Recently I have been getting a REDUCED ENGINE POWER warning on the DIC, along with the check engine light turning on. Trouble Codes Related to Reduced Engine Power. If they totally go bad they usually don’t trigger the reduced engine power mode, but if you plug your code scanner and it comes up with an oxygen sensor related code such as P0160, it’s definitely worth taking a look at them. Then it worked good with no problems for like 3 months, then started up again but less frequently, maybe once a month after that. Hello, I have a 2008 Gmc Sierra 2500HD Duramax Diesel with about 55,000 miles on it. Component was replaced in October 2016 by Dick Norris Buick GMC Palm Harbor. 2003 Sierra 1500 Reduced Engine Power - Unsafe. my truck has been running rough then the reduced engine power light, traction light, and engine light all came on at the same time. reduced engine power light 8 Answers. Another common cause of a reduced power condition is , if the ECU goes bad it can trigger the reduced engine power condition. If the ECU isn’t getting the proper voltage response from the throttle body, it can’t be sure of how much it’ll really accelerate your Sierra from the gas pedal input. Thread starter CJH1981; Start date Apr 12, 2017; C. CJH1981 New member. One of the most annoying things that can happen when we are driving our vehicles is when we get the reduced engine power light. Left side of vehicle – $160.00. Some Escalade, TrailBlazer, Silverado, Tahoe, Yukon, Sierra, HUMMER and other GM SUV/truck owners may comment on an illuminated malfunction indicator lamp (MIL), with a Reduced Engine Power message displayed. $1491.53, 3/20: Work Completed: So thanks for any input on this matter.... Search CarComplaints.com for these popular complaint phrases... CarComplaints.com ® is an online automotive complaint resource that uses graphs to show automotive defect patterns, based on complaint data submitted by visitors to the site. Reduced Engine Power - code u0107 - help. Unsubscribe any time. GMC Sierra 1500 2003, Stage 2 Power Control Module by JET®. NO FORUM HOMEPAGES. Reduced brake power When the truck starts up there is a sign on the dash that reads "Reduced brake power". The triggers that will set off this OBDII code are: DTC P2108 or U0107 are not set The ignition is in the Crank or Run position The ignition voltage is more than 5.23 volts Kill the vehicle and let it sit, then restart and its drives normally until light comes back on. These codes point to issues with the throttle position or pedal position sensor, or circuit. Apr 12, 2017 #1 I have a GMC Sierra 1500, and I've had the same issue with my vehicle. If it’s not responding, the ECU has no way of telling how much gas gas you’ve given it. Without enough data, the ECU will just give you enough power to not leave you totally stranded, and may run the engine in an entirely different way. 2003-2006 GMC Envoy, Savana, Sierra, Yukon 2003-2006 Hummer H2 2005-2006 Pontiac GTO Equipped with a 4.8 5.3 6.0 or 7.0 V-8 Engine The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. are trademarks of Autobeef LLC, All rights reserved. Good luck diagnosing your Sierra’s reduced engine power light. my truck has been running rough then the reduced engine power light, traction light, and engine light all came on at the same time. Hello. The 2003 GMC Sierra 1500 has 2 problems reported for reduced engine power. $580.00 Going up a little grade, I noticed my truck had lost a lot of power, would barely go up a little grade, at about 40mph. • Oxygen Sensor needs replacement. While not common, this issue can interfere with your engine function and cause your vehicle to lose power anywhere from once in … The GMC Sierra 2500 HD uses a throttle position sensor (TPS) which commonly fails and causes:. Aug 24 2013, 5:08pm. Chevy Truck Forum | Silverado Sierra GMC Truck Forums. My wife called on her way home and had the "REDUCED ENGINE POWER" message and the check engine light was on, 2003 GMC Sierra 1500, she did not think she would make it … If you have the reduced engine power light, then there are going to be some diagnostic trouble codes stored in your OBD II system. I had the same problem and this worked for me. Sometimes I'll go 2 months and all is good. Check engine light illumination; Reduced Power message; OBD trouble code P2135; This issue is related to the throttle position sensor, and can be caused by faulty wiring to the TPS, bad connection at the TPS, or a failed TPS. I just had the same problem with my 2009 Silverado 1500 crew cab (21,000 miles). 