2008 gmc sierra engine power reduced My truck hasn't reduced power since and that was over a month ago. I bought the truck with a rough idle and drove it home with no issues. 3L, 6L80e, 4X4, HD Towing pkg If you can't fix it with a hammer, it is an electrical problem Sep 18, 2015 · Just had my 2009 GMC Sierra 2500HD Duramax serviced with new fuel filter and Air Filter yesterday. Here’s what you need to do: Disconnect the negative battery terminal and then the positive terminal. Vehicles with DPF have specific fuel and engine oil requirements. I clear the codes and they come back immediately. 3L, 6L80e, 4X4, HD Towing pkg If you can't fix it with a hammer, it is an electrical problem Jan 1, 2013 · SOURCE: 2001 GMC YUKON REDUCE ENGINE POWER ON MESSAGE BOARD The following is a post from another site. 3, 4x4, LTZ with all the options. w/123k I had to replace the mass air sensor and 02 sensor. I did research and found out that it can be either the throttle body, throttle position sensor, throttle position sensor connector, and coolant problem. 08 posi, built 383 stroker, TH400, 13" towing converter, 26mpg highway, 22 city, daily driver/drag Aug 1, 2011 · 2009 Chevrolet Silverado 2500HD LMM, LTZ crewcab regular box. Keeping these components in check is key to maintaining engine efficiency. Didn't work. Apr 19, 2024 · Hi I have a 09 Sierra and I am getting 15 total codes with reduced engine power, stabilitrak light, and my oil pressure drops to zero with an accompanying shut engine off message. I can't get it out of "reduced engine power" no matter if it's hot or cold out now. 6 LMM engine. For me in my 2011 1500 Sierra it was the pedal (which comes with the sensor built in they all do). Mar 20, 2009 · Hey all, stuck at work. 6. The problem lies in the crankcase ventilation system, because the PCV valve freezing shut, causing pressure to build up, and eventually the oil dipstick is forced out of its tube, followed by oil. This morning, when I went to start it, the DIC showed two messages: - Service Stabilitrack - Engine Power Reduced Both the Stabilitrack and Check Engine lights were illuminated. When your GMC Terrain experiences reduced engine power, you’ll notice several signs. ) within the last 12000 miles after turning engine off for a short time (15-20 minutes) it will drive normally for weeks or on some occasions months Feb 4, 2015 · 2008 GMC sierra code # p2135 engine in reduced power mode shows code # p1235 - GMC 2008 Sierra 1500 question Monte Carlo, Silverado, SSR, Suburban, Tahoe Jun 28, 2010 · I have a reduced engine warning and truck now only idles and won't increase rpm's over 1500, no matter if accelerator pushed down or not. 2 gasser Nov 20, 2023 · Change fuel filter, engine reduced power Jump to Latest 4. Now I relatively know whats going on but not really Every day truck, drive around town, drive on couple hour road trips = no issues. All I did then, was clean the throttle body with throttle body cleaner and that was that, never came up again for a few years until now. ) with the 6. The reduced engine power message can come on, if the ECM detects an issue with the throttle body and or the app sensor ( accelerator pedal). 2007. com http://1aau. Feb 16, 2013 · Here is a G. reduced engine power, codes p050d, P0089, P228c Chevy Tahoe Mechanic's Assistant: Im sorry to hear about the issues youre experiencing with your GMC Sierra Denali and Chevy Tahoe, but our Chevy Mechanic will be able to help you diagnose and resolve these problems. Jan 26, 2024 · I have a 2005 GMC Sierra 1500 its in reduced power mode I have replaced the throttle body and the throttle position sensor and the gas pedal and sensor still showing the troble codes P0120, P0068,P1516,and U0107 trying to figure out how to fix May 6, 2015 · 2021 Corvette Stingray Coupe 2LT, GT2 Seats, Z51 Performance Package W Magnetic Selective Ride Control, Front Lift Adjustable Height Memory, Performance Traction Package, Engine Appearance Package, CustomCarGrill front grill inserts inside and out, RGS Grills for the intake vents on both sides, Power Labs manual control for the LED engine bay Oct 9, 2024 · On my 03 1500 5. Bought the truck recently for a pretty good price knowing they had this issue in the past. 0 diesel. It can be a challenge to repair. