SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2006SUBURBAN C2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 688 (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 2006 GMC Sierra and 2006 Chevrolet 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 - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
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 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 .
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

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.