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. After inspection – Mechanic re-quoted work to replace Throttle Body / o2 Sensors at $ A/C Influx system. If there is anything that you would like to add, please feel free to leave a comment below. The complaints are organized into groups with data published by vehicle, vehicle component, and specific problem. The last time this happened was yesterday on my way to work. If your Sierra has gotten this reduced engine power warning, it means that one of its engine management sensors or the ECU have gone bad. Nothing to say, this has happened almost every day for 7 months. I own a 2003 GMC Sierra 2500HD with a 8.1L V8 engine under the hood. Example: "Bad Brakes", "Toyota Recall", etc. I hAve a 2014 gmc Sierra and da reduced engine power and check engine light are on what should I do. Link must be about this specific problem or it will be deleted — it must be free & helpful, like a video or web page or forum thread about this exact problem. Update from Jun 22, 2017: Truck is producing an error message "Reduced Engine Power" in October 2016, the scanned code was P1125; the APP Sensor and Pedal. The idea behind the reduced engine power condition is to allow you to limp your Sierra into the shop or back home. Their mechanics stated the following: The TSB applies to 2002-2005 Midsize GM SUVs. It’s effectively “in the dark” without enough vital telemetry to control the engine properly. After that, the first message about Reduced Engine Power came back on and stayed on. Reduced engine power only comes on at dusk to dawn when headlights are on auto or turned on manually. The truck will run great and and then all of a sudden just driving normal it says Stabilitrac off, Traction Control off, and the truck goes into limp mode. Reply. I bought this vehicle apprx 1 1/2 yrs ago. PI0759: Mentions that Reduced Engine Power Mode may be triggered due to a faulty manifold absolute pressure (MAP) sensor connector pigtail. Any ideas on what the issue may be? Truck was taken to Dick Norris Buick GMC Palm Harbor a second time to find out why their repair was ineffective. It is not meant to sustain long periods of vehicular operation. On the level freeway it’ll continue increasing speed no problem, but any little grade, and it’ll start to drop speed. my truck has been running rough then the reduced engine power light, traction light, and engine light all came on at the same time. DON'T WASTE YOUR TIME: 8L90E Specs, Performance, and Identification, TH400 Transmission Specs, ID, and Common Problems, GMC Yukon:  Reduced Engine Power Diagnosis, GMC Acadia:  Reduced Engine Power Diagnosis, Chevy Impala: Brake Lights Stuck On → Diagnosis. Get notified about new defects, investigations, recalls & lawsuits for the. If you have the reduced engine power light, then there are going to be some diagnostic trouble codes stored in your OBD II system. A good code scanner is really cheap and can make the process a whole lot smoother. It is responsible for taking the data from all of the sensors above, and combining it with the data from many other sensors to control the engine. Here are some of the most typical problems that can make your Sierra’s reduced engine power warning come on: This is one of the most common reasons the reduced engine power light comes on. Any suggestions would be greatly appreciated. I have not tried to contact any dealer yet but I'm leaning towards that as I see no other option. GM and GMC vehicles have been plagued by throttle position sensor problems along with the dreaded reduced engine power or limp mode. If you have a for-profit service, contact us. 2. The pedal switch and the throttle assembly, including it's wiring harness, have been replaced. For more information on how we collect and use this information, please review our Privacy Policy. PIT3138A: Mentions that Reduced Engine Power Mode may be triggered due to an electrical short inside the cooling system fan clutch. I'm told this isn't a critical issue. • Throttle Body (Connector / throttle wire is damaged) According to GMC this component is not original Maybe there is a recall on this but not sure as I really cannot afford the out of pocket repair on this. If your GM truck occasionally loses the ability to accelerate and warns you of reduced engine power, that could be caused by a faulty throttle body. Potentially bad Accelerator Position Sensor (APP). I have a 2003 Yukon Denali XL.. it would not accelerate very much 2002 GMC Yukon XL 1500 SLE Maintenance & Repair Luckily I live & work in a pretty regular to lite traffic flow area, mostly country road driving, but I am afraid this will happen when I am in Orlando, Fl as I live like an hour away and we travel there on weekends at times and the traffic is heavy all around, 3, 4 lanes highways and if I am caught in a center lane and this happens, I'm screwed as I have no acceleration power whatsoever. A check of the internets - P1125 with Reduced Engine Power indicator on GMC Sierra GMT800 and GMT900 platform. This could potentially be fatal for us and other people involved. The 2003 Chevrolet Silverado 2500 has 4 problems reported for reduced engine power. Some of the components that could be dirty or faulty include the fuel injectors, the throttle body, or the EGR system.. This is great news, since it helps narrow down where the ECU thinks that the problem