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HOMESERVICE MANUALSCHEVROLET2006SUBURBAN C2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 393 (POWER TAKE-OFF SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESPOWER TAKE-OFF (PTO) INDICATOR INOPERATIVETEST DESCRIPTION
2006 Chevrolet Suburban C2500, 6.0 U

Test Description

2006 Chevrolet Suburban C2500, 6.0 USECTION Test Description
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The number below refers to the step number on the diagnostic table.

  1. 5:  This step tests the ground circuit.
Power Take-Off (PTO) Indicator Inoperative

Step Action Yes No
Schematic Reference:  Power Take-Off (PTO) Schematics  
1 Did you perform the Diagnostic System Check - Power Take-Off? Go to Step 2  Go to Diagnostic System Check - Power Take-Off (PTO) 
2 Did you review the Power Take-Off Description and Operation and perform the necessary inspections? Go to Step 3  Go to Power Take-Off (PTO) Description and Operation 
3 Verify the fault is present.
Does the system operate normally?		 Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 4 
4 Does the PTO solenoid engage? Go to Step 5  Go to Power Take-Off (PTO) Does Not Engage 
5 
  1. Turn the ignition switch to RUN.
  2. Ensure that the conditions for engaging the PTO solenoid are met. Refer to Power Take-Off (PTO) Description and Operation .
  3. Remove the PTO switch but leave it connected to the harness.
  4. Turn the PTO switch to the ON position.
  5. Connect a fused jumper wire at the PTO switch connector ground circuit to a known ground.
Does the indicator come on?		 Go to Step 6  Go to Step 7 
6 Repair the open or high resistance in both ground circuits 8 and 1850. Refer to Wiring Repairs in Wiring Systems.
Did you complete the repair?		 Go to Step 8  -
7 Replace the PTO switch. Refer to Power Take-Off (PTO) Switch Replacement .
Did you complete the replacement?		 Go to Step 8  -
8 Test drive the vehicle and operate the PTO system as described in the supporting test.
Does the symptom occur?		 Go to Step 4  System OK
RENDER: 1.0x

NO RELATED

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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.