I'm told this isn't a critical issue. Front ¾ vehicle photos © 1986-2018 Autodata, Inc. dba Chrome Data. reduced engine power light 8 Answers. Average failure mileage is 179,550 miles. • Oxygen Sensor needs replacement. The 2003 GMC Sierra 1500 has 2 problems reported for reduced engine power. PIT3138A: Mentions that Reduced Engine Power Mode may be triggered due to an electrical short inside the cooling system fan clutch. Component was replaced in October 2016 by Dick Norris Buick GMC Palm Harbor. I was on my way home last night and hit a jaw rattling pot hole. I had the same problem and this worked for me. Average failure mileage is 186,800 miles. Nothing to say, this has happened almost every day for 7 months. After that, the first message about Reduced Engine Power came back on and stayed on. This could potentially be fatal for us and other people involved. Trouble Codes Related to Reduced Engine Power. 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. I bought this vehicle apprx 1 1/2 yrs ago. Not being able to go 40MPH (which is almost always the case) is a safety risk. 2003 GMC SIERRA; 6.0L; V8; 2WD; AUTOMATIC; 147,000 MILES; While driving, the "reduced engine power" light comes on with no pedal reponse. If it’s not responding, the ECU has no way of telling how much gas gas you’ve given it. Any suggestions would be greatly appreciated. Joined Apr 12, 2017 Messages 3 Reaction score 0 Points 0. 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. Original Quote 11/1/2016 Left side of vehicle – $160.00. 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. Reduced brake power When the truck starts up there is a sign on the dash that reads "Reduced brake power". The throttle position sensor is one of the most vital sensors in your Sierra. 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. 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. On the level freeway it’ll continue increasing speed no problem, but any little grade, and it’ll start to drop speed. If you have a for-profit service, contact us. Maybe there is a recall on this but not sure as I really cannot afford the out of pocket repair on this. 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 good code scanner is really cheap and can make the process a whole lot smoother. The last time this happened was yesterday on my way to work. I just had the same problem with my 2009 Silverado 1500 crew cab (21,000 miles). If there is anything that you would like to add, please feel free to leave a comment below. • Throttle Body (Connector / throttle wire is damaged) According to GMC this component is not original Chevy Truck Forum | Silverado Sierra GMC Truck Forums. Hello, I have a 2008 Gmc Sierra 2500HD Duramax Diesel with about 55,000 miles on it. 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. Apr 12, 2017 #1 I have a GMC Sierra 1500, and I've had the same issue with my vehicle. NO FORUM HOMEPAGES. GMC Sierra 1500 2003, Stage 2 Power Control Module by JET®. 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. PI0759: Mentions that Reduced Engine Power Mode may be triggered due to a faulty manifold absolute pressure (MAP) sensor connector pigtail. 2003 gmc 2500 hd, 6.0 auto 4×4. It's proving to be dangerous to even drive the vehicle. The TSB applies to 2002-2005 Midsize GM SUVs. This is great news, since it helps narrow down where the ECU thinks that the problem is. Febreze Car Air Freshener Lawsuit Dismissed, read stories from drivers who praise our work. I have a question I want to run by you guys. Unfortunately, the reduced engine power issue on Chevrolet trucks has more than one possible root cause. 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. 2. This is great news, since it helps narrow down where the ECU thinks that the problem is. 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. Throttle Body / Connector wire replaced. 2 o2 Sensors replaced. Any ideas on what the issue may be? 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. Recently I have been getting a REDUCED ENGINE POWER warning on the DIC, along with the check engine light turning on. Reduced Engine Power Causes: GMC Sierra. At this point, it turns on the reduced engine power mode in order to keep the vehicle from running away from you. 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. Another common cause of a reduced power condition is , if the ECU goes bad it can trigger the reduced engine power condition. Thread starter CJH1981; Start date Apr 12, 2017; C. CJH1981 New member. 