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My 2005 Gmc canyon ( 2.8 L) 4 cylinder ---has been losing power,idles rough,and the reduced power and traction fault light comes on and it loses all power til i pull over and shut it off and back on

My 2005 GMC Canyon has been losing power,idles rough,and the reduced power and traction fault light comes on when it ,out of the blue starts acting up.You may be going down the road and all the sudden loses all power and idles really bad yet still runs til i can pull over and turn it on and off a few times til it smoothes back out and runs good.It does this often while driving so i took it and had it put on a machine and they diagnosed it as the throttle body so i had it replaced with a new one and it did not fix the problem.Is there anyone that can help me in finding out what is wrong with my truck?Any solutions or opinions would be greatly appreciated!Thank you.

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Posted on Jan 02, 2017

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SOURCE: ignition coil - 2005 gmc canyon

Just above each spark plug.

Posted on May 18, 2008

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SOURCE: 1991 gmc sonoma random loss of power

could be the crankshaft sensor causing the timing to be off if it has a coilpack type distributor or if it has a gear driven distributor then it could be either the distributor itself or possibly just cap and rotor

Posted on Feb 13, 2009

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05 gmc canyon traction control power fault


First you'll need to take it to have DTC's - diagnostic trouble codes check to find out what part of the system is at fault ! Could have a sensor , control module ,or wiring problem !
Traction Off Indicator The traction off indicator, which is a LED located on the traction control switch, illuminates only when the traction control switch has been pressed and released, disabling traction control. It is important to note that a traction fault does not illuminate this indicator and that there is no relationship between this indicator and the traction fault message.
Traction Fault Message The IPC displays the traction fault message when either of the following instances occur.
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The EBCM detects a malfunction that requires traction control to be disabled. The EBCM sends a serial data message to the IPC requesting that the message be displayed.


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When drive wheel slip is noted while the brake is not applied, the EBCM will enter traction control mode.
The EBCM uses a 5-volt pulse-width modulated (PWM) signal to request the PCM to reduce the amount of torque to the drive wheels. The PCM reduces torque to the drive wheels by retarding spark timing and by commanding the throttle actuator control. The PCM uses a 5-volt PWM signal in order to report to the EBCM the amount of torque delivered to the drive wheels.
You would need a factory grade scan tool to check data PID's - parameter identification , all the sensors work within a specific voltage range 1- 5 volts an you can see this on a good scan tool !
The Traction control is part of the ABS system an there a several DTC possible
DTC B0827 DTC B0828 DTC B2745 DTC C0035 DTC C0035 or C0040 DTC C0040 DTC C0055 DTC C0110 DTC C0191 DTC C0201 DTC C0220-C0229 DTC C0240 or P0856 DTC C0244 or P1689 DTC C0245 DTC C0267 or C0268 and C067 or C068 DTC C0550 DTC C0899 DTC C0900
You best bet is to take it to a qualified repair shop !

You

Apr 07, 2015 | 2005 GMC Canyon

1 Answer

What does "Reduced Power, Traction Fault" mean?


GM's power strategy will reduce power if it doesn't see proper charging. It does this to conserve battery power by shutting off non-essential electrical accessories. It can also mean that the traction control system is reducing engine power to avoid a skid. The traction control system gets input data from the wheel speed sensors to figure out if you're entering a skid or the wheels are locking up. One way to get you out of the skid is to reduce engine power or pump your ABS brakes. In your case you should get the trouble codes read. An ABS or traction code code could be a C, U or B code which can't be seen by a cheap scan tool or the tools they use at auto parts stores. GM had major problems with the ABS wheel speed sensors built into the wheel bearing hubs in these vehicles. The fix involved replacing the hub. So get the codes read by a pro scanner to find out which wheel sensor is setting the code. Then do the fix. Also, the P0128 is usually caused by a bad thermostat. Fix that first, because if the engine doesn't get up to operating temperature, the computer can limit some features.
Read these posts for more trouble code information
http://ricksfreeautorepairadvice.com/p0128/
http://ricksfreeautorepairadvice.com/abstcs-light/

Jun 26, 2017 | 2005 GMC Canyon Crew

1 Answer

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1 Answer

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1 Answer

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1 Answer

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2005 GAm CAnyon Engine idle rough


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