My 2016 1.5T LT threw up the check engine light along with reduced engine power. Traction Control Light is on Inspection: $79.99 - $89.99: I will be driving and then out of nowhere the car will slow down, check engine light comes on and the message “engine power reduced” and “low traction” will come up. Modern vehicles which use this feature are pre-programmed to limit the performance of the vehicle to prevent further damage. I can shut off engine and let sit for 30 seconds and re fire and keep going with 0 issue. Turning the car off an on fixed the power problem the … The reduced engine power warning message can come on your car or truck.Today’s vehicles are for the most part completely electronically controlled. What Does the ‘Reduced Engine Power’ Warning Light Mean? 11 Silverado 1500, been throwing a code where it cuts off power, and traction control and stabilitrak are shut off. Recommended Services. Traction control, stabilitrak, engine power reduced. Apr 13 2019, 2:29am. Sometimes, it can be a dangerous situation. And boy did it reduce. When specific faults are detected electronically, the engine control module begins the process of limiting vehicle speed, gear range, and engine power. Reduced Engine Power – What’s Causing It And How To Fix It. I travel 40+ miles each way to work in Atlanta traffic with speeds around 65-80 (big trucks). Keep in mind when I mention Chevy I'm also including the GMC trucks in this article as well. Back in the day, before these electronically controlled throttles, everything was cable actuated. From every button and switch on the dash down to the ‘fly-by-wire’ throttle control system. Unfortunately, the reduced engine power issue on Chevrolet trucks has more than one possible root cause. The reduced engine power light is a bright yellow indicator on the dashboard of some vehicles that shows there is a problem with the power source of a car or truck. Engine power reduced 1 Answer. You have to watch what’s going on all around you and be very aware of staying out of the way of faster-moving traffic. Stabilitrak and traction control needs Servicing with the message of reduced engine power have to turn off and restart engine to get it to full power but message reappears after a few minutes & engine light is on. I am so frightened that this will occur when I am on my way to work and no time to recover and get off to a safe location. The check engine light came on and then 'Engine Power is Reduced' 'Service Traction Control' 'Service Stabilitrak' popped up. I took the car to my wife's uncles shop as he only charges us for parts and I don't have anywhere to work on it myself. The reduced power displays on the console, the car slows to a crawl and the Check Engine light comes on. At all. 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