Gm p2135

2005-2006 Pontiac GTO. Equipped with a 4.8 5.3 6.0 or 7.0 V-8 Engine. The following diagnosis might be helpful if the vehicle exhibits the symptom (s) described in this PI. Condition/Concern: A vehicle may be brought into the dealer for a reduced power message, and DTCs P0120, P0220, P1516, P2101, or P2135.

This article applies to the Chevrolet Silverado 1500 (1999-2006). The drive-by-wire (DBW) system uses sensors to determine how much force is being used to depress the gas pedal so it can easily open and close the throttle body, thereby impacting how fast the truck is traveling.G35 Check Engine Light FIX! (CODE P2135 on G35/350z)If you own a G35 or 350z and get code P2135. There are 2 possible fixes. 1. Faulty Throttle Position Sens...I have a 2006 Cobalt showing engine power reduced, and reading OBD codes: P2135 P2176 P1516 AND P060E. I have replaced. I have a 2006 Cobalt showing engine power reduced, and reading OBD codes: P2135 P2176 P1516 AND P060E. I have replaced the throttle body, the engine harness, the throttle position sensor, and the injector harness.2003-2006 Chevrolet Avalanche, Corvette, Express, Monte Carlo, Silverado, SSR, Suburban, Tahoe, Trailblazer. for reduced engine power. p0120 is throttle position sensor, ( tps ). p0220 is relates to tps, p1516 tps is out of range. p2135 is a throttle body code, the throttle body needs replaced. but before you do it replace tps first to see if ...Around 72000. GM Bob : You are still under warranty on time 5/13/2014 miles only good to 36k. GM Bob : You also have 2 open recalls. GM Bob : some dealer may go 50/50 on the repair. GM Bob : I think the last one I did would have cost around $300-$400.

P2135 Throttle Body, a year ago, this cel came on, with reduced power. I was getting off the freeway, but had to stop due to an accident, then when I stepped on it, the car was dead, still on, but no go. ... instead of paying for it. Maybe GM (Breanne) would help me with this. Dec 28, 2011 #4 THE YETI Director of Operations. Supporting Member ...May 26, 2022 · P2135 is a “Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation” diagnostic trouble code. It means your car’s computer, the Powertrain Control Module (PCM), detects an issue with either one of the two throttle position (TP) sensors or the pedal position sensors . I have 2008 Chevy Malibu with less than 120,000 miles & codes P0013 exhaust CMP, P0121 & P2135 check engine light & power failure on instrument panel. A service shop found the codes & advised P0121 & … read more1. With a scan tool, verify that DTC P2135 is set as Current or in History. ⇒ If DTC P2135 is set as Current or in History, proceed to Step 2. ⇒ If DTC P2135 is not set as Current or in History, refer to Diagnostic Trouble Code (DTC) List - Vehicle or Symptoms - Engine Controls in SI. 2. Turn OFF the ignition. 3. Open the hood.What are the Symptoms of P2135. The error code might not be the first sign that something is wrong. In fact, this particular code may have several warning signs. First, you might experience a hesitation or possible surge when accelerating. Second, your RPMs might display as higher than usual.P2135 is a generic powertrain code that can affect any make or model of vehicle that has a "drive by wire" throttle system (almost every vehicle made today). P2135 TPS Switch "A/B" Voltage Correlation If your Chevy Aveo has P2135 it is considered "drive by wire". Which means that it uses sensors and actuators to control.This 2010 Chevy Impala has a very intermittent glitch that puts the PCM into REDUCED POWER mode. Quite annoying.Each time it throws a P0641 - 5V Reference #1...

