General Steps (Specifics will vary):
1. Preparation: Jack up the Blazer and securely support it on jack stands. You'll likely need to work from underneath. Gather your tools: socket wrench set (likely a 13mm, 15mm, and possibly larger), ratchet, extensions, a wire brush, and a new starter motor. You might also need penetrating oil (like PB Blaster) to help loosen bolts.
2. Access the Starter: This is the hardest part and depends heavily on your engine. Generally, the starter is located on the passenger side of the engine, near the bellhousing (where the engine and transmission connect). You may need to remove or loosen various components for access, such as:
* Exhaust components: Parts of the exhaust system might be in the way. You might need to loosen or remove sections of the exhaust pipes or hangers to gain better access.
* Wiring harnesses: Carefully move aside any electrical wiring harnesses that are obstructing the starter. Take photos before moving them to help with reassembly.
* Transmission linkage (if applicable): Depending on your Blazer's setup, the transmission linkage might interfere with the starter access. You may need to loosen or disconnect it temporarily.
3. Disconnect the Starter: Once you have visual access to the starter, disconnect the electrical connections. There are typically two large wires connected to the starter solenoid (a small box on the starter). Use a wire brush to clean the terminals before disconnecting to avoid short circuits. There might also be a small ground wire.
4. Remove the Starter Bolts: The starter is usually held in place by 2 bolts. These can be very difficult to access and may be seized. Penetrating oil applied several hours in advance is highly recommended. Carefully remove the bolts.
5. Remove the Starter: Carefully remove the starter. It might be a little snug, so gently wiggle it free.
6. Install the New Starter: Clean the mounting surface on the engine block. Install the new starter, ensuring it is correctly aligned with the mounting holes.
7. Secure the New Starter: Tighten the mounting bolts to the manufacturer's specifications.
8. Reconnect Electrical Connections: Carefully reconnect the electrical wires to the new starter, making sure the connections are secure and clean.
9. Reassemble: Carefully reinstall any components you removed to access the starter.
10. Lower the Blazer: Lower the Blazer from the jack stands.
11. Test the Starter: Connect the negative battery terminal. Attempt to start the engine.
Important Considerations:
* Consult a Repair Manual: A repair manual specific to your 1993 Chevy Blazer is invaluable. It will provide detailed diagrams, torque specifications, and step-by-step instructions specific to your engine.
* Safety First: Working under a vehicle is dangerous. Always use jack stands and never rely solely on a jack. Wear safety glasses.
* Professional Help: If you're uncomfortable performing this repair yourself, take it to a qualified mechanic. The difficulty of access can make this job far more challenging than it sounds.
This is a general guide, and the exact procedure will vary. Consult a repair manual for your specific vehicle before attempting this repair. Failing to do so could lead to damage to your vehicle or personal injury.
