Contents Wiring diagrams Section: Power Takeoff All sections

Power Take-Off System: Overview Chevrolet Silverado 2500 HD

Power Takeoff 8 illustrations ~1770 words

Scheme 1

Scheme 1: Power Take-Off (PTO) Schematics

Scheme 2

Scheme 2

Scheme 3

Scheme 3

Scheme 4

Scheme 4: Power Take-Off (PTO) Component Views
CalloutComponent Name
1X300
2G300
3Automatic Transmission Turbine Speed Sensor
4Automatic Transmission Input Shaft Speed (AT ISS) Sensor
5Automatic Transmission
6Vehicle Speed Sensor (VSS)
7X124
8Power Take Off (PTO) Module
9X175

Scheme 5

Scheme 5
CalloutComponent Name
1Driver Information (DIC) Switch
2Instrument Panel Cluster (IPC)
3Radio
4Ambient Light/Sunload Sensor Assembly (CJ2) / Ambient Light Sensor (C67/C42)
5HVAC Control Module
6Inflatable Restraint I/P Module Disable Switch (C99)
7Power Take-Off (PTO) Switch
8Auxiliary Power Outlet - Front 2
9I/P Multifunction Switch Assembly
10Auxiliary Power Outlet - Front 1
11Transfer Case Shift Control Switch (NQF/NQH)
12Trailer Brake Control Panel Switch (JL1)
13Headlamp and Panel Dimmer Switch

Scheme 6

Scheme 6: Power Take Off (PTO) Module
Connector Part Information OEM: 15491306 Service: See Catalog Description: 47-Way F ASG Series (BK)
Terminal Part Information Pins: 1, 32 Terminal/Tray: 1547616815 Core/Insulation Crimp: F/3 Release Tool/Test Probe: 15315247/J-35616-42 (RD) Pins: 2, 6-8, 10-12, 17, 21-23, 26-29, 33-34, 37 Terminal/Tray: 7116-0370-02/14 Core/Insulation Crimp: 9/9 Release Tool/Test Probe: J-38125-215/J-35616-64B (L-BU) Pins: 3, 13, 31, 45-46 Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Power Take Off (PTO) Module Connector Parts Information

PinWire ColorCircuit No.Function
12 BK/WH451Ground
20.35 YE9705-Volt Reference
30.8 D-BU979Torque Limit Request Signal
4-5Not Used
60.5 TN2501High Speed GMLAN Serial Data Bus
70.5 TN/BK2500High Speed GMLAN Serial Data Bus+
80.35 PU974Low Reference
9Not Used
100.35 L-BU977Remote Mode PPS
110.35 D-GN/WH972Mode Select B
120.35 TN973Mode Select C
130.8 BN/WH6085PTO Remote Engine Start Switch Signal
14-16Not Used
170.35 L-BU5986Serial Data Communication Enable
18-20Not Used
210.5 TN2501High Seed GMLAN Serial Data Bus
220.5 TN/BK2500High Seed GMLAN Serial Data Bus+
230.35 GY/BK976Low Reference
24-25Not Used
260.35 BN971Mode Select A
270.35 D-BU/WH6089PTO Remote Switch Set Signal
280.35 PU2562PTO Relay Coil Control
290.35 GY/BK6086PTO Switch Indicator Control
30Not Used
310.8 L-BU494Engine Shut Off Signal
322 RD/WH4540Battery Positive Voltage
330.5 D-GN/WH6142PTO Engine Shutdown Signal
340.35 WH9755-Volt Reference
35-36Not Used
370.5 L-BU/WH6311TCC Brake Signal
38-44Not Used
450.8 GY978Remote Mode Enable Signal
460.8 YE2522PTO Engage Signal
47Not Used

Power Take Off (PTO) Module Connector Terminal Identification

Scheme 7

Scheme 7: Power Take Off (PTO) Relay
Connector Part Information OEM: 12129716 Service: 15306045 Description: 4-Way F Metri-Pack 280 Series Flex-Lock (GY)
Terminal Part Information Pins: 30, 85 Terminal/Tray: 12110847/4 Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: 15315247/J-35616-4A (PU) Pins: 86-87 Terminal/Tray: 12110847/4 Core/Insulation Crimp: C/5 Release Tool/Test Probe: 15315247/J-35616-4A (PU)

