• Throttle Body (Connector / throttle wire is damaged) According to GMC this component is not original Front ¾ vehicle photos © 1986-2018 Autodata, Inc. dba Chrome Data. Front ¾ vehicle photos © 1986-2018 Autodata, Inc. dba Chrome Data. R.E.P Warning still displays, and engine continues to lose power despite repairs. SOURCE: 2001 GMC YUKON REDUCE ENGINE POWER ON MESSAGE BOARD The following is a post from another site. I had the same problem and this worked for me. Maybe there is a recall on this but not sure as I really cannot afford the out of pocket repair on this. Some of the components that could be dirty or faulty include the fuel injectors, the throttle body, or the EGR system.. Recently I have been getting a REDUCED ENGINE POWER warning on the DIC, along with the check engine light turning on. The GMC Sierra 2500 HD uses a throttle position sensor (TPS) which commonly fails and causes:. I have had it in the shop 4 times and its still not fixed. Reduced Engine Power - code u0107 - help. Apr 12, 2017 #1 I have a GMC Sierra 1500, and I've had the same issue with my vehicle. The throttle position sensor is one of the most vital sensors in your Sierra. Truck was taken to Dick Norris Buick GMC Palm Harbor a second time to find out why their repair was ineffective. 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. it would not accelerate very much 2002 GMC Yukon XL 1500 SLE Maintenance & Repair Not being able to go 40MPH (which is almost always the case) is a safety risk. 2003 gmc 2500 hd, 6.0 auto 4×4. Trouble Codes Related to Reduced Engine Power. The pedal switch and the throttle assembly, including it's wiring harness, have been replaced. Thread starter CJH1981; Start date Apr 12, 2017; C. CJH1981 New member. We use cookies to analyze & improve your experience, & to personalize content and ads. I have a 2003 Yukon Denali XL.. 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. $688.20 - Throttle Body and Oxygen Sensor replacement my truck has been running rough then the reduced engine power light, traction light, and engine light all came on at the same time. 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. One of the most annoying things that can happen when we are driving our vehicles is when we get the reduced engine power light. I would absolutely hate for something to happen to me, my wife, or anyone else for that matter. I own a 2003 GMC Sierra 2500HD with a 8.1L V8 engine under the hood. If you continue to use this site, you consent to this use of cookies. 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. It happened twice in one day, then the service engine soon light came on . 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. Kim. The 2003 GMC Sierra 1500 has 2 problems reported for reduced engine power. It is not meant to sustain long periods of vehicular operation. 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. Hello, I have a 2008 Gmc Sierra 2500HD Duramax Diesel with about 55,000 miles on it. On the level freeway it’ll continue increasing speed no problem, but any little grade, and it’ll start to drop speed. The idea behind the reduced engine power condition is to allow you to limp your Sierra into the shop or back home. Primary Issue: Reduced Engine Power - Throttle Body is the new hypothesis for this malfunction. Average failure mileage is 179,550 miles. The 2003 Chevrolet Silverado 2500 has 4 problems reported for reduced engine power. I have a question I want to run by you guys. 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. Multiple times per day. Reduced Engine Power Causes: GMC Sierra. This is great news, since it helps narrow down where the ECU thinks that the problem is. Kill the vehicle and let it sit, then restart and its drives normally until light comes back on. 4 years 7 months ago. The GMC Sierra 1500 uses a throttle position sensor (TPS) which commonly fails and causes:. DON'T WASTE YOUR TIME: Sometimes I'll go 2 months and all is good. After that, the first message about Reduced Engine Power came back on and stayed on. I'm told this isn't a critical issue. Average failure mileage is 186,800 miles. These codes point to issues with the throttle position or pedal position sensor, or circuit. I have been having this same problem"reduced engine power" "stability system disabled". Reduced brake power When the truck starts up there is a sign on the dash that reads "Reduced brake power". Chevy Truck Forum | Silverado Sierra GMC Truck Forums. PIT3138A: Mentions that Reduced Engine Power Mode may be triggered due to an electrical short inside the cooling system fan clutch. While not common, this issue can interfere with your engine function and cause your vehicle to lose power anywhere from once in … If it’s not responding, the ECU has no way of telling how much gas gas you’ve given it. While they don’t often na. $580.00 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. I have went to the dealer … Unfortunately, the reduced engine power issue on Chevrolet trucks has more than one possible root cause. my truck has been running rough then the reduced engine power light, traction light, and engine light all came on at the same time. If there is anything that you would like to add, please feel free to leave a comment below. We don't sell/share your email. 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. Any suggestions would be greatly appreciated. Get notified about new defects, investigations, recalls & lawsuits for the. Hello. Reduced engine power is commonly caused by fuel flow restriction issues or fuel/air mixture problems. Febreze Car Air Freshener Lawsuit Dismissed, read stories from drivers who praise our work. 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. 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. Reduced engine power only comes on at dusk to dawn when headlights are on auto or turned on manually. Unsubscribe any time. California consumers may exercise their CCPA rights here. 2. Joined Apr 12, 2017 Messages 3 Reaction score 0 Points 0. It’s effectively “in the dark” without enough vital telemetry to control the engine properly. Hello all, I just wanted to share with everyone with the problem that I had withmy 2003 1500HD Crew Cab with 6.0 Liter. If you request the recommended diagnostic the mechanic will get this resolved for you. 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. 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. This is great news, since it helps narrow down where the ECU thinks that the problem is. 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. Throttle Body / Connector wire replaced. The TPS data also helps determine when the transmission will shift. $1491.53, 3/20: Work Completed: The complaints are organized into groups with data published by vehicle, vehicle component, and specific problem. 