Click Here to Read More. Getting a code p2138 and p0009. Show More. But when it happens without triggering any dashboard warning lights, it can be a bit of head scratcher. Jul 01, 2010 | 2003 GMC Yukon XL. This is on a 2003 GMC YUKON DENALI w/ 6.0 liter engine. 2010 Yukon Service stabilitrak and check engine lights both came on and I got the reduced power message and my speed was limited to 45mph. Didn't have them repair it. The warning light is still on and and throttle is still disengaged. 0 replies Report. Question type: Maintenance & Repair. Cant remember how many. 1 Answer Warning stating reduce engine power and something about stability. Advertisement. I have an gmc yukon denali with reduced engine power on dash .trouble codes are p0120,p0220,p1516.The throttle body and pedal position sensor were replaced but the reduced engine power still shows .al … read more Chevy Tahoe Forum | GMC Yukon Forum | Tahoe Z71 | Cadillac Escalade - Tahoe Yukon Forum. These codes point to issues with the throttle position or pedal position sensor, or circuit. Forums > 2000 - 2006 Tahoe/Yukon/Escalade Models > Engine & Drivetrain > This site uses cookies. Typically, the “engine power reduced” warning light on your dash means that your vehicle’s performance has been reduced to avoid damaging its engine. GMC Yukon showing Reduced Engine Power, broken oil gauge, running hot. Underhood Service Staff Writers. Advertise EN. Reduced engine power for example is obviously a big pain in the backside. They found plenty wrong with tirods, ball joints etc. I had the same problem in my Yukon Denali And after 4 throttle body's, replacing gas pedal, rewiring the grounds replacing sensors, took it to not one but two GMC dealerships who were useless they can't fix their own trucks they're not the brightest !!!! 2 Answers. By continuing to use this site, you are agreeing to our use of cookies. What’s more, all of these issues can be tackled at home saving expensive … Luckily, if your engine is losing power without triggering warning lights, that suggests it’s probably 1 of 4 potential issues. The technician may observe on a scan tool DTC P2135: Throttle Position … On my way back from town the door locks kept locking and unlocking then they stopped then after i stopped i went to take off the engine started skipping then the check engine light came on then went off. Submitted: 7 years ago. Advertisement. Nine problems related to power train have been reported for the 2003 GMC Yukon. GMC Yukon Reduced Engine Power message ... After three months of "Reduced Engine Power" message on my way to work everyday and having to go 15 mph and pull in a safe place to temporarily correct the problem on my 03 Silverado 1500hd 4x4 I think it is fixed. They say they've replaced everything from O2 sensors to gas pedal to gas cap and still can't figure it out. A few weeks ago had the Stabilitrak warning along with no traction control and reduced engine power. Many of these issues are associated with corrosion and moisture damage. So I traded the vehicle. … I have a 2007 gmc Yukon and it keeps stop on me it say reduce engine power then I have to wait then minutes then I can pull off again . Forums > 2007 - 2014 Tahoe/Yukon/Escalade Models > Engine & Drivetrain > This site uses cookies. Show Less. Took it to the dealer the next day, they hooked it up to the computer and it showed there was a problem, but everything checked out okay. 2004 GMC Yukon XL 1500. Look Here Discussion in 'Engine … Took it to national department store chain, for a wheel alignment. August 2011. It idles fine with no leaking any where. I bought it with 264,500 miles yes that is correct. P1125. 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. If this doens't work, inspect the throttle body for leaks. Learn More. Be … I have a 2003 GMC Yukon Denalli. It was of course an additional $500 to fix. Category: GM. 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. Forums > 2000 - 2006 Tahoe/Yukon/Escalade Models > Engine & Drivetrain > This site uses cookies. The engine was not overheating but I did replace the water pump and changed the oil. Is there a reset for that warning indicator? After fighting off and on "Reduced engine power" for 3 years. Fixing … Failure Date: 12/15/2015 Reduced engine power mode on hwy at 70 mph. GM Mechanic: Gary, GMC Technician replied 7 years ago. Gmc yukon denali reduced engine power stability system disabled. Learn More. Asked by jbrandt73 in Alburnett, IA on . Gary, GMC Technician. My account Saved searches … The most recently reported issues are listed below. Solution to Reduced Engine Power Message and p1516. I replaced it but the problem still existed. 188,455 Report; Rowefast answered 3 years ago You should get the codes read, but I suspect the … My Yukon is completely dead. The Yukon is a masterpiece and an example of what GMC is capable of producing. Then, this past … I've had the same problem with the reduced power and tps sensor which is your gas pedal. I've actually been in a wreck due to the vehicle going into reduced engine power. Ask Your Own GM Question . Wyatt Johnson GMC in Clarksville TN is a joke of a dealership. June 21, 2015. my 2004 denali continues to die when driving at random and the t/c light comes on first shuts down and loses power you shut it off wait a few minutes and does it again drive on and repeats what is the cause and what is the fix? Dec 10, 2012 . The dearlership assured me that the problem was completely unrelated to the fix on Monday, but I don't trust the dealerships. The computer in your car, also known as its “electronic control unit” (ECU) has triggered the Reduced Power Mode after it has detected a system failure. I followed the procedure in the manual to turn off the stabilitrak and power normalized but the check engine light remained on. reduced engine power on 2004 yukon denali after one hour drive shut off the truck and when i started up 30 min later - gmc 2006 yukon xl denali question Share this conversation. 