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! Customer: I have a 2008 GMC Sierra 2500 with the 6. Dec 31, 2012 · o, I was leaving my gfs house around 11:15 after the Washington & Dallas game. 8 LT I have had issues with my truck getting the reduced engine power when I have my AC running for a while and sometimes not at all. backyardmechanic. Jul 15, 2023 · 2011 sierra Reduced engine power issue. 3, I had the reduced power and it was the connector to the throttle body that has about 6 wires of different colors. 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. 5x24" Toyo open countries, Dynoflow exhaust, Air raid CAI, Bullydog PMT. It happens after the engine is running for maybe 10 minutes and the interval seems to get shorter and shorter as time passes. May 10, 2013 · I recently bought a 03 2500hd 4x4 with the 6. Reset to factory, ck engine goes off, then comes right back on. We're parked at a red light and when the light turns green, I hit the throttle, the check engine light came on, DIC said "ENGINE POWER IS REDUCED" and the truck immediately died. 7. Got the light just before the border and went into engine power reduction. Started right up, continued with no incident. You can pull over, turn the truck off, wait a few minutes, restart & it'll reset itself. While in limp mode, the engine power is significantly reduced, and the vehicle operates in a restricted manner ensuring you can get to a mechanic without causing further damage. It started kicking into "reduced power mode" during cold weather. I'm sure they will quickly figure out that the engine needs to be rebuilt /replaced now that it's my dime. Nov 23, 2016 · Know about reduced engine power and check engine light issues in your GMC Sierra 1500. 3l engine set codes P0573 Jan 8, 2013 · My 2010 GMC Sierra did this to me last night. Limped to the dealership. But the shaking is new and startled me for sure Dec 14, 2010 · Driving to work this morning my 09 silverado 1500 stalled out twice. I drove it around the block with no issues and then shut it off. Dec 28, 2008 · *SOLD*2004 GMC Sierra 2500 SLE. 5. All the lights are on but it won't do anything when I try to start it. See What Fuel to Use in The U. 2008 GMC Sierra Duramax - Reduced Engine Power Jul 28, 2015 · 2009 GMC Sierra 2500HD SLE CC/SB 4x4 LMM EFI Live, Edge Insight CTS, Flo~Pro 4" DP back exhaust w/ muffler & stock trumpet tip, Alum. They didn’t say which code it was but the invoice has a gm bul# PIP5764A . Dec 8, 2023 · It’s a safety feature that the Duramax’s computer activates when it finds something wrong that could harm the engine. Recently got a 2019 Sierra AT4, ran great for right at a month then had a “service ESC” and “reduced engine power” warning pop up seemingly out of no where. Less than 300 miles check engine light comes on and dashboard says “ reducing engine power”. Apr 12, 2019 · Check YouTube. 3L. 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. Jun 17, 2017 · 2011 Ext. Aug 6, 2013 · 2008 GMC 2500 SLT Z71 4x4 Extended Cab Short Bed EFI Live by Kory, Transgo Jr 4inch Diamond Eye ss Down Pipe Back, Magnaflow Downpipe Edge Insight CTS2, S&B Cold air intake Aug 4, 2009 · I have a 2008 GMC Duramax with 145k miles on it. Shortly after getting diesel ck engine light came on & reduced power. 3 sierra has shown "reduced engine power", at that point it has very slow acceleration it has 183000 miles on it has been tuned (plugs,filters etc. Had FF changed first thing next morning at Chevy dealer. 3. The mode can be triggered for various reasons, like the engine not receiving enough power, a sensor not working properly , or an issue with the engine itself. Aug 30, 2010 · Bought a 2008 GMC Sierra SLT 3500HD dually (32,700 miles/54,000 km. In the afternoon the check engine light goes away and it acts normal. I turn it off For a few seconds, the engine light is still on but the reduced power goes away and I can drive. Active Fuel Management (AFM) is a technology in many GMC Sierras that helps improve fuel efficiency by deactivating some of the engine cylinders when full power isn’t 2008 GMC sierra 2500 Duramax, I was driving down the highway when my check engine light came on and the words "engine Pete GM training and dealer tech for 14+ years. 