The truck has had a serious engine code sent to the computer. You can shut it down and try to restart and see if the problem goes away however you must get the code read and find out the cause. It can be many things.
www.trailvoy.com Trailblazer/Envoy enthusiasts forum
The reduced engine power light means that there is a problem with the battery or power system. It almost always means a battery connection issue.
Time to buy a new car.
Had the same problem. Throttle Body Sensor was bad and needed to be replaced.
gmc serra engine power reduce,can't drive no power
I have a 2006 Saturn ion. The reduced engine power light came on and the car still runs but will not accelerate and only goes 30mph
The engine power reduced light will turn on in Chevrolet HHR when a failure is detected in one of the sensors or engine components. An OBD II code reader can determine the cause and help with making repairs.
Get the computer scanned to see what the problem is.
It usually means that the vehicle has sensed a slipping wheel and has cut a little power to stop the slipping.
When my Reduced Engine Power Light came on in my 2004 Envoy it ended up being the entire pedal assembly and the electronics that control it. If I remember correctly it ended up setting me back around $500.00. Hope this helps!!
Have vehicle scanned to determine the problem and reset codes
== == well first what is a light bull do you mean a light bulb?
If the check engine light code is "Random Multiple Misfirings", you need a tune up. Have the spark plugs and wires changed. The loss of power is due to misfirings.