You can either disconnect the battery for a few minute, or use a scan tool to clear them. I am ready for the delete and say screw the warranty.. Well maybe.. Silverado Double Cab Standard Bed 2WD with available 5.3L V8 engine and Max Trailering Package. Warning lights- engine light. (Photo courtesy Chevy) In a surprising move, the 2021 Chevy Silverado 1500 Duramax diesel will see a big drop in the stated MPG ratings versus the prior year, and nothing significantly changed from the 2020 model. I have a 2007 Silverado (new body) and just recently I started getting a "reduced engine power" notification in my DIC. Roy R. April 9, 2020 27 Views 1 Answer Joseph S. answered on April 9, 2020 Reduced engine power means that the car is gone into failsafe mode. I over fuled my car so I had to change my engine the person who changed my engine for what ever reason did not change the airloom cable it said ‘ engine power is reduced ‘ and I was not able to drive over 30 mph .. Now the air loom cable is swapped over and codes have been rested and the new people I have taken it to have said their not sure why it’s still there . However, the 2020 model has already racked up four recalls, according to the NHTSA. The second generation Sonic began with the 2012 model year and … 2. “Reduced Engine Power” Warning Light. They replaced my wireless Throttle Body with a new one that has its own "motor" and wires running to computer and such and she runs like a champ ever since. However it’s happened about every 2nd or 3rd day for about 2 weeks now. The only way to fix it now will be to take it to the dealer and get a regen done with the tech 2. The dealership will pay for tow. Reduced Engine Power Causes: Chevy Equinox. 117 Comments on "Reduced Engine Power Warning And Check Engine Light", I replace the throttle pedal in the engine light still come on saying throttle pedal, I just went through replacing throttle body, connectors, accelerator pedal sensors and throttle position sensor, and that didn’t fix it, BUT I unplugged the AIR Solenoid on top of engine and that was the problem, we’ll be tracing down those wires and connectors tomorrow. There is no rym or reason as to the time of day or volts being pulled from the battery. They also have a couple position sensors inside it and can have the same correlation error, but also a few added things as well. Chevy dropped the 307 V8 engine in 1973 and replaced the 402 with the more powerful 454. I haven’t had a problem since I repaired it. My vehicle would randomly go into a low power mode. Engine Power Is Reduced.. Sep 07 2013, 6:51am. Truck still runs great as long as the Reduced Power Mode doesn’t come on. Could you tell me what the problem could be. I have a 2003 4×4 LT Chevy Tahoe with over 240k miles. All of these need to communicate with each other properly so as to deliver the proper throttle angle input by the driver. (or they should) They did for me when hubs went out. oʊ / ə-VAY-oh) (sold as Chevrolet Sonic in North America and parts of Asia since 2011) is a subcompact car manufactured since 2002 (by Daewoo from 2002 to 2011), marketed worldwide in 120 countries under seven brands (Chevrolet, Daewoo, Holden, Pontiac, Ravon and Suzuki). Find your perfect car with Edmunds expert reviews, car comparisons, and pricing tools. Not sure if reduced power varies from gas to diesel and such but that was my issue with this buuullshiit. !! First off, inside the accelerator pedal, there are a couple of position sensors that tell the computer where exactly, or rather how far pushed down, the pedal is. See the Owner’s Manual and the label on the vehicle door jamb for the carrying capacity of a specific vehicle. 3500 HD models, with the available Duramax 6.6L V8 engine, have a ring gear size of up to 12 inches, which allows for more torque coming out of first gear. Had very similar issues with my 2008 gmc savana 1500 like everyone else. I just got a Duramax myself and don't know a lot about them. I ignored it. And then do the reset….. that way everything is working the way it’s supposed to whend it starts fresh. I was on the highway driving and pulled off into a mall and my check engine light came on and the truck started missfiring and sputtering like it … (Had I been given the option from the shop at that time, I would have.) You quite obviously cannot drive these trucks in town much without them getting temper mental. when come to a stop and give it gas its not speeding up like it should its like losing power. If you have the reduced engine power light, then there are going to be some diagnostic trouble codes stored in your OBD II system. Back in the day, before these electronically controlled throttles, everything was cable actuated. Just so happens I talked about wanting to sell a week prior to this issue starting, and it’s happened now about 10times within the last 3 weeks! Helpful Leave your answer . Does any one have any suggestions? Also got the map sensor but was given a different part. There is a multitude of problems that can happen if either the electronic accelerator pedal, or electronic throttle body have an issue. When we reached our destination we shut off the truck and it did not start after that point. Just had my 2009 Sierra 2500HD Duramax serviced with new fuel filter and Air Filter yesterday. have you seen this problem corrected by replacing the camshaft sensor? i real don’t think knock sensor will help. Power's rating for the 2020 Chevrolet Silverado 1500 is a solid 83 out of 100. I read Ken’s response to the daytime vs