2005 suburban stabilatrac disabled

Get the codes read to find the area of the faults causing limp mode

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

need codes from stabilatrac system

Turn the ignition on and press the trip/oil reset for 12 seconds.The oil change light will start to flash.When the light stops flashing the set is done.Turn ignition off.Hope this helps.Good luck.

disconecting the battery should reset the pcm. but you will need to find out what caused the problems.

take out your engine

you must drive your vehicle for 40 miles after battery replacementt to reset the system monitors

CHECK YOUR ACCELERATOR PEDAL POSITION SENSOR.LOOK FOR LOOSE BOLTS OR LOOSE CONNECTOR.THE APP SENSOR IS LOCATED ON ACCELERATOR PEDAL ARM.

Could be the fuel pump in the Gas tank. Mine crapped out and caused the car to have reduced power for awhile before it quit all together.

Display reads "Engine Power Reduced" and sometimes won't accelerate beyond idle. Other times it accelerates normally. We have not yet noticed a pattern.