Engine Control Module Programming and Setup (LSA, LS3, L99)

The following service procedures require either a programming or a setup event performed for a complete repair.

ECM Replacement

Warning

Replacement or reprogramming of the ECM, or replacement of the clutch pedal position sensor (CPPS) or clutch pedal requires that a CPPS learn procedure be performed. Failure to perform the CPPS learn procedure may result in personal injury or damage to the vehicle or its components if the vehicle is in gear and the starter motor is accidentally engaged.

If the engine control module (ECM) is replaced, the following procedures must be performed:

1. The ECM Reprogramming-Refer to Service Programming System (SPS) Service Programming System (SPS).

2. The Theft Deterrent Programming-Refer to Immobilizer System Component Programming Programming and Relearning.

3. Brake Pedal Position Sensor Learn-Refer to Brake Pedal Position Sensor Learn 6L45/6L50/6L80/6L90 - Automatic Transmission.

4. The CKP Variation Learn-Refer to Crankshaft Position System Variation Learn Testing and Inspection.

5. The Clutch Pedal Position Sensor Learn-Refer to Clutch Pedal Position Sensor Learn Tremec 6-Speed - Manual Transmission.

6. The Throttle Learn procedure-Refer to Throttle/Idle Learn Testing and Inspection.

7. Engine Oil Life Remaining-When available, use a scan tool to rest the Engine Oil Life Remaining back to the original percentage recorded.

8. Transmission Fluid Life Remaining-When available, use a scan tool to reset the Transmission Fluid Life Remaining back tot he original percentage recorded.

ECM Reprogramming

Warning

Replacement or reprogramming of the ECM, or replacement of the clutch pedal position sensor (CPPS) or clutch pedal requires that a CPPS learn procedure be performed. Failure to perform the CPPS learn procedure may result in personal injury or damage to the vehicle or its components if the vehicle is in gear and the starter motor is accidentally engaged.

* If the ECM needs to be reprogrammed, refer to Service Programming System (SPS) Service Programming System (SPS).

* The Clutch Pedal Position Sensor Learn-Refer to Clutch Pedal Position Sensor Learn Tremec 6-Speed - Manual Transmission.

* Engine Oil Life Remaining-When available, use a scan tool to reset the Engine Oil Life Remaining back to the original percentage recorded before the module was reprogrammed.

* Transmission Fluid Life Remaining-When available, use a scan tool to reset the Transmission Fluid Life Remaining back to the original percentage recorded before the module was reprogrammed.

Setup for Component Replacement

The replacement of some components will require a setup procedure for complete repair.

If any of the following components are replaced, a CKP Variation Learn Procedure must be performed. Refer to Crankshaft Position System Variation Learn Testing and Inspection.

* Engine replacement

* Any engine repair that disturbs the crankshaft position (CKP) sensor or its relationship with the crankshaft reluctor wheel

* CKP sensor

If the throttle body is replaced, a Throttle Learn procedure must be performed. Refer to Throttle/Idle Learn Testing and Inspection.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Engine Control Module: Testing and Inspection

Use the Manual With the Right Hardware

When to See a Mechanic

Rather have a pro handle this?