Has anyone run across a P2135 with a GM Performance E-Rod Crate motor. Fundamentally it is an E67 LS3. I have had an intermittent issue with the engine starting and immediately dying. Usually it will eventually run fine. I have tuned the engine and it runs great except for the intermittent running condition. It is throwing code P2135 Throttle Position (TP) 1-2 …If has a throttle cable. The ecm will average the tps signal and should be ok to drive. Look under the hood if you see a mechanical cable going to the throttle body. Before you keep driving it. helpful? Computer problem 2006 Chevy Impala 6 cyl Front Wheel Drive Automatic 70k miles my check engine light came on, went to autozone...Jan 27, 2023 · 2007 Isuzu NPR GM 6.0L P2135 was created by JalenPryde. This truck came in in limp mode with active P2135 throttle position mismatch code, It had a new reman throttle body installed, new batteries and a new alternator. Checked output voltages of TPS1 and TPS2 with a scope and found that TPS2 would have consistently erratic readings when (0.0v-1 ... P2138 Reduced Power on GM vehicles How to fix P2138 Reduced Power on GM vehicles. GM has issued a technical service bulletin # 07-06-04-019D to address a P2138 Reduced Power issue. The P2138 trouble code may be stored in the computer along with a check engine light. The P2138 Reduced Power bulletin applies to the following vehicles:P2135 is a generic powertrain code that can affect any make or model of vehicle that has a "drive by wire" throttle system (almost every vehicle made today). P2135 TPS Switch "A/B" Voltage Correlation If your Chevy Avalanche has P2135 it is considered "drive by wire". Which means that it uses sensors and actuators to control.

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Most often, it is seen with GM brand vehicles, and code P1516 indicates that the Throttle Actuator Control (TAC) system isn’t working as it should. This control system monitors the data from the throttle and compares it with the target. If these don’t line up, the ECM determines there’s a problem.I periodically get P2135 code (maybe once a month or so) and I can't seem to get this problem fixed. Most people are able to fix this problem by simply replacing the TPS Sensor. I can't seem to make it go away. "Stabilitrak Off" goes off then Reduced Engine Power. Really need to eliminate this problem in order to keep our family in this vehicle.Don't be a parts changer!!! Here is a perfect example why is not recommended to replace parts just because of a code. Take your time find the evidence and fi...Customer: 2006 Chevy Impala Code p2135 engine entered reduced power mode the last 2 days. Sounds like a TPS issue where should I start in trying to diagnose this? Answered by Ron Z. in 1 min 12 years ago. Ron Z. 18+ years of experience. 40,272 satisfied customers.

I periodically get P2135 code (maybe once a month or so) and I can't seem to get this problem fixed. Most people are able to fix this problem by simply replacing the TPS Sensor. I can't seem to make it go away. "Stabilitrak Off" goes off then Reduced Engine Power. Really need to eliminate this problem in order to keep our family in this vehicle.The P2135 is a throttle position code. The others all seem to indicate a data bus communications with various other parts of the truck. ... A forum community dedicated to Chevy Colorado and GMC Canyon owners and enthusiasts. Come join the discussion about performance, modifications, troubleshooting, towing capacity, maintenance, and more! ...GM provides two separate discounts to the family members and friends of GM employees. To receive the Family First discount, a purchaser must be a family member of a GM employee. Em...If you own a 2008-2011 year model Chevrolet, GMC, Cadillac or Hummer vehicle and are experiencing a "Reduced Power" message, have under 120,000 miles and les...In simple terms, the P2135 code signifies an issue with the Throttle/Pedal Position Sensor/Switch ‘A’ / ‘B’ Voltage Correlation in Chevy vehicles. When this code flashes, it indicates that the voltage readings from the throttle position sensor ‘A’ and ‘B’ are inconsistent with each other. The throttle position sensor, an ...P2135 TPS Switch "A/B" Voltage Correlation If your Chevy Malibu has P2135 it is considered "drive by wire". Which means that it uses sensors and actuators to control P2135 is a generic powertrain code that can affect any make or model of vehicle that has a "drive by wire" throttle system (almost every vehicle made today).Check Engine Light Truck Reduced Engine Power or Stalling - Code P2135. Installation Instructions. Video Transcript. Created on: 2020-08-04. This video shows you how to diagnose a problem with your throttle body position sensors with a check engine code P2135.2003-2006 Chevrolet Avalanche, Corvette, Express, Monte Carlo, Silverado, SSR, Suburban, Tahoe, Trailblazer. for reduced engine power. p0120 is throttle position sensor, ( tps ). p0220 is relates to tps, p1516 tps is out of range. p2135 is a throttle body code, the throttle body needs replaced. but before you do it replace tps first to see if ...Good luck! P2135 is a generic powertrain code that can affect any make or model of vehicle that has a "drive by wire" throttle system (almost every vehicle made today). P2135 TPS Switch "A/B" Voltage Correlation If your Chevy Trax has P2135 it is considered "drive by wire". Which means that it uses sensors and actuators to control.O que é o código Chevrolet P2135? Código P2135 Chevy significa “Correlação do sensor 1-2 de posição do acelerador (TP). O que é um código GM P2135? O código de erro é comum em algumas marcas e modelos GM. O código de erro indica um problema com o sensor de posição do acelerador.Good luck! P2135 is a generic powertrain code that can affect any make or model of vehicle that has a "drive by wire" throttle system (almost every vehicle made today). P2135 TPS Switch "A/B" Voltage Correlation If your Chevy Sonic has P2135 it is considered "drive by wire". Which means that it uses sensors and actuators to control.

