P1884low severityPowertrain
TCC Enable / Shift Light Circuit
on 2011 Chevrolet Express 6.0L V8 Vortec · RWD
What this code means
The TCM detected a fault in the TCC enable or shift indicator light circuit.
Symptoms
- Shift light not working
- Check Engine Light
- TCC not engaging properly
Common causes
- Burnt out shift indicator bulb
- Wiring issue to indicator light
- TCM driver failure
Diagnostic steps
- Test shift light bulb
- Check circuit wiring
- Test TCM output for shift light
Repair notes
Replace shift indicator bulb or repair wiring.
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P0015
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