FAQ for Engine Control Module Repair
Q: What service procedure may be performed if a control module is replaced?
A:
The crankshaft variation learning procedure, the engine oil life reset procedure, the idle learn procedure, the inspection/maintenance complete system set procedure, the vehicle theft deterrent password learning procedure and the Throttle Position (TP) sensor learn procedure.
By BobGM Specialist
01/11/2022 Q: What should be noticed when programming?
A:
You should not disturb the tool harness while programming. If an interruption occurs during the programming procedure, programming failure or control module damage may occur.
By BobGM Specialist
01/11/2022 Q: What is the method for off-board pass-thru programming?
A:
The Tech 2 or other scan tools, off-board programming adapter (OBPA), Techline Terminal or a personal computer equipped with General Motors Corporation authorized programming software. The Tech 2 or other scan tool is used as an interface between the vehicle and the Techline Terminal or a personal computer, and the control module is not installed in a vehicle.
By BobGM Specialist
01/11/2022 Q: What should we ensure when before programming a control module?
A:
The vehicle system voltage, twilight sentinel, interior lights, daytime running lights, HVAC systems, engine cooling fans, and the ignition switch is in the proper position and all tool connections are secure.
By BobGM Specialist
01/11/2022 Q: What is the procedure to ensure the correct harness connector from the Off-Board Programming Adapter kit?
A:
You need to connect the control module, the Off-Board Programming Adapter, and the Tech 2 as described on the Techline terminal to ensure you use the correct harness connector from the Off-Board Programming Adapter kit.
By BobGM Specialist
01/11/2022 Q: What is the procedure for the vehicle system voltage?
A:
You need to repair all charging system concerns before programming a control module, and the battery voltage is greater than 12 volts but less than 16 volts. The battery must be fully charged before programming the control module. You should verify that a battery charger is not connected to the vehicle's battery, and turn off or disable any system that may put a load on the vehicle's battery.
By BobGM Specialist
01/11/2022 Q: What control module must re-learn after a software/calibration update?
A:
The fuel trim correction, Idle Air Control (IAC) learned position and automatic transmission shift adapts.
By BobGM Specialist
01/11/2022 Q: What should be noticed if the programming procedure is interrupted or unsuccessful?
A:
You should not turn off the off-board programming adapter, and ensure the control module and the off-board programming adapter connections are secure and the Techline operating software is up to date. Attempt to reprogram the control module. If the control module cannot be programmed, you should replace the control module.
By BobGM Specialist
01/11/2022 Q: What connections should we ensure are secure?
A:
The Off-Board Programming Adapter, the Tech 2, the control module, and the Techline terminal.
By BobGM Specialist
01/11/2022 Q: What service procedure must be performed if a control module is replaced?
A:
The CKP system variation learning procedure, the GM oil life system - resetting, inspection/Maintenance (I/M) complete system set procedure, and programming theft deterrent system components.
By BobGM Specialist
01/11/2022 See more FAQs (12)