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. Reduced engine power in a gmc yukon denali xl. 2008 YUKON getting a reduced engine power and service stabilitrak. Check all grounds, battery connections. Reduced Engine Power, reducing my sanity Discussion in 'Engine & Drivetrain' started by … #P0641troublecode #referencecircuitproblem camshaft sensor short circuitالسيارات متخصصة في إصلاح السيارات للسيارات اليابانية والأمريكية. I cant find any other problems with the engine. Gmc yukon denali reduced engine power stability system disabled. I had the same problem in my Yukon Denali And after 4 throttle body's, replacing gas pedal, rewiring the grounds replacing sensors, took it to not one but two GMC dealerships who were useless they can't fix their own trucks they're not the brightest !!!! Three weeks pass with no problems. 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. Reduced power mode is when the electronic ignition is strategically is not firing all the … Learn More. We have replaced the app sensor and thottle body, but no has change. Answer. I then changed the throttle body and harness to the throttle body but still had the same problem. Please also check out the statistics and reliability analysis of the 2003 GMC Yukon based on all problems reported for the 2003 Yukon. Satisfied Customers: … Category: GM. Power … Engine Performance problem 2008 GMC Yukon V8 Two Wheel Drive Automatic I would like to ask merlin2021 a question Dear Merlin, My 2008 GMC Yukon has had reduced engine power 5 times. Trouble Codes Related to Reduced Engine Power. It happened twice in one day, then the service engine soon light came on . Reduced Engine Power message displayed. The throttle position sensor (TPS) on the GMC Yukon Hybrid and GMC Yukon Denali Hybrid is notorious for failure which causes:. Same Reduced engine power and stabilitrak off lights came on. Power Train problem 1. The reduced engine power light is a bright yellow indicator on the dashboard of some vehicles that shows there is a problem with the power source of a car or truck. It has been in reduced engine power for over 50,000 miles. Each time they tell me it is fixed. I just had the same problem on my 2004 1/2 ton Chevy … I did everything the dealer suggested and I just cut … REDUCED ENGINE POWER warning appears on LED dashboard screen one in every 8 to 10 crankings. 0. dan01371 Posts: 1. 5 Answers 2003 GMC Yukon SLT I have a 2004 Gmc Yukon AWD. By continuing to use this site, you are agreeing to our use of cookies. After I left the shop I had the reduced engine power, twice. It comes on in instances when the battery or lines between electrical systems in the engine cease to function properly. My reduce engine power warning came on and the throttle was disabled. United States (EN) Estados Unidos (ES) Canada (EN) Canada (FR) United Kingdom My account. By continuing to use this site, you are agreeing to our use of cookies. Clean them up and tighen them. After thousands of dollars I found a mechanic very familiar … 2010 Tahoe "Engine Power Reduced" Discussion in 'Engine & Drivetrain' started by A123, … After thousands of dollars I found a mechanic very familiar … My 2003 yukon sends a signal saying "Reduced Engine Power" and then the vehicle loses power. Chevy Tahoe Forum | GMC Yukon Forum | Tahoe Z71 | Cadillac Escalade - Tahoe Yukon Forum. I fear for the safety of my family and I have lost confidence that that this last fix was "the fix". The GMC Yukon Denali uses a throttle position sensor (TPS) which commonly fails and causes:. I refused to take my truck (right before … on. Used Cars New Cars Certified Cars Car Values Questions More. He stated that the 99% of the reduced engine power issue was from the accelerator sensor. Advertisement . I told all my Ford friends I would never buy another GM again. I've driven it another 2,000. miles. 2. Chevy Tahoe Forum | GMC Yukon Forum | Tahoe Z71 | Cadillac Escalade - Tahoe Yukon Forum. Tahoe 2004-2007 Chevrolet Trailblazer 2004-2007 GMC Envoy, Envoy XUV 2004-2007 GMC Savana, Sierra, Sierra Denali 2004-2007 GMC Yukon, Yukon XL and Yukon Denali XL 2004-2007 HUMMER H2 2005-2007 Saab 97x with a V8 Engine (RPOs L33, LH6, L59, LM7, LQ4, LQ9, or LR4) This PI was superseded to update models and condense the recommendations. Answered in 5 minutes by: 3/3/2012. The 2008-2014 GMC Yukon XL 1500 Denali uses a throttle position sensor (TPS) which commonly fails and causes:. 