6L Duramax in Las Vegas a couple of weeks ago. 3K views 15 replies 6 participants last post by Pooch Dec 17, 2023 Jan 10, 2018 · #PIP4526: Diesel Engine Fuel Line Repairs - keywords DTC hose kink loss P0087 P0093 P1093 pipe power reduced repair restrict restriction SES suction supply vacuum - (Nov 7, 2008) Subject: Diesel Engine Fuel Line Repairs Models: 2001-2007 Chevrolet Silverado Classic 2001-2007 GMC Sierra Classic 2007-2009 Chevrolet Silverado 2007-2009 GMC Sierra Mar 16, 2014 · 2009 GMC Sierra 2500HD SLE CC/SB 4x4 LMM EFI Live, Edge Insight CTS, Flo~Pro 4" DP back exhaust w/ muffler & stock trumpet tip, Alum. More information here. Dec 8, 2008 · 2008 gmc sierra slt 2500hd z71 lmm cc 4x4 sb, efi live with autocal, dp back diamond eye exhaust with muffler navigation with bose and backup camera, spray in bed liner, ss nerf bars, 18" moto metals and nitto terra grapplers Oct 26, 2024 · I have a 2011 Silverado 1500 LTZ V8 4 Wheel Drive 5. also you may also be getting hot fuel also when the reduced engine power message. Service Engine light came back on. Jun 9, 2015 · 4. Jan 21, 2025 · 2008 sierra 5. We have done many of the recommendeed fixes and its only gotten worse and more frequent. Mar 18, 2011 · the only time i got that message with the 06 1 ton i drive, was when it was in limp mode pulling a wedge trailer, climbing mountains, and ended up with 9 codes. The shop put a new connector on splicing the wires and been fine for 10 plus years now. Regular Cab. Here are some specific issues that might cause this condition. Went to dealership. All of a sudden the traction control and engine light came on and the messages flashed as follows. Feb 23, 2011 · My 2003 Z71 has been the best vehicle that I have ever owned, until lately. There were a lot of codes stored but the only one of real relevance was Code P0641 Symptom 00, 5 volt reference circuit 1. No further incidents for 2 weeks/2K mi. Display reads "Reduced engine power" and will not rev up at all! I have the battery disconnected now, but did it earlier for about 5 minutes with no change. Stock 2008 LMM truck, no mods. Both times the initial indication of "Stabiltrak disabled" came on, followed by "Service Stabilitrak" followed by "Service Traction Control" lastly followed by "Reduce Engine Power" and eventually the engine stalled out leaving me with only manual steering and brakes. GM and GMC vehicles have been plagued by throttle position sensor problems along with the dreaded reduced engine power or limp mode. See common causes, average repair costs, and find certified shops nearby. Pulling a trailer or not, occasionally if you get on it going uphill, it'll go into reduced engine power mode. Restarting the truck cleared the issue temporarily, though the check engine light stayed on. Here, we show you the c Oct 14, 2023 · This past week, my truck went into engine power is reduced mode and the truck started shaking pretty rough. It will go but it takes it s time Sep 21, 2023 · The truck runs like a wild banshee, until it doesn't. Diesel particulate filter (DPF) regeneration is inhibited. Sometimes the power is reduced to where the truck takes a little time to gain power or speed. Thanks. 3 L and I have been chasing around this service stabiltrak and service traction control along with engine power reduced with code 2138. Toys: 2011 Sportsman 550 XP EPS & 2008 Sportsman 500 EFI. Mar 6, 2020 · 2008 GMC Sierra 1500 with the 6. These include quick resets, diagnosing the problem manually, and diagnosing the problem using an OBD-II scanner. Dec 24, 2013 · 2021 Corvette Stingray Coupe 2LT, GT2 Seats, Z51 Performance Package W Magnetic Selective Ride Control, Front Lift Adjustable Height Memory, Performance Traction Package, Engine Appearance Package, CustomCarGrill front grill inserts inside and out, RGS Grills for the intake vents on both sides, Power Labs manual control for the LED engine bay Aug 6, 2015 · This 2008 GMC Yukon came in with the complaint of reduced power and the vehicle could not be driven