Silverado 1500 4WD V8-6.0L VIN U (2006)
Power Take-Off: Testing and Inspection
- Symptoms - Power Take-Off (PTO)
SYMPTOMS
IMPORTANT: The following steps must be completed before using the symptom tables.
1. Perform the Diagnostic System Check - Vehicle, before using the Symptom Tables in order to verify that all of the following are true:
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There are no powertrain control module (PCM) or throttle actuator control (TAC) module DTCs set.
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The PCM and TAC module can communicate to each other via the serial data links. See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Diagnostic Trouble Code Tests and Associated Procedures
2. Review the system operation in order to familiarize yourself with the system functions. Refer to Power Take-Off (PTO) Description and
Operation.
Visual/Physical Inspection
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Inspect the up fitter connections of the PTO system.
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Inspect the easily accessible, or the visible system components for obvious damage or conditions which could cause the symptom.
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Inspect the transmission and the hydraulic pump for the proper fluid level.
Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
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Power Take-Off (PTO) Does Not Engage See: Power Take-Off (PTO) Does Not Engage
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Engine RPM Does Not Increase with Power Take-Off Engaged See: Engine RPM Does Not Increase With Power Take-Off Engaged
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Power Take-Off (PTO) Indicator Inoperative See: Power Take-Off (PTO) Indicator Inoperative