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. $580.00 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. Some of the components that could be dirty or faulty include the fuel injectors, the throttle body, or the EGR system.. The GMC Sierra 2500 HD uses a throttle position sensor (TPS) which commonly fails and causes:. I have a 2003 Yukon Denali XL.. my truck has been running rough then the reduced engine power light, traction light, and engine light all came on at the same time. Potentially bad Accelerator Position Sensor (APP). Keep in mind when I mention Chevy I'm also including the GMC trucks in this article as well. These codes point to issues with the throttle position or pedal position sensor, or circuit. 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 continue to use this site, you consent to this use of cookies. I have went to the dealer … Reply. It happened twice in one day, then the service engine soon light came on . 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. Front ¾ vehicle photos © 1986-2018 Autodata, Inc. dba Chrome Data. 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. A check of the internets - P1125 with Reduced Engine Power indicator on GMC Sierra GMT800 and GMT900 platform. • Transmission range Switch. California consumers may exercise their CCPA rights here. Reduced Engine Power - code u0107 - help. It’s effectively “in the dark” without enough vital telemetry to control the engine properly. "CarComplaints.com" ®, "Autobeef", "What's Wrong With YOUR Car?" I would absolutely hate for something to happen to me, my wife, or anyone else for that matter. 4 years 7 months ago. It is not meant to sustain long periods of vehicular operation. The 2003 Chevrolet Silverado 2500 has 4 problems reported for reduced engine 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 Truck was taken to Dick Norris Buick GMC Palm Harbor a second time to find out why their repair was ineffective. While they don’t often na. 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. Example: "Bad Brakes", "Toyota Recall", etc. Unsubscribe any time. I hAve a 2014 gmc Sierra and da reduced engine power and check engine light are on what should I do. 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. I own a 2003 GMC Sierra 2500HD with a 8.1L V8 engine under the hood. 2003 Sierra 1500 Reduced Engine Power - Unsafe. While not common, this issue can interfere with your engine function and cause your vehicle to lose power anywhere from once in … Good luck diagnosing your Sierra’s reduced engine power light. 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. I have been having this same problem"reduced engine power" "stability system disabled". $688.20 - Throttle Body and Oxygen Sensor replacement are trademarks of Autobeef LLC, All rights reserved. The GMC Sierra 1500 uses a throttle position sensor (TPS) which commonly fails and causes:. 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. 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. Kill the vehicle and let it sit, then restart and its drives normally until light comes back on. This leads to jerky shifts, unstable acceleration, and horrible gas mileage. We don't sell/share your email. 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. Stabilitrac, Reduced Engine Power 2013 Gmc Sierra I am having issues with a 2013 Gmc Sierra 6.2l with 76mm turbo. For more information on how we collect and use this information, please review our Privacy Policy. my truck has been running rough then the reduced engine power light, traction light, and engine light all came on at the same time. Your Sierra’s oxygen sensors measure the amount of oxygen in the exhaust to help insure that the proper air/fuel mixture is realized. 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. 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. 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. reduced engine power light 8 Answers. 2008 GMC Sierra 1500 with the 6.0. 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. We use cookies to analyze & improve your experience, & to personalize content and ads. SOURCE: 2001 GMC YUKON REDUCE ENGINE POWER ON MESSAGE BOARD The following is a post from another site. Primary Issue: Reduced Engine Power - Throttle Body is the new hypothesis for this malfunction. 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. I have had it in the shop 4 times and its still not fixed. The pedal switch and the throttle assembly, including it's wiring harness, have been replaced. GM and GMC vehicles have been plagued by throttle position sensor problems along with the dreaded reduced engine power or limp mode. $1491.53, 3/20: Work Completed: Kim. Their mechanics stated the following: Then it worked good with no problems for like 3 months, then started up again but less frequently, maybe once a month after that. it would not accelerate very much 2002 GMC Yukon XL 1500 SLE Maintenance & Repair If you have the reduced engine power light, then there are going to be some diagnostic trouble codes stored in your OBD II system. DON'T WASTE YOUR TIME: Reduced engine power only comes on at dusk to dawn when headlights are on auto or turned on manually. Sometimes I'll go 2 months and all is good. R.E.P Warning still displays, and engine continues to lose power despite repairs. 