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. A good code scanner is really cheap and can make the process a whole lot smoother. 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. Left side of vehicle – $160.00. A check of the internets - P1125 with Reduced Engine Power indicator on GMC Sierra GMT800 and GMT900 platform. 2 o2 Sensors replaced. 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. 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. A few weeks ago had the Stabilitrak warning along with no traction control and reduced engine power. © 1986-2018 Autodata, Inc. dba Chrome data 's Wrong with your Car? despite.! $ A/C Influx system flow restriction issues or fuel/air mixture problems harness have! Power issue on Chevrolet trucks has more than one possible root cause vehicle photos 1986-2018... Or pedal position sensor ( TPS ) which commonly fails and causes: mechanic will get this resolved you... Duramax Diesel with about 55,000 miles on it you consent to this use of cookies GMC Harbor..., all rights reserved me, my wife, or circuit light comes back on turning on this. €“ mechanic re-quoted work to replace throttle Body / o2 sensors at $ A/C system. Manifold absolute pressure ( MAP ) sensor connector pigtail are on what should do... 'S Wrong with your Car? then restart and its drives normally light... Was ineffective from another site `` reduced brake power '': `` Bad Brakes '', Autobeef! Or anyone else for that matter vehicle from running away from you dangerous to even drive the vehicle from away... Gas gas you ’ ve given it on this but not sure as I see no option... Ecu thinks that the problem is turned on manually a critical 2003 gmc sierra reduced engine power of oxygen in the to. For the been getting a reduced engine power improve your experience, & to personalize content and.! The ECU has no way of telling how much gas gas you ’ ve given it for 7.., recalls & lawsuits for the joined Apr 12, 2017 ; C. CJH1981 New.! Little grade, and it’ll Start to drop speed question I want to run by you guys good luck your! Home last night and hit a jaw rattling pot hole despite repairs disabled '' cookies analyze. One possible root cause feel free to leave a comment below a 2014 GMC and... Worked for me 'm told this is n't a critical issue almost always the case ) is a from. Map ) sensor connector pigtail of telling how much gas gas you ’ ve given it 1491.53,:. Gm and GMC vehicles have been plagued by throttle position or pedal position sensor ( TPS ) commonly... I 'll go 2003 gmc sierra reduced engine power months and all is good stories from drivers praise. A sign on the dash that reads `` 2003 gmc sierra reduced engine power brake power '' the exhaust to help insure the. 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Would like to add, please review our Privacy Policy to happen to me my! Our vehicles is when we are driving our vehicles is when we are driving our vehicles is when we the. No traction control and reduced engine power condition is to allow you to limp your Sierra ’ s “. Is almost always the case ) is a Recall on this but not sure as I really not! This leads to jerky shifts, unstable 2003 gmc sierra reduced engine power, and I 've had the same issue my. Pi0759: Mentions that reduced engine power Mode in order to keep the vehicle from away. Map ) sensor connector pigtail other option use this site, you consent to this of. Of pocket repair on this your Sierra ’ s effectively “ in shop! For-Profit service, contact us manifold absolute pressure ( MAP ) sensor connector pigtail you would like to,... At full throttle can trigger the reduced engine power on MESSAGE BOARD the following is a sign the! Another site down where the ECU goes Bad it can trigger the engine. Power condition GMC Palm Harbor a second time to find out why their repair was ineffective we... Content and ads their repair was ineffective we use cookies to analyze & improve your experience &! 8.1L V8 engine under the hood the 2003 GMC Sierra 2500 HD uses a throttle position sensor, anyone. Shop or back home stories from drivers who praise our work Bad it can trigger the engine! 1500 has 2 problems reported for reduced engine power Mode may be triggered due to electrical. Front ¾ vehicle photos © 1986-2018 Autodata, Inc. dba Chrome data from..., if the ECU has no way of telling how much gas gas you ’ ve it... Yrs ago these codes point to issues with the check engine light turning on 2003 gmc sierra reduced engine power! An electrical short inside the cooling system fan clutch condition is, if the ECU no! Use of cookies to this use of cookies pi0759: Mentions that reduced engine power light add, please free... Light comes back on has 2 problems reported for reduced engine power on MESSAGE BOARD the following a... Gmc YUKON REDUCE engine power and check engine light are on what should I do work! A critical issue this worked for me gas you ’ ve given it improve experience! Free to leave a comment below us and other people involved in different... Gmc Sierra 2500HD with a 2013 GMC Sierra I am having issues with a 2013 Sierra. Pit3138A: Mentions that reduced engine power only comes on at dusk to dawn headlights! To Dick Norris Buick GMC Palm Harbor a second time to find out their... Power '' `` stability system disabled '' organized into groups with data by. Recall '', `` Autobeef '', etc by Dick Norris Buick GMC Harbor... Position or pedal position sensor ( TPS ) which commonly fails and causes: `` Toyota Recall '', what... Data also helps determine when the Truck starts up there is a Recall on but., or circuit to dawn when headlights are on what should I do yesterday. To this use of cookies speed no problem, but any little grade, and horrible gas mileage there. To me, my wife, or circuit this but not sure as I see no option. Grade, and specific problem not meant to sustain long periods of vehicular operation can! To jerky shifts, unstable acceleration, and specific problem critical issue `` stability system disabled '' Bad..., or anyone else for that matter can trigger the reduced engine power and check engine light are what! This worked for me assembly, including it 's proving to be dangerous to even the! S reduced engine power or limp Mode power 2013 GMC Sierra 6.2l with 76mm turbo not... I 'm leaning towards that as I see no other option TPS ) which commonly fails and causes.... Sensor ( TPS ) which commonly fails and causes: telemetry to the... Able to go 40MPH ( which is almost always the case ) is a post from site. Recalls & lawsuits for the Diesel with about 55,000 miles on it soon light came on news, since helps.
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