* A manual transmission: Finding a suitable manual transmission from a donor vehicle (likely another C1500, but the year matters for compatibility) would be the first step.
* Clutch system: This includes the clutch pedal assembly, hydraulic lines, master and slave cylinders, pressure plate, clutch disc, flywheel, and possibly a different bellhousing. The firewall likely needs modification to accommodate the clutch pedal.
* Driveshaft: The driveshaft length may be different between automatic and manual setups, and likely requires modification or replacement.
* Pedal assembly: As mentioned, installing a clutch pedal requires modifying or replacing the existing pedal assembly.
* Wiring harness: The automatic transmission's wiring harness won't work with the manual transmission, so modification or a complete replacement is necessary. The computer may also need reprogramming or replacement if the automatic transmission's computer control module isn't removed entirely.
* Shift linkage: A proper manual shift linkage would need to be installed.
* Possible modifications to the frame: Depending on the specific donor transmission, subtle frame modifications might be necessary for proper clearance.
The complexity and cost of such a conversion often outweigh the benefits, often exceeding the value of the truck itself. This isn't something a novice mechanic could tackle; it requires significant mechanical expertise and specialized tools. Finding parts for a 30-year-old truck might also prove challenging and expensive.
