Question about Chevrolet Tahoe

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Service stability system

Reduced engine power for my car

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  • Chevrolet Master
  • 40,775 Answers

Run fault codes and check which sensor has put in limp mode.

Posted on Dec 29, 2013

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Posted on Jan 02, 2017

  • 20 Answers

SOURCE: service stability system

one of the four load stability sensors (one at each wheel suspention arm) has gone awry. Computer diagnostics (Advanced scan tool) will tell you which one. Suggest replace both on front or both on rear (whichever the case)

Posted on Jul 04, 2008

  • 3 Answers

SOURCE: service engine soon and reduced engine power

disconnect batt. for 30 min. then reconnect,if no problem exist the lights will go away

Posted on Dec 20, 2009

  • 31 Answers

SOURCE: stability system disabled lights come on,why?

check the gas pedal if it doesnt have a cable it tends to go out it is a drive by wire system g.m. vehicles have a common problem

Posted on Feb 12, 2010

  • 131 Answers

SOURCE: servicing stability system

traction control/stability control is usually part of the abs(anti-lock brake system) system without a scanner it would be almost impossible to diagnose if your not firmiliar with abs and the way it works take it to a shop

Posted on Feb 24, 2010

  • 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

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I have an 2008 chevy impala as that sometimes give me the message "engine power reduced" "service stabilitrak" WHAT is the problem?


When there is an error with the stability ac system the computer can reduce engine power as a safety precaution. You need to have the stored codes read.

Aug 23, 2016 | Cars & Trucks

1 Answer

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

Mar 04, 2017 | 2005 Pontiac Grand Prix GT

1 Answer

What does it mean when the "Reduced Engine Power", "Service Stability System" and "Traction Control" warning lights come on?


You may have to have the harness replaced. Be sure the connector innards stay dry.When they get wet the contacts will oxidize and start shorting to each other and also the oxide is an insulator causing connections to open. Good Luck, I had a water problem with a Ford Flex and even though covered under warranty since I was the second owner they would not honor it. It cost me about three grand so price things out before getting it fixed, the car may not be worth the investment.

Aug 24, 2014 | 2005 Pontiac Grand Prix GTP

1 Answer

What is causing reduced engine power message to come on with check engine light and service stability control warning


There are a lot of things that can cause this. Get the check engine light test done for free at a local auto parts chain.

Aug 15, 2014 | 2011 Chevrolet Silverado 1500

1 Answer

Reduced engine power signaling


Need more info. I noticed you also have a Q on here about your stability system.... Just as a guess... I'd say you have low power and a lit up dash " including the ABS light ". You need to check your ABS system first. A bad wheel speed sensor or hub bearing can cause all of this. The ECM sees it as one wheel locking up and reduces engine power and trips the Stabilitrac.

Dec 31, 2013 | 2005 GMC Yukon Xl Denali

1 Answer

Mini Cooper S Engine Management Light


The following are descriptions from the Mini-Cooper S owner's manual.

Service Engine Soon "?If the warning lamp comes on
either continuously or intermittently, this indicates a malfunction in the emissions-related electronic systems."

EML light: "Engine electronics ?Malfunction in the engine electronics. You can continue to drive with reduced engine output or engine speed."

Triangle circled by an arrow: "Automatic Stability Control plus
Traction (ASC+T)/Dynamic Stability Control (DSC)
?Indicator lamp flashes: System active: drive and braking forces are regulated.
The indicator lamp stays lit: ASC+T/DSC switched off with button or defective. In the event of a defect: please have the system inspected at your MINI Dealer."

First, inspect the belts to make sure none failed at high RPM. If one broke, inspect any cable or hoses in the plane of the belt to see if there was any damage (e. g., a ripped wire in the ASC+T/DSC system). Second, get a readout of the engine error code. (If you get indications of a major vacuum leak including rough idle, look for a blown head gasket.) If you get something else, please post the results in a comment so we can go to the next step.

Jul 09, 2017 | Mini Cooper Cars & Trucks

2 Answers

My car is saying service ESC


That light means that the computer control module has detected a fault in the Electronic stability control system and it turned on the light to alert you. Right now the system is turned off for your safety. You now need the system scanned for the fault code that is set in the control modules memory.

Jun 10, 2012 | 2009 Chevrolet Malibu

1 Answer

Can i turn off the stabilitrak of my equinox by dosconecting the battery?


Hello. sometimes you can reset the system by disconnecting the battery. but sounds like you have a electronic throttle body concern. this will cause the reduced power message and the stability light to come on. you really need to have the system scanned for trouble codes to see what is going on

Dec 18, 2011 | Chevrolet Suburban Cars & Trucks

1 Answer

My 2006 Chevy Tahoe displayed the Reduced Engine power and stability control system turned off. Drove the vehicle home at reduced power never. Temp OK, Battery gage read lower than the normal +14V, Oil...


the post that everybody refuse to read or acknowledge is the first simple instruction
when ever there is a problem , have the fault codes read first
it is free at autozone and other parts shops
then knowing what the problem is you can have it fixed at an accredited service center for less money that fixing what is not faulty costs

Apr 05, 2017 | Chevrolet Tahoe Cars & Trucks

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