See Figure 3. If the TP sensor drive slot orientation is not aligned, use a small flathead screwdriver to ­gently rotate the TP sensor drive slot clockwise to the wide open throttle (WOT) position. Unsubscribe any time. Reduced Engine Power Causes: Chevy Tahoe. California consumers may exercise their CCPA rights here. Listen to the latest Underhood Service podcast. The throttle position sensor (TPS) on the Chevrolet Silverado 2500 HD is notorious for failure which causes:. 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. 4. Install the throttle body, bolts and nuts. Warning: Approved safety glasses and gloves should be worn when performing this procedure to reduce the chance of personal injury. This air is a vital part of the combustion process that is at the heart of your engine, so monitoring the air intake is of course equally vital. Rapidly depress the accelerator pedal from the rest position to the WOT position and release the pedal. 20. Average repair cost is $10 at 56,200 miles. 2003 Chevy Trailblazer-CHECK ENGINE LIGHT AND ... Dec 23, 2011 Reduced Engine Power message Jul 29, 2008 2003 Chevrolet Silverado - Reduced Engine Power Nov 3, 2007 Trailblazer - Reducted Engine Power Aug 3, 2006 More results from www.topix.com Reduced Engine Power Message Displayed on GM Vehicles Febreze Car Air Freshener Lawsuit Dismissed, read stories from drivers who praise our work. This is a scary situation if the problem happens while you are driving down the highway or in heavy traffic. Refer to the SPS procedures in SI. I pulled over shut it off. Anyways, I pulled over, turned off the key. Reduced Engine Power message displayed. Grasp and hold the throttle body in the previously hand-held upward position. Use cleanliness in order to prevent damage. After the engine has been off for about five or ten minutes, then it seems to be fine but then may start all over again. Now I know how a Ford owner feels most of the time. It will go into "reduced engine power" every few minutes. Chevy Truck Forum | Silverado Sierra GMC Truck Forums. Ensure that the gasket is accounted for and remains with the old TP sensor cover. Feb 11 2013, 12:48am. 2008-’11 GMC Canyon, Savana, Sierra, Sierra Denali, Yukon, Yukon Denali, Yukon XL, Yukon XL Denali auto zone gets the p1125 code everytime it does it. The 2010 Chevrolet Silverado has 6 problems reported for decreased engine power. It will then run fine, sometimes for a few miles, sometimes for weeks. Front ¾ vehicle photos © 1986-2018 Autodata, Inc. dba Chrome Data. 2009 Chevy Impala Engine Light And Reduced Power; Check Engine Light Code P0300 On GM 2.2L and 2.4L; 1997 Pontiac Grand Am ABS And Check Engine Light; Buick Lesabre Stalls Out And Check Engine Light ; ACTUATOR Car Repair Check Engine Light Computer Engine Problem Sensor Throttle Body Post navigation. 18. Are DTC P1516, P2101 and/or P2176 set? Now it happens in varying temps, but still mostly under 40 degrees outside temp. Clean the throttle body bore and the throttle plate using a clean shop towel with GM Top Engine Cleaner, P/N 1052626, or ACDelco Upper Engine and Fuel Injector Cleaner, P/N X66-P, or an equivalent product. K. kirker912 New member. 29. By. 2008-’11 Chevrolet Avalanche, Colorado, Express, Silverado, Suburban, Tahoe Grasp the TP sensor cover and carefully lift it up and separate it from the throttle body. Do not immerse the electronic throttle control components in cleaning solvents of any type. Place the TP sensor cover in the position as shown in Figure 6. 2008-’11 Chevrolet Tahoe Two-Mode Hybrid Watch the following two videos that show how a damaged wire caused a Reduced Engine Power message to appear in a 2007 Chevy HD. Model year 2008-’10 vehicles must have the engine control module (ECM) reprogrammed with the latest software calibration as indicated in Step 35 of the procedure after the installation of the throttle position sensor cover. Confirm the TP sensor drive slot orientation is aligned in the TP sensor cover as shown. Observe the ECM module DTC information. I cannot find an answer anywhere. Perform the Throttle Learn Reset Procedure. 26. Install the first TP sensor cover clip (1) in the position shown in Figure 7. Some times it will clear the engine hours, sometimes it won't. Open the hood. For now, I can drive with a code reader hooked up and it takes exactly 12 sec to clear the code and I'm driving again. This condition may be caused by the difference between TP Sensor 1 and TP Sensor 2 exceeding a calibrated value for more than two seconds. 2008-’11 Cadillac Escalade, Escalade ESV, Escalade EXT GM and GMC vehicles have been plagued by throttle position sensor problems along with the dreaded reduced engine power or limp mode. My 2003 Silverado 2500HD has been the very best vehicle I have ever owned. I can stop, turn the key off and restart within a few seconds. Position and install the TP sensor cover to the throttle body. VIDEO: How Can You Tell If A Spark Plug Is Worn Out? Discard the old TP sensor cover, gasket and terminals. Use a Tech 2 or a multiple diagnostic interface (MDI) module for reprogramming. 2009-’11 Cadillac Escalade Two-Mode Hybrid • If it displays Agree, proceed to Step 29. 2008-’10 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. 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. 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. Average failure mileage is 186,800 miles. Secure a rubber band around the throttle body and TP sensor cover as shown in Figure 1. Get notified about new defects, investigations, recalls & lawsuits for the. 2008 Chevy 2500 Crew Cab Duramax has engine light on and reduced power. Of Autobeef LLC, all rights reserved found nothing, coolant, air flow, all rights reserved body to... Hours, sometimes for weeks every few minutes facing upward not respond sit about... Like i was on 3 cylinders by wire '' throttle wear and tear parts.... 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