Module Setup
WARNING: This page is about a different car, the 2021 GMC Sierra 3500 HD and 2021 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
The power take-off module requires that several parameters be setup according to customer requirements. Refer to the table below for available parameters and recommended setting. Refer to the GM Upfitter Integration website, <www.gmupfitter.com>, for the latest Power Take Off (PTO) Operating Description and Application Guide bulletin, which has extensive information about the power take-off system.
NOTE:
When programming the PTO control module be sure to verify the ECM PTO options (stationary, variable or mobile) are synchronized with the PTOM. Example, if the PTOM is set to stationary mode then the ECM must also be set to stationary mode. If the two modules are not synchronized no PTO idle up will occur. The critical parameters are listed below:
- Remote engine shutdown
- Maximum PTO engine speed
Power Take-Off Module Programmable Parameters
| Parameter | Available In Mode | Factory Default Setting | ||
|---|---|---|---|---|
| Stationary Preset | Stationary Variable | Mobile | ||
| PTO Mode | X | X | X | Preset |
| PTO In-Cab Control | Y | Y | Y | Enabled |
| PTO Remote Control | Y | Y | N | Disabled |
| Type Of (Exterior) Set Switch Operation | Y | Y | N | Momentary |
| Press "ON" Then Go To Preset 1 Speed | Y | N | N | Disabled |
| PTO Standby RPM | Y | Y | Y | 850 RPM |
| PTO Preset 1 Speed | Y | Y | Y | 1250 RPM |
| PTO Preset 2 Speed | Y | Y | Y | 1700 RPM |
| Maximum PTO Operating Speed | Y | Y | Y | 2100 RPM |
| Tap Step | N | Y | Y | 100 RPM |
| Ramp Rate | Y | Y | Y | 200 RPM/Sec |
| Maximum Vehicle Speed | N | N | Y | 129 KPH (80 MPH) |
| Minimum Remote Accelerator Voltage | Y | Y | N | 0.25 V |
| Maximum Remote Accelerator Voltage | Y | Y | N | 4.75 V |
| Action When Remote Set Switch Transitions To Low Voltage (<1.66 V) | Y | N | N | Go to Set Speed 1 |
| Remote Set Switch Transition To Open State (Between >1.66 V And <3.33 V) | Y | N | N | Go to Standby Speed |
| Remote Set Switch Transition To High Voltage (>3.33 V) | Y | N | N | Go to Set Speed 2 |
| Remote Engine Start | Y | Y | N | Disabled |
| Remote Engine Shutdown | Y | Y | N | Disabled |
| Load Feedback | Y | Y | Y | Disabled |
| Engage Relay | Y | Y | Y | Disabled |
| Keep Relay Engaged During Braking | N | N | Y | Disabled |
| Action After Brake Is Released | N | N | Y | RETURN TO BASE IDLE RPM |
| Auto Engine Shutdown Timer | Y | Y | N | Disabled |
| Engine Shutdown Due To Critical Engine Condition | Y | Y | N | Disabled |
| Engine Shutdown Warning | Y | Y | N | Disabled |
| Set Low Fuel Level For Engine | Y | Y | N | Disabled |
| Maximum PTO Engine Speed | Y | Y | Y | 1800 RPM |
| Maximum PTO Engage Speed | Y | Y | Y | 1500 RPM |
Recommended Settings For PTOM Parameters
| Programmable Parameter | Preset | Variable | Mobile | Range | Notes |
|---|---|---|---|---|---|
| PTO Mode | Default | Available | Available | - | - |
| PTO In-Cab Control | Enable/Disable | Enable/Disable | Enable/Disable | - | - |
| PTO Remote Control | Enable/Disable | Enable/Disable | Enable/Disable | - | - |
| Type Of (Exterior) Set Switch Operation | Momentary/Latching | Momentary/Latching | Momentary/Latching | - | - |
| Press "ON" Then Go to Preset 1 Speed | Disabled | Enable/Disable | N/A | N/A | In cab ON switch. Remote enable after arming. |
