How do you reset the throttle body on a GM?
- Set the parking brake and block the drive wheels.
- Start and run the engine until it reaches normal operating temperature.
- Stop the engine, then disconnect and plug any vacuum lines, as required.
- Using an awl, pierce the idle stop screw cap and carefully pry the cap from the throttle body.
What is the throttle body relearn procedure?
ECU Accelerator Pedal Reset Procedure Note Timing is critical for this to work! 1. Turn the ignition switch to on. Dash gauges lit. Don t start the engine! 2. Wait 3 seconds. 3. Fully depress and release the accelerator pedal 5 times within 5 second. 4. Wait 7 to 10 seconds. 5. Fully depress the accelerator pedal for approximately 10 seconds.
When to do a GM throttle body relearn?
04/11/2021 · Resetting your electronic throttle control manually can be a tricky job. First, make sure the accelerator pedal is fully released. Next, turn the ignition on and then turn it off and wait for ten seconds. During these ten seconds, be sure the throttle valve is moving by listening for a sound of operation.
How does a fly by wire throttle body work?
28/03/2020 · How do you reset the throttle body on a GM? Set the parking brake and block the drive wheels. Start and run the engine until it reaches normal operating temperature. Stop the engine, then disconnect and plug any vacuum lines, as required. Using an awl, pierce the idle stop screw cap and carefully ...
How does a PCM change the throttle plate home position?
Resetting your electronic throttle control manually can be a tricky job. First, make sure the accelerator pedal is fully released. Next, turn the ignition on and then turn it off and wait for ten seconds. During these ten seconds, be sure the throttle valve is moving by listening for a sound of operation.
What is a fly by wire throttle body?
Many car makers including GM started installing fly by wire electronic throttle bodies. In those vehicles, the “gas” pedal isn’t connected to the throttle body by a cable. The pedal simply provides an electronic signal, telling the throttle body how much acceleration you’re requesting.
What happens to the PCM when the battery goes dead?
Over time, carbon buildup can accumulate around the throttle plate, changing it’s “home” position. If the buildup occurs gradually, the PCM “learns” the new home position. But when your battery goes dead or you disconnect it to work on your vehicle, the PCM “forgets” the adapative home position.
What happens if you replace throttle body?
If you replace the throttle body, the PCM won’t know and will continue to use the adaptive settings as if the carbon buildup is still in place. If you don’t do a relearn procedure, the PCM will “hunt” for a new baseline idle.