Here's a general outline. You'll need a socket wrench set, possibly a ratchet extension, a torque wrench (highly recommended), and possibly a pry bar. Consult a repair manual specific to your Blazer's year, engine, and trim level for precise details and torque specifications. A Haynes or Chilton manual is a good investment for this type of task.
General Steps:
1. Disconnect the Battery: Completely disconnect the negative battery terminal.
2. Access the Starter: This is the most variable step. The starter location differs slightly based on engine and transmission type. Generally, you'll need to access it from underneath the vehicle. This often requires jacking up the Blazer securely and using jack stands for safety. Locate the starter; it's usually bolted to the engine block near the bellhousing (where the engine connects to the transmission). You might need to remove some components for better access, such as the air intake or parts of the exhaust system. Your repair manual will show you the exact location and what needs to be removed.
3. Disconnect the Electrical Connections: There will be at least two large cables connected to the starter: a power cable (usually thicker) and a smaller wire. Carefully disconnect these cables. Sometimes these are held on with bolts, other times with clamps. Take pictures before disconnecting to help with reassembly.
4. Remove the Starter Bolts: Typically, there are two or three bolts holding the starter to the engine block. Remove these bolts. You might need a socket extension to reach them.
5. Remove the Starter: Once the bolts are out, the starter should come loose. It might be a tight fit. Gently wiggle or pry it free. Be careful not to damage any surrounding components.
6. Install the New Starter: Position the new starter in place, ensuring it aligns correctly with the mounting holes. Install the bolts and tighten them to the manufacturer's specified torque (found in your repair manual).
7. Reconnect the Electrical Connections: Reconnect the power and small wires to the new starter, ensuring they are securely fastened.
8. Reconnect the Battery: Reconnect the negative battery terminal.
9. Test the Starter: Attempt to start the vehicle. If it doesn't start, double-check all connections and make sure the battery is properly charged.
Important Considerations:
* Repair Manual: A repair manual specific to your 1996 Chevy Blazer is crucial. This guide provides general steps, but variations exist.
* Safety: Always use jack stands when working under your vehicle. Wear safety glasses and gloves.
* Torque Specifications: Over-tightening or under-tightening bolts can damage components. Use a torque wrench and follow the specifications in your repair manual.
* Professional Help: If you're not comfortable working on your vehicle, consider taking it to a qualified mechanic. This is a moderately challenging repair job.
This is a general overview; the specifics depend heavily on your Blazer's engine and configuration. Consult a repair manual for your specific vehicle before attempting this repair. Remember safety first!
