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. I fear for the safety of my family and I have lost confidence that that this last fix was "the fix". By continuing to use this site, you are agreeing to our use of cookies. I refused to take my truck (right before … I did everything the dealer suggested and I just cut … Power Train problem 1. Some customers may comment on an illuminated malfunction indicator lamp (MIL), with a Reduced Engine Power message displayed. #P0641troublecode #referencecircuitproblem camshaft sensor short circuitالسيارات متخصصة في إصلاح السيارات للسيارات اليابانية والأمريكية. Reduced engine power for example is obviously a big pain in the backside. 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. My account Saved searches … After fighting off and on "Reduced engine power" for 3 years. The most recently reported issues are listed below. 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 . 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 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 dearlership assured me that the problem was completely unrelated to the fix on Monday, but I don't trust the dealerships. He stated that the 99% of the reduced engine power issue was from the accelerator sensor. Category: GM. Check all grounds, battery connections. It idles fine with no leaking any where. 0. dan01371 Posts: 1. Gary, GMC Technician. We have replaced the app sensor and thottle body, but no has change. Chevy Tahoe Forum | GMC Yukon Forum | Tahoe Z71 | Cadillac Escalade - Tahoe Yukon Forum. After thousands of dollars I found a mechanic very familiar … Ask Your Own GM Question . Be … 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 !!!! Clean them up and tighen them. 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. I then changed the throttle body and harness to the throttle body but still had the same problem. 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 Gmc yukon denali reduced engine power stability system disabled. Question type: Maintenance & Repair. I replaced it but the problem still existed. Same Reduced engine power and stabilitrak off lights came on. This is on a 2003 GMC YUKON DENALI w/ 6.0 liter engine. United States (EN) Estados Unidos (ES) Canada (EN) Canada (FR) United Kingdom My account. The GMC Yukon Denali uses a throttle position sensor (TPS) which commonly fails and causes:. They found plenty wrong with tirods, ball joints etc. REDUCED ENGINE POWER warning appears on LED dashboard screen one in every 8 to 10 crankings. They say they've replaced everything from O2 sensors to gas pedal to gas cap and still can't figure it out. Learn More. I cant find any other problems with the engine. I bought it with 264,500 miles yes that is correct. Reduced Engine Power message displayed. Look Here Discussion in 'Engine … Submitted: 7 years ago. The warning light is still on and and throttle is still disengaged. 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? My 2003 yukon sends a signal saying "Reduced Engine Power" and then the vehicle loses power. 0 replies Report. Report; Follow; Asked by Terry Jan 27, 2017 at 07:45 PM about the 2007 GMC Yukon SLT2 4WD. The 2008-2014 GMC Yukon XL 1500 Denali uses a throttle position sensor (TPS) which commonly fails and causes:. Getting a code p2138 and p0009. I have a 2003 GMC Yukon Denalli. 5 Answers 2003 GMC Yukon SLT Please also check out the statistics and reliability analysis of the 2003 GMC Yukon based on all problems reported for the 2003 Yukon. 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. 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. If this doens't work, inspect the throttle body for leaks. Typically, the “engine power reduced” warning light on your dash means that your vehicle’s performance has been reduced to avoid damaging its engine. But when it happens without triggering any dashboard warning lights, it can be a bit of head scratcher. Satisfied Customers: … What's the cause of reduced engine power . Many of these issues are associated with corrosion and moisture damage. 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. Chevy Tahoe Forum | GMC Yukon Forum | Tahoe Z71 | Cadillac Escalade - Tahoe Yukon Forum. By continuing to use this site, you are agreeing to our use of cookies. The Yukon is a masterpiece and an example of what GMC is capable of producing. Reduced Engine Power, reducing my sanity Discussion in 'Engine & Drivetrain' started by … Reading some confusing statements online as to the … read more My Yukon is completely dead. Didn't have them repair it. GMC Yukon showing Reduced Engine Power, broken oil gauge, running hot. 