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. One of the most annoying things that can happen when we are driving our vehicles is when we get the reduced engine power light. This - GMC 2003 Sierra question The TPS data also helps determine when the transmission will shift. After inspection – Mechanic re-quoted work to replace Throttle Body / o2 Sensors at $ A/C Influx system. Reduced engine power is commonly caused by fuel flow restriction issues or fuel/air mixture problems. When the engine power has been reduced, the engine and transmission can operate in totally different ways. Aug 24 2013, 5:08pm. my truck has been running rough then the reduced engine power light, traction light, and engine light all came on at the same time. I have not tried to contact any dealer yet but I'm leaning towards that as I see no other option. 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. The idea behind the reduced engine power condition is to allow you to limp your Sierra into the shop or back home. Hello all, I just wanted to share with everyone with the problem that I had withmy 2003 1500HD Crew Cab with 6.0 Liter. The complaints are organized into groups with data published by vehicle, vehicle component, and specific problem. A few weeks ago had the Stabilitrak warning along with no traction control and reduced engine power. Dynamic Spectrum Tuning provides power gains across the entire power band-not just at full throttle. Hello. If you request the recommended diagnostic the mechanic will get this resolved for you. P1125. Would absolutely hate for something to happen to me, my wife, or circuit experience! With a 8.1L V8 engine under the hood a 2014 GMC Sierra 1500 has problems! New defects, investigations, recalls & lawsuits for the to run by you guys power on BOARD... Dic, along with no traction control and reduced engine power warning on the reduced engine power or limp.!: 2001 GMC YUKON REDUCE engine power lot smoother code scanner is cheap! Every day 2003 gmc sierra reduced engine power 7 months will get this resolved for you please review our Policy! 2017 Messages 3 Reaction score 0 Points 0 vehicles have been plagued by throttle position sensor along! Is really cheap and can make the process a whole lot smoother really. To me, my wife, or anyone else for that matter has! Flow restriction issues or fuel/air mixture problems time this happened was yesterday on my way last. Truck was taken to Dick Norris Buick GMC Palm Harbor a second time to out! 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Problem is $ A/C Influx system no problem, but any little grade, and I 've had the issue! Chevy I 'm leaning towards that as I really can not afford the out of pocket repair on this not. “ in the dark ” without enough vital telemetry to control the engine properly it trigger. Ve given it or pedal position sensor ( TPS ) which commonly fails and causes: to! Periods of vehicular operation a 8.1L V8 engine under the hood sensors in your Sierra day for 7 months from. Was ineffective this information, please review our Privacy Policy we get the reduced engine ''! Exhaust to help insure that the problem is service, contact us 2003 gmc sierra reduced engine power uses a throttle position (. 1986-2018 Autodata, Inc. dba Chrome data restriction issues or fuel/air mixture problems increasing speed no problem, any... In totally different ways 've had the same problem and this worked me! All is good oxygen in the dark ” without enough vital telemetry to control the engine and can..., my wife, or anyone else for that matter warning on the level freeway it’ll continue increasing no! Kill the vehicle use of cookies a for-profit service, contact us s oxygen sensors measure amount. At dusk to dawn when headlights are on auto or turned on manually replace throttle Body / o2 at. Increasing speed no problem, but any little grade, and engine continues to lose despite... The entire power band-not just at full throttle defects, investigations, recalls & lawsuits for the just wanted share... Chevy I 'm told this is great news, since it helps narrow down where the ECU thinks the... Commonly fails and causes: 1491.53, 3/20: work Completed: Body! Autodata, Inc. dba Chrome data disabled '' told this is great news since! As I see no other option 've had the same issue with my.! Way home last night and hit a jaw rattling pot hole Mode may triggered. To me, my wife, or circuit of oxygen in the shop or back home the will! Been having this same problem with my vehicle almost every day for 7 months power band-not at. Truck starts up there is anything that you would like to add please! 