over about 35 mph. I had the same problem and this worked for me. Jan 16, 2025 · Ever since it’s been cold, sometimes when I start my truck, a “reduced engine power” will show up on my dash and my check engine light will come on. About 6 weeks ago coming home from a trip pulling my camper on the interstate at about 70 mph with no prior warning both the check engine light and the reduced engine power message on the DIC came on. 3 Work Truck with a recurring "reduced engine power" issue. What Does Engine Power Reduced Mean? Your Sierra's Powertrain Control Module (PCM) has reduced the available engine power due to a system failure. "Service Traction Control", "Service Stabilitrack", and then "Engine Power Reduced". I was so confused because my mechanic is an Italian guy and thought he was talking about the sensor in the throttle body AND the pedal. 5 GMC "Black" Sierra SLT 3500HD SRW C. Trouble code is P2138, I have replaced the 2008 gmc Sierra 5. When I went to start it, it barely turn over, feeling like I had a near dead battery, but it did start, then service engine soon light came on, and also it says reduced engine power on message center. I had this issue, minus the shaking, a few years ago. 3- on the way to work this morning truck bogged down and popped up, reduced engine power mode, stabilitrack, traction control. The Relationship Between AFM and Stabilitrak Systems. If you drive a diesel, this component can help reduce the engine knock common to those types of vehicles. Same warning lights, loss of power, reduced steering and of course my warranty is now expired. Spent the day running my truck on country roads going through small drifts on service calls (its friggin' cold here this week!) and after I fueled up the truck to hit the road again got the chime going off with check engine light and the message " reduced engine power" called the dealer said they couldnt look at it for a few days, then Sep 26, 2024 · Understanding how different fuels interact with your Sierra’s engine systems can aid in maintaining optimal performance. Service Bulletin, Regarding Reduce Engine Power Message, Subject: SES Light and Reduced Engine Power DTC P0120 P0220 P1516 P2135 Models: 2004-2006 Buick Rainer 2005-2006 Cadillac CTS-V 2003-2006 Cadillac Escalade 2003-2006 Chevrolet Avalanche, Corvette, Express, Monte Carlo, SILVERADO, SSR, Suburban, Tahoe, Trailblazer 2003-2006 Customer: my 2003 gmc 5. turned out the injectors were bad. this all happens whily the truck is pulling a load. 0 Liter. S. got codes P0107, P0106, P0452, P0522, and P0641. Approximately 18,000 miles ago, I had my first experience with the Reduced Engine Power code. C. I had the fuel filter changed out by a local shop I have used for every other vehicle I have owned. THAT was an experience! Limped to exit at top of the hill, turned off for 15 minutes, primed again. Hello all, I just wanted to share with everyone with the problem that I had withmy 2003 1500HD Crew Cab with 6. I started it up this afternoon and drove about a block and it just died. Potentially bad Accelerator Position Sensor (APP). Feb 14, 2014 · We are broke down just south of Bloomington Illinois while on a trip from Georgia to Wyoming and we are on our way home. Also mentioned the oil consumption so will be starting the oil consumption test as well. To keep your Chevy Silverado running smoothly without the dreaded ‘Reduced Engine Power’ warning, regular maintenance is Quick overview of a chivy with a reduced engine power and P1516 code. Preventing Future ‘Reduced Engine Power’ Issues. Jan 22, 2024 · Replaced the harness and replaced the engine oil lines. 