nighttime issue. I’ve purchased 2 batteries since this problem arose. They also gave me a car to drive while mine was being repaired. I have an 08 chevy Silverado 2500 hd 4×4. I need some help. JS maybe something there. But if they do, call a tow truck and have him take it to dealership. You’ll notice there are no provisions for cables, just electrical connectors on each component. My 2004 Chevy Silverado 2500 HD is showing a reduced engine power message. I pulled the two relays for high and low beam lights and it runs fine with no reduced power message. and replacing the battery? On my way out to the highway my check engine light came on, so I called onstar to have them check the code. Seems to this old school mechanic that I have maybe several bad grounds, any thoughts? Same exact problem. I re-attached the wire. The 2006 chevrolet silverado reduced engine power light signals that there is a problem with the battery or the power system. We’ve taken it to get looked at once so far where they ran diagnostics and drove it a little bit, and said it was perfectly fine. What get me is this intake kept all stock components, (filter minder, and MAF sensor..) and provides a better air flow to my engine but it voids the warranty? The reduced engine power light comes on when the vehicle’s computer detects a fault in any of the systems that allow the engine to run optimally, such as airflow sensors, throttle sensors and oxygen sensors. Code reader shows po641 which is a 5 volt circuit reference. Thanks Walter that seems to have been my problem it worked for me but my positive cable needed tighten. There are many, many service bulletins that address all of these problems, so taking your vehicle to the dealership is always recommended when you have an issue like this to get it corrected quickly and accurately. This is great news, since it helps narrow down where the ECU thinks that the problem is. could the use of E85 cause “reduced engine power warning and check engine light? This allegedly causes vehicles to suddenly lose power and slow down to 20 miles per hour—even when driving at highway speeds. terminal of the battery. I have a 2002 GMC Envoy since I’ve had it for about a year now I’ve been having the issue with the reduced engine power light & while that light comes on the service engine soon light also comes on but the thing is mine only did this when it was cold or chilli outside about 60 & below it would stall & those lights would pop on and it’ll start shaking a little bit. This allowed us to drive about 2 miles going about 10-15 mph! I'm currently trying to talk myself out of buying one haha. I have a 2004 Chevy Silverado 4.3 1500 when I’m going up a steep hill my check engine light flashes 2 times and I tend to lose horsepower I replace a Cadillac converter already twice and my transmission is rebuilt what could be the problem, i had the same problem my reduced engine power comes on so i couldnt do more than 15 miles per hour i pull over turn car off for 5 minutes turn back on no problem it would run until happen again it was my TPS i changed it 70 dollar part took 5 minutes no problem since then. From every button and switch on the dash down to the ‘fly-by-wire’ throttle control system. We recently got several question about the octane gasoline fuel requirements for newest trucks. And if I do.. Will it fix it?? Below are a couple pictures of an electronically controlled throttle body and accelerator pedal. the dealer said G M had a recall on the T B I and it was fixed at no cost to me. Help!! When the NP203 transfer case became available for models with the V8 engine, it had full-time four-wheel drive. Sure my warranty will cover it but who wants a brand new truck with problems. And still no luck. Excessive Oil Consumption. I don't know a whole lot about diesel myself, But I'm sure close to half the members on here do! The smaller one goes to a body to frame bracket. Going crazy tracing wires!! This will set a trouble code and often times limit input by the driver to avoid engine damage. if its the cam or crank sensor it will kill the motor. just have your local auto store check the batter if its good. With these added controls, there is even more chance of setting the check engine light on because of trouble codes or problems with these systems. This could be due to a grounding issue where the ground strap has corroded or become loose. Lol. Vehicle maintenance plays a big part here, so keep up on it and you should have little or no problems at all! Usually, the only sensor you would have on the previously cable controlled systems would be a throttle position sensor. The LS based small-block engine is the primary V-8 used in General Motors' line of rear-wheel-drive cars and trucks. Average failure mileage is 186,800 miles. We replace the throttle body but the idle is not right. Reduced Power message. What could b the problem r what do u think I should try next that would fix my problem. This little gadget, as it’s name implies, is responsible for monitoring the air that is drawn into your car’s engine. Hi Dean! 10 minutes later we came back out and started up car started driving away and we lost all power and check engine light and transmission light came on and car wouldn’t move. Although it was secure, it was rusted. your good. 2004 Chevy Silverado V8 Automatic 195, 00 miles While driving, slow, fast, rough roads, interstates, cold engine, hot engine, the truck slows and an indicator reading states. 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