| PTO Standby RPM | Within Range | Within Range | Within Range | Base Idle-3100 RPM | Base idle overrides if higher. |
| PTO Preset 1 Speed | Within Range | RPM Capture Or Tap Down | RPM Capture Or Tap Down | Above Standby - 3100 RPM | Set (-) switch internal. Set switch external-disabled in mobile. Both can be enabled simultaneously. |
| PTO Preset 2 Speed | Within Range | Resume Or Tap Up | Resume Or Tap Up | Above Standby - 3100 RPM | Set (+) switch internal. Set switch external-disabled in mobile. Both can be enabled simultaneously. |
| Maximum PTO Operating Speed | Within Range | Within Range | Within Range | Base Idle-3100 RPM | - |
| Tap Step | Within Range | Within Range | Within Range | 4 - 500 RPM | - |
| Ramp Rate | Within Range | Within Range | Within Range | 4 - 1000 RPM/Second | Setting applies to remote switch inputs and remote throttle (Potentiometer) inputs. |
| Maximum Vehicle Speed | N/A | N/A | Within Range | 30 KPH (19 MPH) to 129 KPH (80 MPH) | Applies to mobile only. |
| Minimum Remote Accelerator Voltage | N/A | Within Range | N/A | 0 - 2.5 V | Remote throttle must be enabled for parameter to apply. |
| Maximum Remote Accelerator Voltage | N/A | Within Range | N/A | 2.5 - 5.0 V | Remote throttle must be enabled for parameter to apply. |
| Action When Remote Set Switch Transitions To Low Voltage (<1.66 V) | See Range | N/A | N/A | Go To Standby, Set 1 Or Set 2 | Defines PTO system action when remote set switch input goes low. |
| Remote Set Switch Transition To Open State (Between >1.66 V And <3.33 V) | See Range | N/A | N/A | Go To Standby, Set 1 Or Set 2 | Defines PTO system action when remote set switch input goes to open state. |
| Remote Set Switch Transition To High Voltage (>3.33 V) | See Range | N/A | N/A | Go To Standby, Set 1 Or Set 2 | Defines PTO system action when remote set switch input goes to +5 V reference. |
| Remote Engine Start | Enable/Disable | Enable/Disable | N/A | - | Requires remote switches. |
| Remote Engine Shutdown | Enable/Disable | Enable/Disable | N/A | - | Requires remote Switches. |
| Load Feedback | Enable/Disable | Enable/Disable | Enable/Disable | - | Requires remote wiring. |
| Engage Relay | Enable/Disable | Enable/Disable | Enable/Disable | - | Requires remote relay. |
| Keep Relay Engaged During Braking | N/A | N/A | Enable/Disable | - | - |
| Action After Brake Is Released | N/A | N/A | Return to base idle RPM - Return to standby RPM | - | - |
| Auto Engine Shutdown Timer | Enable/Disable | Enable/Disable | N/A | 4 minutes - 7 hours | - |
| Engine Shutdown Due To Critical Engine Condition | Enable/Disable | Enable/Disable | N/A | - | Oil Pressure, Hot Engine, Hot Transmission, Low Oil, Low Fuel, Diesel Particulate Filter Regeneration Required |
| Engine Shutdown Warning | Enable/Disable | Enable/Disable | N/A | 7 minutes | If PTO operation is continued when critical engine conditions are present, a horn chirp warning will occur after 2 to 5 minutes. The engine will be shutdown 2 minutes after the horn warning. |
| Set Low Fuel Level For Engine | N/A | Enable/Disable | N/A | 15 - 25 % Fuel Level | - |
| Maximum PTO Engine Speed | Within Range | Within Range | Within Range | 950 - 3100 RPM | - |
| Maximum PTO Engage Speed | - | - | - | Base Idle-1800 RPM | - |