Here's a general outline. Specifics may vary slightly depending on your exact truck model (C10, C20, etc.):
1. Preparation and Disconnections:
* Steering Wheel: Remove the steering wheel. This usually involves using a steering wheel puller. Mark the wheel's position relative to the column before removal to aid in reinstallation.
* Steering Shaft: Disconnect the steering shaft from the gearbox. This often involves a slip yoke or a clamp. You may need to use a special tool to separate the shaft.
* Wiring Harness: Disconnect all wiring connectors attached to the column. Take pictures or make a detailed diagram to ensure proper reconnection. This includes turn signals, horn, cruise control (if equipped), etc.
* Column Shift Linkage (if applicable): Disconnect the linkage for the column-mounted shifter.
* Ignition Switch: Disconnect the ignition switch wiring and remove the switch itself from the column.
* Column-Mounted Accessories: Remove any accessories mounted on the column, such as the ignition lock cylinder.
2. Removing the Column:
* Support: Securely support the steering column to prevent it from dropping unexpectedly.
* Bolts/Fasteners: Locate and remove the bolts or fasteners securing the steering column to the firewall or dash. There are usually several, potentially on both the top and bottom of the column.
* Column Drop: Carefully lower the steering column. There may be some resistance. Work slowly and methodically.
3. Post-Removal:
* Inspection: Inspect the column and its mounting points for any damage or wear.
* Cleaning: Clean the area where the column was mounted.
Tools You'll Likely Need:
* Socket set (various sizes)
* Wrenches (various sizes)
* Screwdrivers (various types)
* Steering wheel puller
* Pry bar (possibly)
* Penetrating oil (like PB Blaster)
* Flashlight
* Camera (for documenting connections)
Important Considerations:
* Consult a Repair Manual: A repair manual specific to your 1977 Chevy pickup is invaluable. It will provide detailed diagrams, torque specifications, and specific instructions for your model. Haynes and Chilton manuals are readily available.
* Take Your Time: This is not a quick job. Rushing can lead to damage or injury.
* Professional Help: If you're uncomfortable with any part of this process, it's best to seek professional help from a mechanic. Steering column removal is not a trivial task.
This is a general overview. The exact steps and tools may vary slightly depending on your truck's specific configuration. Always prioritize safety and consult your repair manual for the most accurate and detailed instructions.
