P1554moderate severityPowertrain
Cruise Engaged Circuit High Voltage
on 2011 Chevrolet Express 6.0L V8 Vortec · RWD
What this code means
The PCM detected high voltage on the cruise control engaged circuit when cruise should not be active.
Symptoms
- Cruise control activating unexpectedly
- Check Engine Light
- Cruise control inoperative
- Vehicle speed changes without input
Common causes
- Faulty cruise control switch
- Short to voltage in cruise control circuit
- Faulty cruise control module
- Damaged wiring
Diagnostic steps
- Test cruise control switch
- Check circuit voltage
- Inspect wiring for shorts to power
- Test cruise control module
Repair notes
Repair shorted wiring or replace cruise control switch/module.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1