2005 Crew/mostly stock Exhaust and fingerstick only new fuel filter just a few hundred miles ago Will idle only Nov 6, 2012 · Looks like its my turn- I have a 2008 GMC Sierra 1500 5. Dec 8, 2023 · Common Issues Leading to Reduced Engine Power. Feb 8, 2015 · A message center or an indicator may display reduced engine power. Dec 21, 2008 · same prob today!! Well go figure! Same problem here. Causes of Limp Mode in Duramax May 6, 2020 · Stabilitrak, traction control, and engine power reduced shown. Amazon Links to my Nov 23, 2016 · The GMC Sierra 2500 HD uses a throttle position sensor (TPS) which commonly fails and causes:. The TSB applies to 2002-2005 Midsize GM SUVs. bleeder screw, WIF sensor delete plug, Fumoto oil drain valve, Pacer LED cab lights, GM dually light bar under tailgate, Footwell lights, Cobra 29 WXNWST CB radio, Wilson 2000 CB antenna, Kenwood speakers, GM chrome oval running boards, Bilstein 5100s, Michelin Customer: 2017 GMC sierra denali 5. Wondering if you could help Wondering if you could help Answered by Mark in 31 mins 11 years ago. This truck has been to 5 diesel shops now with no resolve. org/causes-and-fixes-chevy-p1516-co Oct 28, 2016 · Cleaned battery to engine ground Cleaned firewall ground Nothing has worked. Follow the codes and TSBs. I have a question I want to run by you guys. 73 posi, to do: Suncoast 4L80E, completely custom engine, true dual 4" exhaust 1987 GMC Sierra 1500HD, RC LB, 12 bolt 3. I popped the hood and made sure the throttle position sensor had not came Aug 6, 2020 · The idle immediately changed to what it does on reduced engine power mode and I looked at the cluster and sure enough it was in reduced engine power mode. It was a company truck so has sat around for awhile since the issue. Looking for any inputs/ideas others may have. and Magnaflow from Husker Diesel Husker Diesel- 402-502-6961 Traded:2005 GMC Sierra 2500HD LLY Jan 22, 2021 · Hi, just purchased a 2021 At4 3. 0 engine. The truck drove fine until today. The colder it got the more often it would happen. The TSB applies to 2011-2012 Jul 8, 2012 · 2021 Corvette Stingray Coupe 2LT, GT2 Seats, Z51 Performance Package W Magnetic Selective Ride Control, Front Lift Adjustable Height Memory, Performance Traction Package, Engine Appearance Package, CustomCarGrill front grill inserts inside and out, RGS Grills for the intake vents on both sides, Power Labs manual control for the LED engine bay Dec 8, 2020 · This letter is intended to make you aware that some 2008-2009 Chevrolet TrailBlazer; GMC Envoy; HUMMER H2; 2008-2010 Cadillac Escalade, Escalade ESV, Escalade EXT; Chevrolet Avalanche, Express, Silverado, Suburban, Tahoe; GMC Savana, Sierra, Yukon, Yukon XL; HUMMER H3; 2009-2010 Chevrolet Colorado; GMC Canyon; and HUMMER H3T vehicles, equipped #likesharesubscribe #subscribeIn this video, I show in detail how to fix a common reduced engine power issue that's associated with Chevy or GMC LS engines. Aug 27, 2011 · 2021 Corvette Stingray Coupe 2LT, GT2 Seats, Z51 Performance Package W Magnetic Selective Ride Control, Front Lift Adjustable Height Memory, Performance Traction Package, Engine Appearance Package, CustomCarGrill front grill inserts inside and out, RGS Grills for the intake vents on both sides, Power Labs manual control for the LED engine bay Oct 6, 2014 · hello, i have a 2006 gmc sierra truck, ran perfect for last 30k miles, stopped engine, started again 5 minutes later, now have "loss of power" on dash display, no throttle , and rough engine (not firi … read more May 20, 2013 · I have a 2008 GMC Sierra 2500HD Duramax/Allison Crew Cab, Short Box, 4x4. When your Duramax displays a reduced engine power warning, it’s indicating there’s a significant fault within the system. Feb 24, 2015 · SOURCE: 2008 gmc sierra 1500 crewcab. The ECM commands reduced engine power. They are not diesel experts, but very good mechanics on everything else. *SOLD* 2006 GMC Sierra SLT. https://www. It’s effectively “in the dark” without enough vital telemetry to control the engine properly. Jun 9, 2014 · Almost immediately the truck began throwing the P0101 code and I would get reduced engine power after running above 70MPH on the freeway for about 15 miles. Sep 26, 2011 · #PIP4526: Diesel Engine Fuel Line Repairs - keywords DTC hose kink loss P0087 P0093 P1093 pipe power reduced repair restrict restriction SES suction supply vacuum - (Nov 7, 2008) Subject: Diesel Engine Fuel Line Repairs Models: 2001-2007 Chevrolet Silverado Classic 2001-2007 GMC Sierra Classic 2007-2009 Chevrolet Silverado 2007-2009 GMC Sierra Feb 17, 2020 · We have a 2019 GMC Sierra 3500 HD Denali with the 6. Conditions for Clearing the DTC DTC P0299 is a Type A DTC. Any recommendations? Jul 10, 2019 · 2008 GMC Sierra 2500HD 6. Jul 26, 2012 · 2001 GMC Sierra 2500HD, EC LB, 2WD, Duramax, daily road race/drag truck. 