Question about 2004 Chevrolet Colorado

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What does reduced power traction fault mean? When I crank my 2004 chevy colorado up it will istantly die and then I have to wait a few minutes and crank it up again, it will die again. After I am able to get it started I can drive it down the road for a few minutes and it will die. I still have power to lights, stero, all other electronic device's.

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  • Chevrolet Master
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Other people I've read about have this problem which may be attributable to a bad PCM connector or even bad gasoline (I've read).

One person had a random fault code that went away with driving.
They only had 4600 mi. on their vehicle.

Good luck on this one.

Posted on Jul 05, 2010

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  • Chevrolet Master
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The first thing to do is scan the computer for codes, these codes will help in pin pointing the problem to diagnose, also make sure the battery is tested and is good, a weak battery can cause lots of problems in todays cars with all the electroinics.also have the alternator tested.

Posted on Jul 05, 2010

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Posted on Jan 02, 2017

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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.
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Reduced power code comes up and my truck stalls.


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