Back in the day, before these electronically controlled throttles, everything was cable actuated. The reduced engine power warning message can come on your car or truck.Today’s vehicles are for the most part completely electronically controlled. Driving along and suddenly noticing that you have reduced engine power isn’t a feeling anybody likes. Keep in mind when I mention Chevy I'm also including the GMC trucks in this article as well. Traction Control Light is on Inspection: $79.99 - $89.99: Reduced Engine Power – What’s Causing It And How To Fix It. 11 Silverado 1500, been throwing a code where it cuts off power, and traction control and stabilitrak are shut off. From every button and switch on the dash down to the ‘fly-by-wire’ throttle control system. Modern vehicles which use this feature are pre-programmed to limit the performance of the vehicle to prevent further damage. The reduced power displays on the console, the car slows to a crawl and the Check Engine light comes on. 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. Sometimes, it can be a dangerous situation. 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. And boy did it reduce. What Does the ‘Reduced Engine Power’ Warning Light Mean? My 2016 1.5T LT threw up the check engine light along with reduced engine power. Recommended Services. At all. Traction control, stabilitrak, engine power reduced. Engine power reduced I realized I have a fuel problem but the specifics are very limited because I bought this car used in august and problems started coming about a month ago.. I’d drive maybe 5-6 miles if not more before it starts to go into that mode and now My check engine … I travel 40+ miles each way to work in Atlanta traffic with speeds around 65-80 (big trucks). Nothing better than going down the highway and the the car has no grunt anymore. When specific faults are detected electronically, the engine control module begins the process of limiting vehicle speed, gear range, and engine power. Turning the car off an on fixed the power problem the … The check engine light came on and then 'Engine Power is Reduced' 'Service Traction Control' 'Service Stabilitrak' popped up. I can shut off engine and let sit for 30 seconds and re fire and keep going with 0 issue. 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. Unfortunately, the reduced engine power issue on Chevrolet trucks has more than one possible root cause. 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