Tools You'll Need:
* Socket wrench set (metric): You'll likely need various sizes, including probably a 13mm, 15mm, and possibly a 10mm or 8mm.
* Ratchet and extensions: To reach those hard-to-reach bolts.
* Wrench (possibly): Depending on bolt accessibility.
* Jack and jack stands: Essential for safety. Never work under a vehicle supported only by a jack.
* Wheel chocks: Place these on the wheels opposite the jacked-up side.
* Wire brush: To clean battery terminals and starter connections.
* New starter motor: Make sure you get the correct one for your specific 1989 S-10 Blazer engine (e.g., 2.5L, 2.8L, 4.3L).
* Penetrating oil (like PB Blaster): This can help loosen rusted or stubborn bolts. Apply liberally and let it sit for a while before attempting to remove them.
* Gloves and safety glasses: Always protect yourself.
Steps:
1. Safety First: Disconnect the negative battery cable. Then, jack up the front of the Blazer and securely support it with jack stands. Chock the wheels.
2. Access the Starter: The starter is typically located on the passenger side of the engine, near the bell housing (the part of the transmission that connects to the engine). You might need to remove some components to access it fully, depending on your specific engine and accessories. This might include:
* Air cleaner housing: Often needs to be moved or removed.
* Exhaust components (possibly): In some cases, exhaust pipes or heat shields may need to be moved out of the way. Be careful not to burn yourself.
* Wiring harness: Carefully move any wiring harnesses to gain better access. Don't pull on the wires too hard.
3. Remove the Starter: Once you have good access:
* Disconnect the electrical connections: There will be at least two large cables (positive and negative) connected to the starter solenoid. Use a wrench to loosen the nuts holding the cables in place. Take note of where each cable goes. Clean the cable terminals with a wire brush.
* Remove the mounting bolts: These are typically two bolts holding the starter to the engine block. Spray penetrating oil on them beforehand if they're difficult to turn. Use your sockets and ratchet (with extensions if needed) to remove these bolts.
4. Install the New Starter:
* Clean mounting surfaces: Clean any rust or debris from the engine block where the starter mounts.
* Install the new starter: Carefully align the starter and insert the mounting bolts. Tighten them securely.
* Reconnect the electrical connections: Attach the positive and negative cables to the new starter, ensuring they're properly secured.
5. Reassembly: Carefully put everything back together, making sure all components are correctly reattached and secured.
6. Reconnecting the Battery: Reconnect the negative battery cable.
7. Test the Starter: Attempt to start the vehicle.
Important Considerations:
* Consult a Repair Manual: A repair manual specific to your 1989 Chevrolet S-10 Blazer is highly recommended. It will provide detailed diagrams and instructions specific to your vehicle's make and model.
* Engine Size: The location and accessibility of the starter can vary slightly depending on the engine size (2.5L, 2.8L, or 4.3L).
* Photography: Take photos of the process as you go. This is invaluable if you have trouble remembering how things went back together.
* Professional Help: If you're uncomfortable with any of these steps, it's always best to take your vehicle to a qualified mechanic.
This guide provides a general overview. The exact procedure may vary slightly depending on your vehicle's configuration. Always prioritize safety and consult a repair manual for detailed, vehicle-specific instructions.