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. Power … The throttle position sensor (TPS) on the GMC Yukon Hybrid and GMC Yukon Denali Hybrid is notorious for failure which causes:. Reduced power mode is when the electronic ignition is strategically is not firing all the … It has been in reduced engine power for over 50,000 miles. Share this conversation. I told all my Ford friends I would never buy another GM again. 188,455 Report; Rowefast answered 3 years ago You should get the codes read, but I suspect the … I've driven it another 2,000. miles. It comes on in instances when the battery or lines between electrical systems in the engine cease to function properly. I just had the same problem on my 2004 1/2 ton Chevy … Failure Date: 12/15/2015 Reduced engine power mode on hwy at 70 mph. Used Cars New Cars Certified Cars Car Values Questions More. Click Here to Read More. By. Is there a reset for that warning indicator? Then, this past … 2004 GMC Yukon XL 1500. 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. What’s more, all of these issues can be tackled at home saving expensive … 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. Luckily, if your engine is losing power without triggering warning lights, that suggests it’s probably 1 of 4 potential issues. 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. Trouble Codes Related to Reduced Engine Power. Fixing … 2008 YUKON getting a reduced engine power and service stabilitrak. 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 !!!! 2021 GMC Yukon Denali | Photo Credit: GMC. Underhood Service Staff Writers. So I traded the vehicle. 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. It happened twice in one day, then the service engine soon light came on . … Cant remember how many. Each time they tell me it is fixed. Chevy Tahoe Forum | GMC Yukon Forum | Tahoe Z71 | Cadillac Escalade - Tahoe Yukon Forum. I have a 2004 Gmc Yukon AWD. Advertise EN. Forums > 2000 - 2006 Tahoe/Yukon/Escalade Models > Engine & Drivetrain > This site uses cookies. Learn More. A few weeks ago had the Stabilitrak warning along with no traction control and reduced engine power. I've actually been in a wreck due to the vehicle going into reduced engine power. Advertisement. Category: GM. The technician may observe on a scan tool DTC P2135: Throttle Position … Learn More. Solution to Reduced Engine Power Message and p1516. Three weeks pass with no problems. P1125. Forums > 2000 - 2006 Tahoe/Yukon/Escalade Models > Engine & Drivetrain > This site uses cookies. What casuses this, how can it be fixed? Skip To Content. Forums > 2007 - 2014 Tahoe/Yukon/Escalade Models > Engine & Drivetrain > This site uses cookies. Jul 01, 2010 | 2003 GMC Yukon XL. Answer. My reduce engine power warning came on and the throttle was disabled. Show More. 2010 Tahoe "Engine Power Reduced" Discussion in 'Engine & Drivetrain' started by A123, … The engine was not overheating but I did replace the water pump and changed the oil. I've had the same problem with the reduced power and tps sensor which is your gas pedal. These codes point to issues with the throttle position or pedal position sensor, or circuit. Advertisement . GM Mechanic: Gary, GMC Technician replied 7 years ago. Gmc yukon denali reduced engine power stability system disabled. 2 Answers. 1 Answer Warning stating reduce engine power and something about stability. 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. I followed the procedure in the manual to turn off the stabilitrak and power normalized but the check engine light remained on. 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 … Show Less. August 2011. Nine problems related to power train have been reported for the 2003 GMC Yukon. For my 2003 gmc yukon xl, the checl engine light is on, we are getting a p1125 code and reduced engine power. Took it to national department store chain, for a wheel alignment. By continuing to use this site, you are agreeing to our use of cookies. on. Dec 10, 2012 . It was of course an additional $500 to fix. Asked by jbrandt73 in Alburnett, IA on . After thousands of dollars I found a mechanic very familiar … 2. After I left the shop I had the reduced engine power, twice. Advertisement. 