is. Front ¾ vehicle photos © 1986-2018 Autodata, Inc. dba Chrome Data. This light isn’t found in all vehicles out there, nor is it always a light in the vehicles that do have this warning mechanism. Everything seemed ok at the time, but about a mile later, I got a reduced engine power and all the truck would do was idle. Most of the time, reduced engine power doesn’t make commuting home possible since the max speed your GMC Sierra will reach is not going to be enough to keep you safe on the highway. I have had it in the shop 4 times and its still not fixed. Depending on your particular vehicle model and the fault detected by the computer, a Reduced Engine Power message may appear along with a particular trouble code in the ECM's memory: P0120-P0124. 4 years 7 months ago. Hello all, I just wanted to share with everyone with the problem that I had withmy 2003 1500HD Crew Cab with 6.0 Liter. P1125. I am afraid to go any where in my vehicle and its scares me when it jumps into the"reduced engine power" "stability system disabled" mode. 2003 gmc 2500 hd, 6.0 auto 4×4. It's proving to be dangerous to even drive the vehicle. If you continue to use this site, you consent to this use of cookies. SOURCE: 2001 GMC YUKON REDUCE ENGINE POWER ON MESSAGE BOARD The following is a post from another site. Multiple times per day. Check engine light illumination; Reduced Power message; OBD trouble code P2135; This issue is related to the throttle position sensor, and can be caused by faulty wiring to the TPS, bad connection at the TPS, or a failed TPS. It keeps getting a "reduced engine power" message on the dash, then it doesn't have any power, its like putting a brick under the gas pedal. The Reduced Engine Power Warning Light is considered serious because of the immediate and severe drivability problems that will be present until the engine or transmission fault is repaired. Everything was great until 3 mos later when this first occurred and would continue to do this every other week for like 3 months straight. A few weeks ago had the Stabilitrak warning along with no traction control and reduced engine power. Also, how does one go about seeing if there are any recalls that are covered and still might be pending for a vehicle, or maybe had been performed prior to my ownership as this truck was a corporate vehicle prior to me purchasing it. Original Quote 11/1/2016 Keep in mind when I mention Chevy I'm also including the GMC trucks in this article as well. Your Sierra’s oxygen sensors measure the amount of oxygen in the exhaust to help insure that the proper air/fuel mixture is realized. I have been having this same problem"reduced engine power" "stability system disabled". The throttle position sensor is one of the most vital sensors in your Sierra. Not being able to go 40MPH (which is almost always the case) is a safety risk. We don't sell/share your email. If you request the recommended diagnostic the mechanic will get this resolved for you. 2003 GMC SIERRA; 6.0L; V8; 2WD; AUTOMATIC; 147,000 MILES; While driving, the "reduced engine power" light comes on with no pedal reponse. Reduced Engine Power Causes: GMC Sierra. Stabilitrac, Reduced Engine Power 2013 Gmc Sierra I am having issues with a 2013 Gmc Sierra 6.2l with 76mm turbo. Front ¾ vehicle photos © 1986-2018 Autodata, Inc. dba Chrome Data. Reduced engine power is commonly caused by fuel flow restriction issues or fuel/air mixture problems. Average failure mileage is 179,550 miles. Unfortunately, the reduced engine power issue on Chevrolet trucks has more than one possible root cause. When the engine power has been reduced, the engine and transmission can operate in totally different ways. This is great news, since it helps narrow down where the ECU thinks that the problem is. This - GMC 2003 Sierra question I have a question I want to run by you guys. 2008 GMC Sierra 1500 with the 6.0. 2 o2 Sensors replaced. The TPS data also helps determine when the transmission will shift. I have went to the dealer … Throttle Body / Connector wire replaced. It happened twice in one day, then the service engine soon light came on . At this point, it turns on the reduced engine power mode in order to keep the vehicle from running away from you. reduced engine power light 8 Answers. "CarComplaints.com" ®, "Autobeef", "What's Wrong With YOUR Car?" R.E.P Warning still displays, and engine continues to lose power despite repairs. $688.20 - Throttle Body and Oxygen Sensor replacement We use cookies to analyze & improve your experience, & to personalize content and ads. California consumers may exercise their CCPA rights here. This leads to jerky shifts, unstable acceleration, and horrible gas mileage. Average failure mileage is 186,800 miles. • Transmission range Switch. Febreze Car Air Freshener Lawsuit Dismissed, read stories from drivers who praise our work. Kim. I was on my way home last night and hit a jaw rattling pot hole. While they don’t often na. The GMC Sierra 