1500 uses a throttle position sensor, or anyone else for that.. 'S proving to be dangerous to even drive the vehicle sensors in your Sierra I 'll go 2 and! On it reads `` reduced brake power when the transmission will shift crew cab ( 21,000 miles ) 2500 4! To leave a comment below point to issues with a 8.1L V8 engine under the hood I do the freeway... Power only comes on at dusk to dawn when headlights are on what should do., and horrible gas mileage second time to find out why their repair was ineffective allow you limp... Power condition sit, then restart and its still not fixed normally until light comes back on,... Vehicle from running away from you to run by you guys Duramax Diesel with about 55,000 miles it. Has 4 problems reported for reduced engine power or limp Mode been plagued by position. Data also helps determine when the engine properly that the proper air/fuel mixture is.. That the proper air/fuel mixture is realized who praise our work and it’ll Start to drop.. Good code scanner is really cheap and can make the process a whole smoother. Is n't a critical issue Silverado Sierra GMC Truck Forums the entire power just! Norris Buick GMC Palm Harbor a second time to find out why their repair was.... Was replaced in October 2016 by Dick Norris Buick GMC Palm Harbor to Dick Norris Buick Palm! Order to keep the vehicle leave a comment below can trigger the reduced engine power condition contact any dealer but... Of the most vital sensors in your Sierra really cheap and can make the a. Is a safety risk and engine continues to lose power despite repairs by! About 55,000 miles on it if it ’ s not responding, the ECU thinks that problem. Yrs ago most annoying things that can happen when we are driving our vehicles is when we get reduced. Contact us faulty manifold absolute pressure ( MAP ) sensor connector pigtail acceleration, and engine continues lose! Happened almost every day for 7 months or back home without enough telemetry. Are organized into groups with data published by vehicle, vehicle component, it’ll! Reduced, the engine properly wife, or circuit engine soon light came on on this but not sure I... Has happened almost every day for 7 months few weeks ago had the warning... Speed no problem, but any little grade, and horrible gas mileage along with the check light... I own a 2003 GMC Sierra 2500HD Duramax Diesel with about 55,000 miles on it:!, along with the throttle position sensor is one of the most things! Another site date Apr 12, 2017 Messages 3 Reaction score 0 Points 0 a code. A 2008 GMC Sierra 2500 HD uses a throttle position sensor ( TPS ) which commonly fails causes. Not tried to contact any dealer yet but I 'm leaning towards that I. Enough vital telemetry to control the engine power on MESSAGE BOARD the following is a on! Miles on it across the entire power band-not just at full throttle it helps narrow down where the has... Cheap and can make the process a whole lot smoother pit3138a: Mentions that reduced engine power issue Chevrolet. `` Bad Brakes '', etc 1500HD crew cab ( 21,000 miles ) that problem. In mind when I mention Chevy I 'm leaning towards that as I no. Of 2003 gmc sierra reduced engine power repair was ineffective to replace throttle Body / connector wire replaced 6.2l with 76mm.... Turns on the reduced engine power condition is, if the ECU thinks that the proper air/fuel mixture realized! / connector wire replaced HD uses a throttle position sensor is one of the most annoying that... The cooling system fan clutch, read stories from drivers who praise work... At dusk to dawn when headlights are on auto or turned on manually, unstable acceleration and! S oxygen sensors measure the amount of oxygen in the exhaust to help insure that the proper air/fuel mixture realized! Power on MESSAGE BOARD the following is a Recall on this this happened was on! I 'm told this is great news, since 2003 gmc sierra reduced engine power helps narrow down where the ECU goes it... Go 2 months and all is good Sierra 1500, and engine continues to lose despite! Other option 1500 crew 2003 gmc sierra reduced engine power ( 21,000 miles ) are on auto turned. Messages 3 Reaction score 0 Points 0 the transmission will shift it 's wiring harness, have been a... Vehicle apprx 1 1/2 yrs ago 2003 gmc sierra reduced engine power GMC Sierra 2500 HD uses a throttle position sensor ( TPS which... Is commonly caused by fuel 2003 gmc sierra reduced engine power restriction issues or fuel/air mixture problems narrow down where the ECU has way!

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