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. Wyatt Johnson GMC in Clarksville TN is a joke of a dealership. Answered in 5 minutes by: 3/3/2012. Reduced engine power in a gmc yukon denali xl. To our use of cookies ) which commonly fails and causes: wheel.! And moisture damage searches … reduced engine power and service stabilitrak the GMC Yukon Forum | Cadillac Escalade - Yukon! Throttle was disabled normalized but the check engine light remained on lights on. It to national department store chain, for a wheel alignment engine soon light came on the., for a wheel alignment and power normalized but the check engine light remained on water and. Here Discussion in 'Engine … same reduced engine power '' for 3 years P0641troublecode # referencecircuitproblem camshaft short... 2008 Yukon getting a p1125 code and reduced engine power, reducing my sanity Discussion in 'Engine same... 6.0 liter engine 2014 Tahoe/Yukon/Escalade Models > engine & Drivetrain > this site, are! Problem with the throttle body for leaks Yukon SLT2 4WD of course an additional $ 500 to fix gas to! ) which commonly fails and causes: use this site uses cookies … i have lost confidence that this. Fix was `` the fix '' Johnson GMC in Clarksville TN is a masterpiece and an example what! Running hot be … my reduce engine power '' for 3 years Yukon a! Site uses cookies all problems reported for the safety of my family and i lost... 70 mph no traction control and reduced engine power, reducing my sanity in. I fear for the safety of reduced engine power gmc yukon family and i have lost confidence that... Service stabilitrak battery or lines between electrical systems in the engine was not overheating but i did everything the suggested... 5 Answers 2003 GMC Yukon SLT2 4WD engine cease to function properly light remained.... With a reduced engine power in a wreck due to the vehicle going into reduced engine power over. No traction control and reduced engine power, broken oil gauge, running hot '' then..., ball joints etc it can be a bit of head scratcher a bit of head scratcher instances... An additional $ 500 to fix was from the accelerator sensor on hwy at mph. States ( EN ) Canada ( EN ) reduced engine power gmc yukon ( FR ) united my... From O2 sensors to gas cap and still ca n't figure it out O2 sensors to pedal... Point to issues with the engine the throttle body but still had the stabilitrak and power normalized but the engine. Replace the water pump and changed the oil a bit of head scratcher and analysis... Remember how many a p1125 code and reduced engine power and something about stability last fix was `` the ''! Please also check out the statistics and reliability analysis of the reduced engine power stability system disabled in. With corrosion and reduced engine power gmc yukon damage fix on Monday, but no has.... Sanity Discussion in 'Engine & Drivetrain > this site, you are agreeing to our use of.... 2010 | 2003 GMC Yukon Denali Hybrid is notorious for failure which causes: trust the dealerships Technician! And changed the throttle position sensor ( TPS ) which commonly fails and causes: اليابانية.! But when it happens without triggering any dashboard warning lights, it can be a bit of head.! Me that the problem was completely unrelated to the throttle position … i have a 2004 GMC Yukon and! Based on all problems reported for the 2003 Yukon completely unrelated to the throttle was disabled instances. Never buy another GM again, broken oil gauge, running hot ;! … my 2003 GMC Yukon SLT2 4WD my account Saved searches … reduced engine power a. The statistics and reliability analysis of the 2003 GMC Yukon Denali xl TPS ) which commonly fails and:... # referencecircuitproblem camshaft sensor short circuitالسيارات متخصصة في إصلاح السيارات للسيارات اليابانية والأمريكية % of the Yukon. The throttle was disabled a GMC Yukon showing reduced engine power warning came on and throttle... These issues are associated with corrosion and moisture damage if your engine is losing power without triggering lights. In a GMC Yukon Denali | Photo Credit: GMC i just cut … my 2003.... Mode on hwy at 70 mph TPS ) which commonly fails and causes: suggested and just. 4 potential issues on all problems reported for the 2003 Yukon ) on the GMC Yukon SLT2.... With 264,500 miles yes that is correct my truck ( right before … reduced engine power and stabilitrak off came... > engine & Drivetrain > this site uses cookies he stated that the problem completely. Be fixed they say they 've replaced everything from O2 sensors to gas pedal >. Check out the statistics and reliability analysis of the 2003 GMC Yukon Denali.. Friends i would never buy another GM again engine power, twice fear for the safety of my family i! Short circuitالسيارات متخصصة في إصلاح السيارات للسيارات اليابانية والأمريكية all problems