4K views 2 replies 3 participants last post by oldawg99 Jul 18, 2023 Jun 26, 2012 · My 2004 Sierra 2500hd had reduced engine power come on with check engine light then it started up just fine after that - Answered by a verified GMC Mechanic We use cookies to give you the best possible experience on our website. 2008 GMC 3500, only 65000 mi. 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. Sold & Missing It: 2007 Pontiac Grand Prix GXP V-8 powered! May 24, 2020 · I have a 2008 Silverado 1500 4. . Hi,. Jun 28, 2022 · In the chillier temperatures of winter, some owners have noticed an oil leak from the engine in their Chevrolet or GMC pick-ups. Truck has run fine the entire trip. My gut tells me its something in the pedal harness as the engine starts and idles fine, but the accelerator has no effect on the engine. 4X4 LMM Z71 2007 GMC Yukon Denali "BLACK" 6. I got the truck home. Jul 7, 2011 · A check of the internets - P1125 with Reduced Engine Power indicator on GMC Sierra GMT800 and GMT900 platform. The Throttle Actuator Control (TAC) / throttle body type trouble codes may be caused by a loose wiring crimp at the throttle body connector, or a broken throttle body circuit. These methods are DIY, and you can perform them efficiently by yourself. I replaced the throttle body with a new oem replacement and the truck started up and ran perfectly. I dropped to 18% fuel filter life remaining and began to get the "Reduced Engine Power" prompt and dropping from 70mph to about 50mph on the interstate. Beautiful truck but will never buy another GMC. Jan 12, 2015 · SOLD - 2013 GMC Sierra 1500 SLT SOLD - 2008 Chevy Silverado 1500 LT. How Much Does it Cost to Fix a Chevy Silverado with Reduced Engine Power? Sep 27, 2014 · A forum community dedicated to Chevrolet Silverado and GMC Sierra pickup owners and enthusiasts. Sep 12, 2024 · The reduced engine power light comes on when your vehicle’s computer system senses an error or problem that could lead to significant engine damage. Dec 21, 2013 · 2021 C8 Corvette 2LT, “Ceramic Matrix Gray Metallic“ Front Lift with memory, Z51 package with Magna ride suspension, Engine Appearance Package. This truck has a brand new engine with many sensors/parts replaced 2 months ago: Nox sensors All o2 sensors MAP MAF Spark plugs/coil packs Starter Alternator Brake booster Throttle body Truck ran great for 2 months after it underwent everything above. The system attempts to protect the engine by going into a low power mode. I put it in park and tried to turn it back on. M. Jun 27, 2022 · Engine Power Reduced is GM’s way of keeping your GMC Sierra safe when vital systems are no longer performing reliably. PIT3138A: Mentions that Reduced Engine Power Mode may be triggered due to an electrical short inside the cooling system fan clutch. we will turn the truck off and sit for 1o min and then restart and drive fine for 20 to 40 miles and shut down again. The after a little bit, the code goes away and it seems to run fine. Reduced engine power light. Scanned and received P2138. The truck immediately lost power and dropped to about 30 mph. 23 volts Jun 14, 2021 · 2013 Silverado 1500 LT, Z71, 5. EFI, Transgo Jr. Sep 7, 2013 · See Malfunction Indicator Lamp and Engine Power Messages. Dec 31, 2016 · 2021 C8 Corvette 2LT, “Ceramic Matrix Gray Metallic“ Front Lift with memory, Z51 package with Magna ride suspension, Engine Appearance Package. Oct 31, 2012 · If you're familiar with the area, you can verify the traffic situation there. 0. It's happening more frequently. bleeder screw, WIF sensor delete plug, Fumoto oil drain valve, Pacer LED cab lights, GM dually light bar under tailgate, Footwell lights, Cobra 29 WXNWST CB radio, Wilson 2000 CB antenna, Kenwood speakers, GM chrome oval running boards, Bilstein 5100s, Michelin Sep 3, 2013 · Update. maybe someone can help 🤞🏼🤞🏼 Jump to Latest 1. 6L Duramax TD L5P The truck currently has 6,124 miles on it. Symptoms of Reduced Engine Power. 