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Discussion Starter #1
2014 1LT with manual trans. 23K miles.

On the way to work in the morning I get an intermittent "Service Stabiltrak" error. This is followed by "Engine Power Reduced" and a Check Engine light. Turning off the car for 10 seconds clears the error. Happens a few times per week. Always in the morning.


Something with the throttle position sensor.

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Vehicle Manufacturer: Chevrolet
Vehicle Calibration ID: Not present

Current Fault Log
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ECU reports no current faults

Pending Fault Log
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ECU reports no pending faults

Historic Fault Log
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P2127: Throttle/Pedal Position Sensor/Switch E Circuit Low Input
Other discovered fault codes
(possibly pending, current or manufacturer specific)
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Anyone else get this? I understand the throttle position sensor is part of the pedal assembly under the dash.

I see two possible courses of action:

1. Clean and grease the connector on the pedal assembly.
2. Replace the pedal assembly. ($59) at Rock Auto.


Anyone else experience this?
 

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3. Take it to a dealer.

Unless the car has been totaled, it should still be under B2B warranty.

Without pulling the service manual, I think it's saying that one of the two circuits in the sensor are opening up and the sensor needs to be changed. It's unusual for it to go that soon, but that's what warranties are for. The other issues are a side-effect of that. The computer is no longer confident of the sensor, so it's unsure of what you want the car to do.
 

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Without pulling the service manual, I think it's saying that one of the two circuits in the sensor are opening up and the sensor needs to be changed.
My hunch was correct. "Sensor 2" circuit is either opening or shorting to ground.
 
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