Here's a general overview of the process, but remember this is NOT a substitute for a detailed repair manual:
1. Safety First!
* Disconnect the battery: This is crucial to prevent accidental short circuits.
* Wear safety glasses and gloves: You'll be working with sharp metal and potentially hazardous materials.
* Have a helper: This job is much easier with an extra set of hands.
2. Preparation:
* Gather tools: You'll need a variety of tools, including sockets, wrenches, screwdrivers (Phillips and flathead), possibly a puller for the steering wheel, and possibly a special tool for disconnecting the steering shaft. Again, consult your repair manual for a complete list.
* Obtain the replacement steering column: Ensure it's the correct part for your specific Blazer model.
* Gather necessary parts: You might need new bolts, nuts, and possibly other components depending on the condition of the old column and any damage during removal.
3. Removal of the Old Steering Column:
* Disconnect the steering wheel: This usually involves removing a nut and possibly using a steering wheel puller. This step is critical and requires careful attention to avoid damage.
* Disconnect the steering shaft: This is often the most challenging part. It typically involves disconnecting a coupling or a joint. Your repair manual will show you how to do this safely and correctly.
* Disconnect electrical connections: Several wires and connectors are attached to the column. Carefully label or photograph them before disconnecting to ensure correct reconnection.
* Remove the column from the vehicle: This usually involves removing bolts and brackets securing it to the dashboard and firewall. Pay attention to the order of removal to avoid damaging anything.
4. Installation of the New Steering Column:
* Install the new steering column: This is essentially the reverse of the removal process. Make sure everything aligns correctly.
* Reconnect the steering shaft: Ensure the connection is secure and properly aligned.
* Reconnect the electrical connections: Refer to your labels or photographs to ensure everything is connected correctly.
* Install the steering wheel: Torque the nut to the manufacturer's specifications.
* Reconnect the battery: Carefully check all connections.
5. Post-Installation:
* Check steering operation: Carefully move the steering wheel back and forth to ensure smooth operation and no binding.
* Test all electrical connections: Make sure everything works correctly (turn signals, horn, etc.).
* Get an alignment: After any steering system work, an alignment is recommended to ensure your vehicle drives safely and correctly.
Again, I cannot stress enough the importance of using a repair manual specific to your 1989 Chevy Blazer. This process is intricate and potentially dangerous if not done correctly. If you are not comfortable performing this repair yourself, take your vehicle to a qualified mechanic. The cost of a professional repair is far less than the potential cost of injury or damage from an improper installation.