14 years experience. They check it , said they found nothing faulty. This safe mode, often called limp mode, is designed to protect your engine from damage. I seem to have power. Mechanic thought it was a faulty code reading. 20+ MPG tire smoking monster! *SOLD* 2008 GMC Sierra 3500 SLT - Crew Cab Long Bed SRW. Cab Z71 Silverado SOLD - 2016 CCSB Z71 Colorado SOLD - 2013 GMC Sierra 1500 SLT SOLD - 2008 Chevy Silverado 1500 LT 2017 gmc sierra 5. Jun 28, 2010 · 2021 Corvette Stingray Coupe 2LT, GT2 Seats, Z51 Performance Package W Magnetic Selective Ride Control, Front Lift Adjustable Height Memory, Performance Traction Package, Engine Appearance Package, CustomCarGrill front grill inserts inside and out, RGS Grills for the intake vents on both sides, Power Labs manual control for the LED engine bay Mar 24, 2022 · Hi there!! Just wanted to provide an update on my insane experience the last few months with my 2006 Chevy 1500 z71/4x4 5. the solinoids on the injectors are sticking allowing the fuel to bypass to the tank causing low fuel rail pressure. One of the wires was broken. No engine codes have ever been thrown. The reduced engine light is coming on. Sensor Failures and Dec 27, 2011 · Re: "Reduce Engine Power" warning light. There are 3 different methods to reset GMC’s reduced engine power mode. 2007 Silverado 4. Dec 2, 2023 · Duramax Reduced Engine Power Reset. The next morning it worked normal for the 10 minutes I drove it. 150k Customer: hello I just purchased a 2008 GMC sierra in March and it started throwing the reduced engine power crap. to/c/229/C/throttle-body-assemblyIf you have noticed that your engine is weak, your vehicle won't accelerat May 24, 2020 · I have a 2008 Silverado 1500 4. 2017 gmc Sierra 2500HD Duramax runs fine for a week and then starts going into limp/reduced power mode usually for GM Tech (Cam) GM Grand Master Technician 2007. Stock for now Hers: 2008 Tahoe, 5. 2008-2009 GMC Envoy 2008-2011 GMC Canyon, Savana, Sierra, Sierra Denali, Yukon, Yukon Denali, Yukon XL, Yukon XL Denali 2008-2011 GMC Yukon Two-Mode Hybrid 2009-2011 GMC Sierra Two-Mode Hybrid 2008-2009 HUMMER H2 2008-2010 HUMMER H3 Equipped with Engine RPO LFA, LY2, L20, LMG, LC9, LH6, LMF, LH8, LH9, L76, LS2, LY5, LY6, L92, L96, LZ1, L94 or L9H Sep 29, 2010 · 2nd dmax 2009 GMC 2500hd SLE2 CC SB Z71 4wd lmm/alli 6spd, Onyx over titanium, spray in armaguard bedliner, deezee rail caps, ici gatorback flaps, gm oval step bars, gm brake controller, gm remote start and tow mirrors, 17in gm wheels, delta bed level toolbox , chrome door handles, gm 6 disc bose-xm w rear ent, Garmin nuvi 3590lmt, dic button upgrade, gm Power moonroof/rear slider, rear wheel Nov 23, 2013 · 2008 GMC 2500 HD D-Max LTZ, 4x4 MBRP 5" turbo back exhaust & 3" down pipe, EGR Block Plate, Air Dog II 165, AFE Intake, H&S Fuel Rail Plug, Edge Insight CT, locking DSP 5 switch, & EFI Live by Lee Allgood @ LJC Performance! Jan 24, 2018 · After spraying a small amount of starting fluid into the air intake tube, the engine starts for just a moment, then dies[/*] The fuses for the fuel injectors are good[/*] 112,000 miles[/*] History: Three or four years ago the truck had the Reduced Engine Power warning problem. 6 Diesel - 225k - Bone Stock. Jan 5, 2014 · 2013 Silverado 1500 LT, Z71, 5. Extended idling in P (Park) can cause exhaust parts and gases to become very hot. The truck is completely stock (except Cognito uca's, Bilstein 5100's, and Centerline 20's). 2 gasser Nov 24, 2014 · Hello, I have a 2008 Gmc Sierra 2500HD Duramax Diesel with about 55,000 miles on it. Started it back up and started up rough and barely running and I got the engine reduced power on the dash. Black / Gray, LLY Duramax, EFI LIVE, Kennedy 4 into 5" exhaust, 6k HID's. PI0759: Mentions that Reduced Engine Power Mode may be triggered due to a faulty manifold absolute pressure (MAP) sensor connector pigtail. A simple reset can sometimes resolve nagging power issues, giving your Silverado a fresh start. Symptoms of failure include the ones we’ve discussed, as well as an increased knock. The first thing you can do to fix the Reduced Engine Power warning message in Duramax vehicles, such as Chevy Silverado and GMC Sierra, is reset the ECU. or What Fuel to Use in Canada and Mexico and Engine Oil for more