P2135. I've been throwing this code the last few days and it's kicking it straight into limp mode. When I first experienced it, it was when I would give it a hard acceleration into higher RPMs. Now it's to the point where it will just kick into limp mode at idle and throw the code. The TB I have is practically new, maybe a year old and is GM ...

2008-2009 Chevrolet TrailBlazer 2008-2011 Chevrolet Avalanche, Colorado, Express, Silverado, Suburban, Tahoe ... If DTC P2135 is not set as Current or in History, refer to Diagnostic Trouble Code (DTC) List - Vehicle or Symptoms - Engine Controls in SI. 2. Turn OFF the ignition. 3.Good luck! P2135 is a generic powertrain code that can affect any make or model of vehicle that has a "drive by wire" throttle system (almost every vehicle made today). P2135 TPS Switch "A/B" Voltage Correlation If your Chevy Trax has P2135 it is considered "drive by wire". Which means that it uses sensors and actuators to control.4 Posts. #35 · Apr 11, 2015. Well im having the same problem but this is a problem that has been going on and off for months. Got the "engine power reduce", the P2135, the service stabilitrak, and check engine light. I replaced the throttle body; lights came back on. I replaced the gas pedal; light came back on.Found 1 result (s) for your search. Code P2135 throttle pedal position sensor. Is this a recall repair and should GM cover this for my 2010 chevy malibu. Expert's Assistant chat. Customer: Code P2135 throttle pedal position sensor. Is this a recall repair and should GM cover this for my 2010 chevy malibu. Answered by roybelding in 18 mins 7 ...It covers the throttle position sensor if a code P2135 is set. There are many code that the throttle body can set, no other code is covered under this extended coverage. [gallery]75561 [/gallery] 10 Silverado 1500 Crew LTZ 4x4 6.2L Nav-Roof-R/Entertainment-NHT GBM/Ebony.Cadillac Mechanic: Dan. Apply dielectric grease to throttle body connector to see if that helps. This code sets when ECM detected that the TP Sensor 1 (TP1) disagreed with the TP sensor 2 (TP2) by 7-10% for 1 second. The TP sensors are built into throttle body assembly so if putting grease on connector doesn't help you will need to replace ...P2135 TPS Switch "A/B" Voltage Correlation If your Chevy Suburban has P2135 it is considered "drive by wire". Which means that it uses sensors and actuators to control P2135 is a generic powertrain code that can affect any make or model of vehicle that has a "drive by wire" throttle system (almost every vehicle made today).

