see a small hole or slot near the base of the handle. Use a small flat-head screwdriver or a specialized tool (if needed) to pry or push this clip/screw out. The crank handle should then pull off.
2. Remove the inner door panel: You'll need to access the window regulator mechanism to remove the crank from the shaft. This requires removing the inner door panel. This involves removing several screws and possibly some plastic clips. Consult a repair manual specific to your 1999 Chevy S10 to identify the location of these fasteners. Be gentle to avoid breaking any clips. There are usually screws located around the door handle, armrest, and possibly near the bottom of the panel.
3. Disconnect the crank from the regulator: Once the door panel is removed, you'll see the window regulator mechanism. The window crank is connected to a shaft that is part of this mechanism. You may find a small retaining clip or nut securing the crank to the shaft. Carefully remove this fastener. Sometimes the crank just pulls off after removing the clip or nut.
4. Reassembly (if needed): If you're reinstalling a new crank, follow the steps in reverse order, ensuring everything is properly seated and fastened.
Important Considerations:
* Repair Manual: A repair manual specific to your 1999 Chevy S10 is highly recommended. This will provide diagrams and detailed instructions for removing the door panel and accessing the window regulator. You can find these online or at auto parts stores.
* Plastic Trim Clips: Be very careful when removing the door panel. The plastic trim clips are fragile and can easily break. It's a good idea to have some replacement clips on hand.
* Tools: You'll likely need a small flat-head screwdriver, possibly a Phillips head screwdriver, and possibly a small socket or wrench depending on how the crank is attached.
Without a visual aid (pictures or a repair manual), providing more precise instructions is difficult. Failing to follow the proper steps could lead to damage to your door panel or the window regulator mechanism. If you're not comfortable with this repair, taking your vehicle to a qualified mechanic is always an option.