Question about 2010 Chevrolet Silverado

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On my 2010 Silverado the message center says engine power reduced, service stabilitrack and service traction control system. What would cause these messages. It started after sitting for a few days

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  • Chevrolet Master
  • 3,218 Answers

Make sure the battery is charged fully and the charging system is working properly. Low voltage will cause these modules to shut down for the engine to operate properly. The life expantancy of a battery is 5 yrs. Gm has also been having issues with the throttle actuator assembly as it is now drive by wire. ( No throttle cable ) Causing the reduced engine power light to come on and in turn shutting down other modules due to reduced power. Have the codes scanned for accelerator pedal correlation issues to determine if the throttle unit needs replacement

Posted on Apr 04, 2015

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  • Chevrolet Master
  • 745 Answers

The fault codes have nothing to do with it sitting for a few days. There are sensors that work with your ABS brakes and TCS to help your car maintain control when corning briskly under load. You probably have a bad sensor on one of the wheels. Recommend you get the Haynes manual to see exactly how to test and replace them. A multimeter will help too.

Posted on Apr 04, 2015

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Posted on Jan 02, 2017

Imus
  • 2 Answers

SOURCE: Traction Control Off and Service ABS System

If your trac and abs are both on. the problem could be a wheel speed sensor.
on some GM cars this sensor is built into the vehichles hub unit. making the bering and sensor one sealed unit. cheap hub units can be gotten (under 100 bucks) at autozone

Posted on Jul 21, 2009

Murphybanton
  • 2004 Answers

SOURCE: service engine message on message center

The fuel pump which is located in the fuel tank beneath the back seat has gotten bad. Consider replacing it.

Cheers and rate this solution.

Posted on Sep 05, 2009

  • 714 Answers

SOURCE: The "engine power is reduced" light comes on

po455 is Probable Cause[s]

1. Defective, loose or missing fuel cap
2. EVAP canister broke, hose cracked or not connected
3. Purge or vent solenoid defective
4 . Vacuum leak at engine po121 code po121 means Throttle Position Sensor/Switch A Circuit Range/Performance Problem . it is usually indicative of a faulty throttle position sensor or faulty wiring harness in the engine bay.

Posted on Feb 27, 2010

SOURCE: reduced engine power on

The traction control uses the speed sensor in the transmission and the wheel speed sensors to determine wheel spin. If a wheel spins braking is applied to it so that the power can be transferred to the other wheels. At some point the ECU detected a gross disagreement between the sensors and so as a precaution has entered into a limp home mode. On some systems if the fault is in error it can be cleared by putting the car into drive and moving forward a meter, putting in reverse and going a back a meter and doing this three times. If one or other of the sensors are faulty this process will not allow the error to be cleared. You need to check or have checked the error codes and the speed sensors.

Posted on May 28, 2010

  • 2 Answers

SOURCE: 2009 chevy silverado traction control


DTC P1516 Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance

Your vehicle has an electronic throttle body unit so it uses voltage signals to control throttle blade in the throttle body. There are a few different issues that can cause this problem.

First off there is a update for the PCM to address those codes, but you will have to take it to the dealer for that.

Second there is issues with the actuator on the throttle body binding up and causing the codes.

Third there is a yellow wire coming off the throttle body connector that breaks inside internally and cannot be seen to the naked eye. The best way to test that is to grab the wire about 5 inches from the connector and tug if it feels spongy or breaks, that

Posted on Jan 01, 2011

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Check engine and service traction control light on in 3rd limp mode


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ENGINE POWER IS REDUCED
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What causes the "Reduced Engine Power", "Service Stability Control" and "Traction Control" warning lights to come on?


the "Reduced Engine Power", problem causes the PCM to disable "Service Stability Control" and "Traction Control" turning on the warning lights to come on for those systems . The reduced engine power is because of a problem with the electronic throttle control system or as GM calls it TAC system . Reduced Engine Power Mode
When the PCM detects a condition with the TAC system, the PCM may enter a reduced engine power mode. Reduced engine power may cause one or more of the following conditions:
• Acceleration limiting--The PCM will continue to use the accelerator pedal for throttle control, however, the vehicle acceleration is limited.
• Limited throttle mode--The PCM will continue to use the accelerator pedal for throttle control, however, the maximum throttle opening is limited.
• Throttle default mode--The PCM will turn OFF the throttle actuator motor and the throttle will return to the spring loaded default position.
• Forced idle mode--The PCM will perform the following actions:
- Limit engine speed to idle by positioning the TP, or by controlling the fuel and spark if the throttle is turned OFF.
- Ignore the accelerator pedal input.
• Engine shutdown mode--The PCM will disable fuel and de-energize the throttle actuator.
© 2017 General Motors Corporation. All rights reserved.



Drive by Wire training Your best bet , take it to a GM dealer

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Service stabilitrack message


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Tow messages appear on the dash board: Service traction control and Engine power reduced. When this happen I can feel the shift in the transmission when I'm driving. After a while these messages d


Pretty much tells you the system with the fault

Traction Control is embedded into the abs braking
system, so diagnose that using the codes you have,
same as any other obd codes you get

The Reduced Power could be another problem & it
cuts off fuel injectors to save the exhaust converter
from overheating & being ruined

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Traction conrol


The traction control light is on to let you know that system is disabled. I would say the actual problem is a performance issue with the engine.
You should have someone scan the computer for trouble codes to proceed with testing. A 2010 model may still be under factory warranty.

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