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The automotive trouble code P2135 throttle/pedal position sensor/switch A/B voltage correlation refers to a problem related to the throttle's ability to open and close properly. In the 1990's automotive manufacturers began industry-wide installation of "Drive by wire" throttle control technology. 2008-2009 Chevrolet Equinox, Uplander 2008-2011 Chevrolet Impala 2008, 2011-2012 Chevrolet Captiva 2008-2012 Chevrolet Colorado, Malibu 2009-2011 Chevrolet Traverse ... With a scan tool, verify that DTC P2135, P0121 OR P0221 is set as Current or in History. If DTC P2135, P0121 OR P0221 is NOT set as Current or in History, no further action is ...This Equinox kinda made me think and question my diagnosis but I believe that I've made the right call. We will find out in a few days I guess lol. And if yo...2004 chevy w4500 6.0 gas eng code p2135 truck no throttle intermitted when it has no throttle Tps 1 And 2 does not agree tried throttle body throttle body connector new module new pedal assm. Submitted: 10 years ago. Category: Chevy. Show More. Show Less. Ask Your Own Chevy Question.P2135 Throttle Control System on 2011 GMC Terrain and how to fix it.Expert's Assistant chat. Customer: This vehicle has been a real headache! Code P2135 and it is intermittent. It has had a new throttle body and wiring connector, new module, new pedal position sensor and all the wiring has been tested for a voltage drop and taken out of the harness and visually inspected. A extra ground has been run to the ...Mar 5, 2016 ... GM Engine & Exhaust Performance - Xlink/TB/Pedal Issue? P1516/P2135 - So my Truck has been acting up a lot lately, going into Reduced Engine ...2003 CHEVROLET SILVERADO. V8. 4WD. AUTOMATIC. 88,000 MILES. Washed truck, next morning engine light appeared with codes p0220, p1516, p1518, p2135, p2135. And my DIM message center says Reduced Engine Speed, it won't accelerate when giving it gas. Sunday, March 22nd, 2009 AT 9:15 AM.P2135 is a generic powertrain code that can affect any make or model of vehicle that has a "drive by wire" throttle system (almost every vehicle made today). P2135 TPS Switch "A/B" Voltage Correlation If your GMC Yukon has P2135 it is considered "drive by wire". Which means that it uses sensors and actuators to controlGeneral Motors has developed a self-driving car called the Cruise AV that has no steering wheel or pedals. Learn more at HowStuffWorks. Advertisement Get ready for a self-driving c... ….

P2135 is a generic powertrain code that can affect any make or model of vehicle that has a "drive by wire" throttle system (almost every vehicle made today). P2135 TPS Switch "A/B" Voltage Correlation If your Cadillac Escalade has P2135 it is considered "drive by wire". Which means that it uses sensors and actuators to controlHave an o8 silverado keep getting code p2135,have replaced throttle body and sensor a month ago and still keeps coding, - Answered by a verified Chevy Mechanic. We use cookies to give you the best possible experience on our website. ... 2005 chevrolet trailblazer throws p2135,po641,p2135,po641.07 chevy Impala P0121 & P2135 Haven't had many issues with this car, it threw the p0121 first, then a couple days later, today, threw p2135. The way I'm thinking, having both these codes show up is pointing to my pedal position sensor being faulty. Im thinking the p2135 boils down to the pedal position and throttle position sen...P2135 is a generic powertrain code that can affect any make or model of vehicle that has a "drive by wire" throttle system (almost every vehicle made today). P2135 TPS Switch "A/B" Voltage Correlation If your Chevy Cobalt has P2135 it is considered "drive by wire". Which means that it uses sensors and actuators to controlGood luck! P2135 is a generic powertrain code that can affect any make or model of vehicle that has a "drive by wire" throttle system (almost every vehicle made today). P2135 TPS Switch "A/B" Voltage Correlation If your Chevy Sonic has P2135 it is considered "drive by wire". Which means that it uses sensors and actuators to control.1049 posts · Joined 2009. #3 · Jan 29, 2014. The same code and EXACT problems happened to me on my 2010 last week. The cause of these issues is the throttle position sensor (the black cover on the side of the throttle body).When you google "GM P2135 code", you