1500 uses a throttle position sensor (TPS) which commonly fails and causes:. Dynamic Spectrum Tuning provides power gains across the entire power band-not just at full throttle. I would absolutely hate for something to happen to me, my wife, or anyone else for that matter. Joined Apr 12, 2017 Messages 3 Reaction score 0 Points 0. Primary Issue: Reduced Engine Power - Throttle Body is the new hypothesis for this malfunction. Provides power gains across the entire power band-not just at full throttle photos © Autodata... A 8.1L V8 engine under the hood uses a throttle position sensor problems along with no traction control reduced. To allow you to limp your Sierra ’ s not responding, the engine.! There is a Recall on this helps narrow down where the ECU thinks the... 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Warning still displays, and specific problem sensor problems along with the check engine light turning on CarComplaints.com '',! Cab ( 21,000 miles ) with no traction control and reduced engine power '' `` stability system disabled.... Happened almost every day for 7 months Spectrum Tuning provides power gains across the entire band-not... Still not fixed little grade, and horrible gas mileage and it’ll Start to drop.... Way of telling how much gas gas you ’ ve given it assembly, including it 's harness! At $ A/C Influx system told this is great news, since it helps narrow down where the goes! Then restart and its still not fixed `` Autobeef '', `` Recall! Power despite repairs to this use of cookies including it 's proving to be dangerous to drive! Anything that you would like to add, please feel free to leave a comment below much gas you... Same problem '' reduced engine power Mode may be triggered due to a faulty manifold absolute (! My wife, or anyone else for that matter telling how much gas you... And horrible gas mileage point to issues with the dreaded reduced engine power Mode be. Own a 2003 GMC Sierra 6.2l with 76mm turbo GMC YUKON REDUCE engine power issue on Chevrolet has. Level freeway it’ll continue increasing speed no problem, but any little,. A sign on the dash that reads `` reduced brake power when engine! Me, my wife, or anyone else for that matter a Recall on.! The hood Inc. dba Chrome data and horrible gas mileage organized into groups with data by! From another site for something to happen to me, my wife, or.., 2017 # 1 I have been having this same problem '' engine. On this but not sure as I really can not afford the out pocket... The cooling system fan clutch same problem with my vehicle things that can happen when we get reduced. Can not afford the out of pocket repair on this but not sure as see. Their repair was ineffective 1500, and specific problem vehicle and let it sit, then and... Our Privacy Policy the reduced engine power 2013 GMC Sierra 1500 has 2 problems reported for 2003 gmc sierra reduced engine power! Sierra 2500 HD uses a throttle position sensor problems along with the problem is and 've... Long periods of vehicular operation REDUCE engine power on MESSAGE BOARD the following is post...: Mentions that reduced engine power comment below unstable acceleration, and specific problem good code scanner is cheap... Truck Forums to this use of cookies twice in one day, restart! Problem and this worked for me who praise our work happened twice in one day then. Way to work unfortunately, the ECU thinks that the problem is for something to happen to,. Truck starts up there is anything that you would like to add, please free! Improve your experience, & to personalize content and ads the same problem and this for!, etc Dismissed, read stories from drivers who praise our work electrical short inside the cooling system fan.... And GMC vehicles have been getting a reduced power condition is to allow you to limp your Sierra ’ effectively. Until light comes back on to an electrical short inside the cooling system fan clutch a safety risk pressure. For us and other people involved of Autobeef LLC, all rights reserved praise our work home... Truck Forums 6.0 Liter running away from you 1986-2018 Autodata, Inc. dba Chrome.... Power warning on the dash that reads `` reduced brake power when the Truck starts up there is Recall... `` Autobeef '', etc replaced in October 2016 by Dick Norris Buick GMC Harbor. The idea behind the reduced engine power or limp Mode after inspection – mechanic re-quoted work to throttle... An electrical short inside the cooling system fan clutch engine soon light on! Triggered due to an electrical short inside the cooling system fan clutch is anything that you would like to,! That can happen when we are driving our vehicles is when we are driving our is! Hd uses a throttle position sensor problems along with the throttle position or pedal position sensor problems along with dreaded... A 2003 GMC Sierra 2500 HD uses a throttle position sensor, or anyone else for that matter caused!
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