Power Take Off (PTO) Relay Connector Parts Information

PinWire ColorCircuit No.Function
300.8 RD/WH2640Battery Positive Voltage
850.35 PU2562PTO Relay Coil Control
860.8 RD/WH2640Battery Positive Voltage
870.8 WH2561PTO Supply Voltage

Power Take Off (PTO) Relay Connector Terminal Identification

Scheme 8

Scheme 8: Power Take Off (PTO) Switch
Connector Part Information OEM: 15456018 Service: See Catalog Description: 9-Way F HCM (BK)
Terminal Part Information Pins: 1-2, 4-9 Terminal/Tray: See Terminal Repair Kit Core/Insulation Crimp: See Terminal Repair Kit Release Tool/Test Probe: See Terminal Repair Kit

Power Take Off (PTO) Switch Connector Parts Information

PinWire ColorCircuit No.Function
10.35 YE9705-Volt Reference
20.35 BN971Mode Select A
3Not Used
40.35 TN973Mode Select C
50.35 PU974Low Reference
60.35 YE6817LED Dimming Signal
70.35 PU/WH6816LED Dimming Signal
80.35 GY/BK6086PTO Switch Indicator Control
90.35 D-GN/WH972Mode Select B

Power Take Off (PTO) Switch Connector Terminal Identification

Circuit/System Description

The power take-off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. The PTO system specifically controls engine speed to values higher than normal base idle, PTO load relay engagement, and remote starting and shutdown of the engine. When the operator requests PTO using either the PTO switch or PTO remote, the engine RPM will increase to a default standby speed. The engine control module (ECM) converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. When PTO is engaged, the power take-off module (PTOM) sends a GMLAN serial data message to the ECM requesting engine speeds, in accordance with the depressed switches from the PTO switch or remote.

The power take-off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. The PTO system specifically controls engine speed to values higher than normal base idle, PTO load relay engagement, and remote starting and shutdown of the engine. When the operator requests PTO using either the PTO switch or PTO remote, the engine RPM will increase to a default standby speed. The engine control module (ECM) converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. When PTO is engaged, the power take-off module (PTOM) sends a GMLAN serial data message to the ECM requesting engine speeds, in accordance with the depressed switches from the PTO switch or remote.

The power take-off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. The PTO system specifically controls engine speed to values higher than normal base idle, PTO load relay engagement, and remote starting and shutdown of the engine. When the operator requests PTO using either the PTO switch or PTO remote, the engine RPM will increase to a default standby speed. The engine control module (ECM) converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. When PTO is engaged, the power take-off module (PTOM) sends a GMLAN serial data message to the ECM requesting engine speeds, in accordance with the depressed switches from the PTO switch or remote.

The power take-off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. The PTO system specifically controls engine speed to values higher than normal base idle, PTO load relay engagement, and remote starting and shutdown of the engine. When the operator requests PTO using either the PTO switch or PTO remote, the engine RPM will increase to a default standby speed. The engine control module (ECM) converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. When PTO is engaged, the power take-off module (PTOM) sends a GMLAN serial data message to the ECM requesting engine speeds, in accordance with the depressed switches from the PTO switch or remote.

The power take-off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. The PTO system specifically controls engine speed to values higher than normal base idle, PTO load relay engagement, and remote starting and shutdown of the engine. When the operator requests PTO using either the PTO switch or PTO remote, the engine RPM will increase to a default standby speed. The engine control module (ECM) converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. When PTO is engaged, the power take-off module (PTOM) sends a GMLAN serial data message to the ECM requesting engine speeds, in accordance with the depressed switches from the PTO switch or remote.

The power take-off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. The PTO system specifically controls engine speed to values higher than normal base idle, PTO load relay engagement, and remote starting and shutdown of the engine. When the operator requests PTO using either the PTO switch or PTO remote, the engine RPM will increase to a default standby speed. The engine control module (ECM) converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. When PTO is engaged, the power take-off module (PTOM) sends a GMLAN serial data message to the ECM requesting engine speeds, in accordance with the depressed switches from the PTO switch or remote.