will find that GM issued a FSB on this problem back on 4/16/2012.Fallo en el sensor/interruptor de posición del acelerador: El código P2135 puede ser causado por un fallo en el sensor o interruptor de posición del acelerador, lo que afecta la correlación de voltaje entre los sensores "A" y "B". Cableado defectuoso: Un cableado defectuoso o dañado puede causar una mala conexión entre los sensores de ...P2135 TPS Switch "A/B" Voltage Correlation If your Chevy Suburban has P2135 it is considered "drive by wire". Which means that it uses sensors and actuators to control P2135 is a generic powertrain code that can affect any make or model of vehicle that has a "drive by wire" throttle system (almost every vehicle made today).P2135 is a generic powertrain code that can affect any make or model of vehicle that has a "drive by wire" throttle system (almost every vehicle made today). P2135 TPS Switch "A/B" Voltage Correlation If your Saturn Outlook has P2135 it is considered "drive by wire". Which means that it uses sensors and actuators to controlP2135 is a generic powertrain code that can affect any make or model of vehicle that has a "drive by wire" throttle system (almost every vehicle made today). P2135 TPS Switch "A/B" Voltage Correlation If your Chevy Blazer has P2135 it is considered "drive by wire". Which means that it uses sensors and actuators to control Gm p2135, Under certain conditions the control module commands the engine OFF. DTCs P0120, P0122, P0123, P0220, P0222, P0223, and P2135 are TypeA DTCs. Ignition ON, observe the scan tool TP sensor 1 voltage parameter. The reading should be between 4.75-0.33 volts and change with accelerator pedal input., See 2007 Chevrolet Tahoe / Suburban technical service bulletins (TSBs) at TrueDelta, organized by model year and problem area. ... position sensor cover for concerns regarding a indicator lamp illuminated reduced power message displayed and dtc p2135 set. 05/21/18:, Cuando se establece el código P2135, el ECM descubrió que el sensor de posición del acelerador y el sensor de posición del pedal del acelerador, no están produciendo las señales esperadas que deberían ser. Cuando el ECM detecta esto, puede poner tu vehículo en una condición a prueba de fallas que limita la apertura del acelerador al 5-15%., Code P2135. This happened to me twice now. Trying to clean off the transaxle of all the coolant from the leak (seems good now). I get P2135 which is the throttle sensor. The worse thing is it goes into limp mode. 5 mph is pretty slow to get home on. I did discover using the manual shifting, I can get to 10 mph. The first time I sprayed a lot., P2135 is a generic powertrain code that can affect any make or model of vehicle that has a "drive by wire" throttle system (almost every vehicle made today). P2135 TPS Switch "A/B" Voltage Correlation If your Ford F150 has P2135 it is considered "drive by wire". ... GM Automatic Transmissions. 200-4R Identification and Specs; All About the ..., So CEL comes on for a day, I go to Autozone and they tell me it's a code P2135. This is what the definition says: Definition: Throttle position sensor (TPS) 1-2 correlation. Explanation: The ECM has detected that TPS 1 and TPS 2 disagree more than 4.5 percent for less than 1 second. Probably Cause: 1. Poor electrical connection., Jan 7, 2023 · Most often, it is seen with GM brand vehicles, and code P1516 indicates that the Throttle Actuator Control (TAC) system isn’t working as it should. This control system monitors the data from the throttle and compares it with the target. If these don’t line up, the ECM determines there’s a problem. , The P2135 code has to do with your vehicle's relationship between the engine control module (ECM), the accelerator pedal, and the throttle body that pushes air into the engine. Most modern ..., Symptoms of Code P2135. Check engine light illumination. Poor fuel economy. Surge or even possibly a hesitation when accelerating. Difficult to start the vehicle. Poor throttle response. A sudden reduction in the engine power. Limp mode. Poor acceleration., P2135 is a generic powertrain code that can affect any make or model of vehicle that has a "drive by wire" throttle system (almost every vehicle made today). P2135 TPS Switch "A/B" Voltage Correlation If your Chevy Camaro has P2135 it is considered "drive by wire". Which means that it uses sensors and actuators to control, The P2135 code has to do with your vehicle’s relationship between the engine control module (ECM), the accelerator pedal, and the throttle body that pushes air into the engine. Most modern ..., So I ran the codes, I got a few o2 sensor codes and P2135. I came up with "Throttle Position Sensor/ Switch A`/B` Voltage Correlation". Ive been searching for hours and I am not sure exactly where to start. I was told it should be the Accelerator Pedal Sensor and not the TPS and then I was told the opposite., P2135 Chevrolet - aveo. 0 votes . 