The 24xLink PCM is a Gen 3 LS-series PCM equipped with a Torqhead redesigned interface that works seamlessly with your existing LT1/LTx harness. Simply plug in your factory connectors, and the 24xLink PCM takes care of the wiring changes required for your 24x conversion—all in one unit.

The included C3 harness connects the PCM to the coils, crank sensor, and cam sensor. Each harness is professionally assembled using Delphi connectors, terminals, and seals, and every unit is 100% tested before shipping.

Unlike custom harness solutions that take weeks, our strategy allows for unmatched turnaround times—wait days, not weeks. When your PCM arrives, just plug it in and go.

Inside: LS Gen 3 PCM
Outside: LT1 connections, with a custom injection-molded LT1 front plate for factory-correct fitment and durability. No internal soldering modifications are ever made, ensuring factory PCM quality and reliability.

What’s Included

• 24xLink PCM (new/reman 12200411 PCM, 100% tested by Torqhead)

  • Pre-loaded with common conversion parameters

  • Powder-coated for long-lasting protection

• C4 PCM mount and bracket (integrated into PCM bottom)

• Optional C4 Cluster LCD Controller

• 24xLink C3 Harness (coil, crank, and cam connections)

• Two knock sensors (1994/1995 cars only)

• Installation instructions

Features

• Plug-and-play Gen 3 LS PCM—directly connects to your existing 1994+ LT1 engine harness.

• Factory cluster support: fuel economy, range, oil temp, coolant temp, transmission temp, and voltage.

• New for 2024: optional advanced LCD features (IAT, MAP, RPM, AFR, fuel trims, ignition advance).

• Exclusive support for 1994/1995 4L60E transmissions—a Torqhead feature since 2016 with hundreds of proven installs.

• All-in-one solution: PCM + wiring changes combined in a single component.

• Durability built-in: injection-molded front plate and powder-coated finish.

• 100% tested before shipping.

Important Notes

• If you do not purchase the CCM<>PCM communication module, your LCD will have limited functionality (speed and fuel only) and will flash a “SYS” error. Engine, transmission, and vehicle operation remain unaffected.

• Engine Tune: PCM comes with a stock LT1 conversion tune.

  • Send us a base tune from your tuner (via HP Tuners) and we’ll load it for free before shipping.

  • Need a tailored tune? Add a custom base tune for $135.

Installation Snapshot

1. Remove your existing LT1 PCM.

2. Install the 24xLink PCM using the built-in C4 bracket.

3. Plug your factory connectors into the new PCM (red, blue, black, and clear).

4. Connect the C3 harness to the PCM, crank sensor, cam sensor, and coils.

5. Connect ignition power/ground to the LT ignition coil connector.

6. (1994/1995 only) Swap knock sensors before refilling coolant.

7. Install optional CCM/LCD module inside the vehicle.