The power take-off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. The PTO system specifically controls engine speed to values higher than normal base idle, PTO load relay engagement, and remote starting and shutdown of the engine. When the operator requests PTO using either the PTO switch or PTO remote, the engine RPM will increase to a default standby speed. The engine control module (ECM) converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. When PTO is engaged, the power take-off module (PTOM) sends a GMLAN serial data message to the ECM requesting engine speeds, in accordance with the depressed switches from the PTO switch or remote.

The power take-off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. The PTO system specifically controls engine speed to values higher than normal base idle, PTO load relay engagement, and remote starting and shutdown of the engine. When the operator requests PTO using either the PTO switch or PTO remote, the engine RPM will increase to a default standby speed. The engine control module (ECM) converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. When PTO is engaged, the power take-off module (PTOM) sends a GMLAN serial data message to the ECM requesting engine speeds, in accordance with the depressed switches from the PTO switch or remote.

The power take-off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. The PTO system specifically controls engine speed to values higher than normal base idle, PTO load relay engagement, and remote starting and shutdown of the engine. When the operator requests PTO using either the PTO switch or PTO remote, the engine RPM will increase to a default standby speed. The engine control module (ECM) converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. When PTO is engaged, the power take-off module (PTOM) sends a GMLAN serial data message to the ECM requesting engine speeds, in accordance with the depressed switches from the PTO switch or remote.

The internal fault detection is handled inside the power take-off (PTO) module. No external circuits are involved.

The power take-off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. The PTO system specifically controls engine speed to values higher than normal base idle, PTO load relay engagement, and remote starting and shutdown of the engine. When the operator requests PTO using either the PTO switch or PTO remote, the engine RPM will increase to a default standby speed. The engine control module (ECM) converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. When PTO is engaged, the power take-off module (PTOM) sends a GMLAN serial data message to the ECM requesting engine speeds, in accordance with the depressed switches from the PTO switch or remote.

The power take-off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. The PTO system specifically controls engine speed to values higher than normal base idle, PTO load relay engagement, and remote starting and shutdown of the engine. When the operator requests PTO using either the PTO switch or PTO remote, the engine RPM will increase to a default standby speed. The engine control module (ECM) converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. When PTO is engaged, the power take-off module (PTOM) sends a GMLAN serial data message to the ECM requesting engine speeds, in accordance with the depressed switches from the PTO switch or remote.

The power take-off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. The PTO system specifically controls engine speed to values higher than normal base idle, PTO load relay engagement, and remote starting and shutdown of the engine. When the operator requests PTO using either the PTO switch or PTO remote, the engine RPM will increase to a default standby speed. The engine control module (ECM) converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. When PTO is engaged, the power take-off module (PTOM) sends a GMLAN serial data message to the ECM requesting engine speeds, in accordance with the depressed switches from the PTO switch or remote.

The power take-off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. The PTO system specifically controls engine speed to values higher than normal base idle, PTO load relay engagement, and remote starting and shutdown of the engine. When the operator requests PTO using either the PTO switch or PTO remote, the engine RPM will increase to a default standby speed. The engine control module (ECM) converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. When PTO is engaged, the power take-off module (PTOM) sends a GMLAN serial data message to the ECM requesting engine speeds, in accordance with the depressed switches from the PTO switch or remote.

Power Take-Off (PTO) Description and Operation

The power take-off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. The PTO system specifically controls engine speed to values higher than normal base idle, PTO load relay engagement, and remote starting and shutdown of the engine. When the operator requests PTO, the PTO switch will be turned ON and the engine RPM will go to a default standby speed.

The PTO system is integrated with the cruise control and engine control system. The PTO system utilizes the following

Factory Installed PTO Components

  1. The transmission driven PTO gear
  2. The in-cab PTO switch
  3. The power take off module (PTOM)
  4. The remote PTO upfitter connector
  5. Revised underbody structure and floor covering