If I turn off the truck for ten seconds or more it runs fine then does it again. Turn over the throttle body and use a flathead screwdriver to remove the two clips (1, 2) as shown in Figure 2. Check engine light; 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. 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 Federal regulators, such as the National Highway Transportation Safety Administration (NHTSA), have received multiple complaints about a potentially dangerous engine flaw in 2016-2018 Chevrolet Malibu vehicles. When i got to the shop, I checked … Ensure that either device is updated with the latest available software version before performing the reprogramming event. During reprogramming, the battery voltage must be maintained within the proper range of 12-15 volts. Lightly depress the intermediate gear to verify that it is fully seated and the gears are engaged. Verify that the TP sensor cover gasket has remained in the TP sensor cover. I lost most power and it felt like I was on 3 cylinders. Rotate the throttle body plate to the WOT position. The airflow sensor in your c… reduced engine power? Now it happens in varying temps, but still mostly under 40 degrees outside temp. 24. 25. 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. 2 Answers I got code p2176 I changed out the tps still got same problem did not have this problem with other engine just changed engine out now cant … Ensure that the gasket is accounted for and remains with the old TP sensor cover. Reduced Engine Power message displayed. The engine light would flash anytime I was above 50 mph, throwing a misfire. If necessary for ease of the clip installation, secure a rubber band around the throttle body and TP sensor cover. Verify the battery voltage is more than 12 volts but less than 16 volts before proceeding with ECM reprogramming. Connect the electrical connector to the throttle body. Listen to the latest Underhood Service podcast. Confirm the TP sensor drive slot orientation is aligned in the TP sensor cover as shown. it's an open wheeled dirt ump modified that pat and i had … Feb 11 2013, 12:48am. Observe the ECM module DTC information. I cleaned my throttle body, cleaned my (spotless) mass air flow sensor, unplugged the throttle positioning sensor and got a different code. 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. Could you tell me what the problem could be. 15. Shut if off and waited 15 min and off I went. Use your thumb to maintain contact with the intermediate gear. Use a Tech 2 or a multiple diagnostic interface (MDI) module for reprogramming. It will go into "reduced engine power" every few minutes. Every shop says, replace the throttle body. Turn on the ignition. Verify that the female throttle actuator motor terminals have remained in the TP sensor cover and have not been retained on the throttle actuator motor male terminals (Figure 5, 2). 1999 … Front ¾ vehicle photos © 1986-2018 Autodata, Inc. dba Chrome Data. I have an 03 chevy 2500hd and the reduced engine power light came on and the throttle dont work it happened the other day and I just let it idle f... reduced engine power - 2003 Chevrolet Silverado 2500 HD 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. The throttle position sensor (TPS) on the Chevrolet Silverado 2500 HD is notorious for failure which causes:. 2009-’11 Chevrolet Silverado Two-Mode Hybrid Duramax Hard Parts. Notice: Do not mount the throttle body in a vise. some days it does it 20+ times a day, … – If the intermediate gear falls out and impacts a hard workbench surface or the floor, abort this procedure and replace with a new throttle body assembly. The complaints are organized into groups with data published by vehicle, vehicle component, and specific problem. Caution: Handle the electronic throttle control components carefully. 5. Mass Air Flow Sensor, Nothing. 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. Disconnected from the protective shipping wrapper observe the TP sensor cover rotate the throttle position sensor TPS! The gears are engaged and am not ready to replace half of the TP sensor cover for missing female actuator. 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