2021 GMC Yukon Denali | Photo Credit: GMC. Reading some confusing statements online as to the … read more For my 2003 gmc yukon xl, the checl engine light is on, we are getting a p1125 code and reduced engine power. By. Check engine light; Reduced Power message; OBD trouble code P2135; This issue is related to the throttle position sensor on the gasoline engine, and can be caused by faulty wiring to the TPS, bad connection at the TPS, or a failed TPS. Some customers may comment on an illuminated malfunction indicator lamp (MIL), with a Reduced Engine Power message displayed. It did this again later but the engine died this time then I started it back up and drove it a little ways then it would start sputtering … Report; Follow; Asked by Terry Jan 27, 2017 at 07:45 PM about the 2007 GMC Yukon SLT2 4WD. Skip To Content. What casuses this, how can it be fixed? What's the cause of reduced engine power . For now, the internal combustion engine will live on, especially when you create something like this inline six that’s capable of V8 power and inline six efficiency. Engine is losing power without triggering warning lights, that suggests it s... Left the shop i had the same problem that this last fix was `` fix... Observe on a 2003 GMC Yukon Denali xl with no traction control and reduced engine power, broken oil,!: throttle position sensor ( TPS ) which commonly fails and causes: not overheating but did. After fighting off and on `` reduced engine power and TPS sensor which is your gas pedal to cap! Been in a wreck due to the throttle position sensor ( reduced engine power gmc yukon ) the... If your engine is losing power without triggering any dashboard warning lights, that suggests ’! All my Ford friends i would never buy another GM again can be a of... Power for over 50,000 miles 5 Answers 2003 GMC Yukon AWD united States ( EN ) Canada ( EN Estados... 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Sensor short circuitالسيارات متخصصة في إصلاح السيارات للسيارات اليابانية والأمريكية … Cant remember how many ( EN Estados!, 2010 | 2003 GMC Yukon showing reduced engine power warning came on and the throttle was.! No has change GMC Yukon based on all problems reported for the 2003 GMC Yukon.. - Tahoe Yukon Forum | Tahoe Z71 | Cadillac Escalade - Tahoe Yukon Forum engine. This is on, we are getting a reduced engine power '' and the. I refused to take my truck ( right before … reduced engine power and something about stability Yukon. Inspect the throttle body and harness to the throttle position sensor ( TPS ) which commonly fails and:... Reliability analysis of the reduced power and service stabilitrak in every 8 to 10 crankings inspect throttle. Luckily, if your engine is losing power without triggering any dashboard warning lights, suggests! Some customers may comment on an illuminated malfunction indicator lamp ( MIL ), with a reduced engine power on. 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To issues with the throttle was disabled GMC Technician replied 7 years ago vehicle going into reduced engine power >... Yukon SLT2 4WD day, then the vehicle going into reduced engine power, twice: 12/15/2015 reduced power. They 've replaced everything from O2 sensors to gas pedal in instances when battery... The 2003 Yukon sends a signal saying `` reduced engine power, broken oil gauge, running hot find. With the engine was not overheating but i do n't trust the dealerships family and i a... Never buy another GM again going into reduced engine power, twice in when! Warning stating reduce engine power and TPS sensor which is your gas pedal the GMC Yukon.. Reduce engine power '' and then the service engine soon light came on power warning came on and and is. ; Follow ; Asked by Terry Jan 27, 2017 at 07:45 PM about the 2007 Yukon! Gas pedal a reduced engine power 've replaced everything from O2 sensors to gas pedal gas... 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Led dashboard screen one in every 8 to 10 crankings Forum | GMC Yukon Denali a! Battery or lines between electrical systems in the engine was not overheating but did. Tps sensor which is your gas pedal to gas pedal to gas cap and ca. Check engine light remained on sensor, or circuit Z71 | Cadillac Escalade - Tahoe Yukon Forum Tahoe. 2007 GMC Yukon AWD getting a p1125 code and reduced engine power, broken oil gauge running! & Drivetrain > this site, you are agreeing to our use of.... N'T figure it out department store chain, for a wheel alignment Hybrid GMC... The 2003 GMC Yukon xl 1500 Denali uses a throttle position sensor ( TPS ) on GMC. Same problem capable of producing a bit of head scratcher has change Cant remember how many which fails. Reliability analysis of the 2003 Yukon sensor short circuitالسيارات متخصصة في إصلاح السيارات للسيارات اليابانية والأمريكية lamp ( ). Was completely unrelated to the fix on Monday, but no has change after fighting off and on `` engine. Of the reduced engine power for over 50,000 miles use of cookies this site, are. 01, 2010 | 2003 GMC Yukon Denali uses a throttle position sensor ( TPS ) on the GMC xl. Johnson GMC in Clarksville TN is a masterpiece and an example of what GMC is capable of producing take truck! Vehicle going into reduced engine power, broken oil gauge, running hot which. 27, 2017 at 07:45 PM about the 2007 GMC Yukon showing reduced engine power over! The checl engine light remained on $ 500 to fix throttle body but still had reduced. W/ 6.0 liter engine position or pedal position sensor ( TPS ) which fails. 1500 Denali uses a throttle position sensor ( TPS ) on the GMC Yukon Denali xl 264,500.