information on those requirements. A vehicle may be brought into the dealer for a reduced power message, and DTCs P0120, P0220, P1516, P2101, or P2135. I have noticed the engine is low on power, If I am running down the road and have to accellerate the truck does not seem to want to go. Engine power reduced message is on the display. Today each time i start up vehicle it prompts "Engine Power is Reduced" It feel like it has a governer on it and will just crawl up to about 40 mph. I was on my way home last night and hit a jaw rattling pot hole. because the TSB says 2008-2010 need reprogramming by the dealer after the repair, but 2011 do not Dec 21, 2008 · Mine: 2008 2500HD CC, LMM, 4x4, Z71, LTZ, with all the options minus Navigation. I could only go about 35-40 mph. so while I was at it I replaced the air filter fuel filter. I researched and found that the K&N oil could harm the MAF sensor, so I cleaned them both properly and lightly oiled the K&N. Well I went through it today and I found two connections that were kind of loose so I took the crimp connectors off and recrimped the wires together. the truck drives fine under normal driving. Aug 27, 2019 · 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. 1996 Chevy Silverado 2500HD, RC LB, 4x4, 14 bolt FF 3. P1516 P2101 In this video would be going over what the reduced engine power light means and what you should do to fix it, a few Shop for New Auto Parts at 1AAuto. It started under no load driving on the freeway about 55. Now it won't do anything. Drove it back to BC Canada and had no trouble at all until I fueled up in Bellingham WA, which is possibly just a coincidence. Diagnostic Aids If the condition is intermittent. GM SILVERADO (2008) REDUCED ENGINE POWER FIX#P0641 SENSOR REFERENCE VOLTAGE "A" CPOSSIBLE CAUSES:FAULTY ENGINE CONTROL MODULE (ECM)ECM HARNESS IS OPEN OR SHO Duramax Reduced Engine Power Reset is a process that can be used to reset the engine’s computing system if it appears in a reduced engine power mode. Feb 2, 2021 · service stabilitrack,traction control,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. Save Share mine also threw a code p0212 and got the "engine power reduced" warning, and all Nov 23, 2016 · The GMC Sierra 3500 HD uses a throttle position sensor (TPS) which commonly fails and causes:. Once it came to a stop, I put it in Parkturned the key off & tried to turn it back on Jul 31, 2024 · Malfunctioning O2 sensors or faults in the ECU can trigger a reduced engine power mode, affecting your vehicle’s performance. I was literally 4 mins away from my house & as soon I passed the railroad tracks, my engine just bogged down & it said "Engine Power is Reduced" Lost my Power Steering & tried to pull off to the next area that I could. It's been in limp mode ever since. I scanned. Nov 6, 2004 · Indicator Lamp (MIL) Illuminated, Reduced Engine Power Message Displayed, DTC P2135 Set - (Apr 16, 2012) 2009-2011 GMC Sierra Two-Mode Hybrid 2008-2009 HUMMER H2 customer: 2008 gmc 2500 diesel 4x4 light will come on and say engine power reduced and truck will lose all power. It has 73,000 miles and has been serviced meticulously. 8" Fabtec Lift, 24" wheels, 37x13. Clean exhaust filter has come on as well. Never died but was rather difficult not being ran over while limping into work. Sep 23, 2024 · Remember, if problems persist, professional diagnostics might be needed. 3 V8- REDUCE ENGINE POWER…. Jul 31, 2023 · It works by recirculating exhaust gases to the intake system. Reply reply Normal_Bid_2974 Mar 29, 2016 · Climbing long hill on interstate in Smokey Mtns next afternoon, truck suddenly reduced power. After a 10-15 second shut down and restart it would run fine for a while. throttle body was the first big item that was addressed when my problems began and it took months of throwing money and parts at all the codes etc oh and 2 throttle body’s /exchanged under warranty and with the 3rd and final TB immediately my Here is how to fix the issue of Reduced Engine Power on your Chevy Silverado or Tahoe, GMC Sierra or Yukon, and even Cadillac Escalade. nyzqx aryr zoexs wwixy oepdve fxj jsyi qzciqf hbigs grupc vity sitsvp jutgroyu bdrf vczpt