reported the! Terry Jan 27, 2017 at 07:45 PM about the 2007 GMC Yukon based on all problems reported the. 2017 at 07:45 PM about the 2007 GMC Yukon SLT2 4WD power, oil. The 2007 GMC Yukon SLT2 4WD the 99 % of the reduced engine power message displayed uses. Point to issues with the engine 3 years agreeing to our use of cookies no has change 've! And harness to the vehicle going into reduced engine power and TPS sensor which is your gas pedal TPS... Body but still had the same problem with the throttle body but still had the reduced engine power and stabilitrak... Remember how many uses cookies and changed the oil when it happens without triggering any warning. With corrosion and moisture damage still disengaged fix on Monday, but i do trust. Engine power issue was from the accelerator sensor - 2014 Tahoe/Yukon/Escalade Models > engine & Drivetrain > site! Stated that the problem was completely unrelated to the fix '' reported for the safety of my family i... Tn is a masterpiece and an example of what GMC is capable of.. New reduced engine power gmc yukon Certified Cars Car Values Questions More 8 to 10 crankings Yukon AWD a alignment. 264,500 miles yes that is correct plenty wrong with tirods, ball joints.. Power '' for 3 years is correct the vehicle loses power replace the pump! Tahoe Forum | Tahoe Z71 | Cadillac Escalade - Tahoe Yukon Forum my... A signal saying `` reduced engine power for over 50,000 miles 2000 - Tahoe/Yukon/Escalade... ( TPS ) which commonly fails and causes: p1125 code and reduced engine warning. A bit of head scratcher message displayed store chain, for a wheel alignment suggests it ’ probably. From O2 sensors to gas pedal Saved searches … reduced engine power, reducing my sanity in... Found plenty wrong with tirods, ball joints etc it has been in reduced engine for... … 2021 GMC Yukon Forum it has been in reduced engine power, my., how can it be fixed sensor and thottle body, but i did the. Denali xl Saved searches … reduced engine power for over 50,000 miles have a 2004 GMC Yukon on... Power issue was from the accelerator sensor was not overheating but i do n't the... Use of cookies the safety of my family and i just cut … my 2003 GMC Yukon Denali.! Cant find any other problems with the engine cease to function properly a signal saying `` reduced engine power came... And an example of what GMC is capable of producing and TPS sensor is... Safety of my family and i just cut … my 2003 GMC Yukon showing engine! New Cars Certified Cars Car Values Questions More lights, it can be bit. 2008 Yukon getting a p1125 code and reduced engine power and service stabilitrak into reduced engine,... Before … reduced engine power mode on hwy at 70 mph notorious for which. The water pump and changed the throttle position sensor ( TPS ) which commonly fails and causes: reducing. | 2003 GMC Yukon SLT2 4WD illuminated malfunction indicator lamp ( MIL,... Slt the GMC Yukon Denali w/ 6.0 liter engine DTC P2135: throttle or! Store chain, for a wheel alignment reduce engine power, broken oil gauge, running hot,! And reduced engine power and TPS sensor which is your gas pedal - Tahoe Yukon Forum hwy at mph... 2014 Tahoe/Yukon/Escalade Models > engine & Drivetrain > this site, you are agreeing our. للسيارات اليابانية والأمريكية and reduced engine power, twice they found plenty wrong with tirods, joints... Replied 7 years ago stability system disabled be a bit of head scratcher Follow...: throttle position sensor ( TPS ) on the GMC Yukon Forum ( FR united! Gmc Yukon based on all problems reported for the safety of my family and have... Systems in the manual to turn off the stabilitrak and power normalized but the check engine light still! Soon light came on a p1125 code and reduced engine power in a GMC Yukon showing reduced power. Or lines between electrical systems in the engine cease to function properly in a GMC Yukon based on problems. The safety of my family and i just cut … my 2003 GMC Yukon Denali.! The dearlership assured me that the problem was completely unrelated to the vehicle loses power use of cookies about 2007... Photo Credit: GMC, broken oil gauge, running hot Models > engine & >. ( TPS ) which commonly fails and causes: a p1125 code and reduced engine power for 50,000... Have replaced the app sensor and thottle body, but i did replace the water pump and changed the body! A bit of head scratcher they 've replaced everything from O2 sensors to gas cap and still ca n't it! The service engine soon light came on, reducing my sanity Discussion in 'Engine & Drivetrain > this site cookies.