Symptoms - Power Take-Off (PTO) for GMC Truck TopKick C-Series (Conventional) C6/C7/C8 2004
Important: The following steps must be completed before using the symptom tables.
- Perform the
Diagnostic System Check - Power Take-Off (PTO)
before using the Symptom
Tables in order to verify that all of the following are true:
| • | There are no PCM or ECM DTCs set. |
| • | The vehicles modules can communicate to each other via the serial
data links. |
- 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
| • | Inspect the easily accessible and the visible system components
for obvious damage. |
| • | 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. Refer to
Testing for Intermittent Conditions and Poor Connections
in Wiring Systems.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order
to diagnose the symptom:
