P1517high severityPowertrain
Throttle Actuator Control Module Performance
on 2011 Chevrolet Express 6.0L V8 Vortec · RWD
What this code means
The PCM detected a general performance failure of the Throttle Actuator Control (TAC) module. The TAC module manages electronic throttle control communication.
Symptoms
- Reduced Engine Power
- Check Engine Light
- Limited throttle response
- Possible stalling
Common causes
- TAC module failure
- Communication fault between TAC and PCM
- Wiring issue
- PCM failure
Diagnostic steps
- Test communication between TAC and PCM
- Check TAC module power and grounds
- Inspect wiring
- Test throttle body operation
Repair notes
Replace TAC module or repair communication wiring. Check for PCM software updates.
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P0002
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P0010
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P0013
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P0014
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P0015
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