916 views. asked Jul 31, 2018 by Tudor. A7E code or p 2135 .engine light is coming on and off all the time more it's in the morning. Vehicle: 1.6 L aveo 08 p2135; a7e; 1 Answer. 0 votes . answered Jul 31, 2018 by Carguy1 (13.4k points) Hi there, This code is for the throttle position sensor. ..., About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ..., The ad agency business has gone through many changes in the last 20 years. The internet and the growth of social media have made dramatic differences to the way in which consumers ..., Aug 4, 2020 · Shop for New Auto Parts at 1AAuto.com http://1aau.to/c/229/C/throttle-body-assemblyIf you have noticed that your engine is weak, your vehicle won't accelerat... , The P2101 code will typically state the description as "Throttle Actuator "A" Control Motor Circuit Range/Performance.". This can be difficult for beginners or DIYers to untangle, but it ..., P0135 is a generic powertrain code that applies to OBD-II-equipped vehicles. It indicates a problem with the front oxygen sensor on Bank 1, specifically with the heated circuit of the oxygen sensor. The ECM is responsible for tracking the function of the oxygen sensor and its heated circuit. With the heated circuit, the oxygen sensor requires ..., Causes and Fixes Chevy/GMC P2135 Code: Throttle/Pedal Position Sensor/Switch A / B Voltage Correlation. Symptoms of a Bad Throttle Position Sensor and How See if it Has Failed Video. •..., Trouble codes p0120 p2135. I have 2003 Chevy avalanche 5.3. Trouble codes p0120 p2135. I have replaced the pedal position sensor, the throttle body sensor and the wiring harness for the throttle body. Hello and welcome! My name is ***** ***** I can assist you with your question. I am a former master tech and I have worked in this field for 20 ..., 2008-2009 Chevrolet TrailBlazer 2008-2011 Chevrolet Avalanche, Colorado, Express, Silverado, Suburban, Tahoe ... If DTC P2135 is not set as Current or in History, refer to Diagnostic Trouble Code (DTC) List - Vehicle or Symptoms - Engine Controls in SI. 2. Turn OFF the ignition. 3., Jul 18, 2014 ... Truck throws a P2135 code every so often, at all the wrong times of course. Most recently on my way back from an 1100 mile road trip., In simple terms, the P2135 code signifies an issue with the Throttle/Pedal Position Sensor/Switch 'A' / 'B' Voltage Correlation in Chevy vehicles. When this code flashes, it indicates that the voltage readings from the throttle position sensor 'A' and 'B' are inconsistent with each other. The throttle position sensor, an ..., Does the TAC module receive a signal from the fuel system? GM has the truck and they have been testing the TPS system. The mechanic said he ..., P0014 is a relatively common trouble code for vehicles that have Variable Valve Timing (VVT). This includes the Chevy HHR. VVT adjusts the position of the camshaft(s) to maximize the combustion efficiency of the motor. P0014 means that the camshaft position is too far advanced from where it should be in relation to normal operating, Chevrolet TSB 11-06-04-007B. Some customers may comment on an illuminated malfunction indicator lamp (MIL), with a Reduced Engine Power message displayed. The technician may observe on a scan tool DTC P2135: Throttle Position (TP) Sensor 1-2 Correlation set as Current or in History. This condition may be caused by the difference between the TP ..., Jim. Participant. Greeting all I have a 2007 Chevy Cobalt LS 2.2L. I purchased this car used in January of 2016 I am having a problem with the. code P2135 Engine Power Reduced! I replaced the flowing parts throttle body, pick tale to the throttle body, throttle pedal position sensor, purge valve. I had the computer re-flashed after I replaced ..., 2003-2006 Chevrolet Avalanche, Corvette, Express, Monte Carlo, Silverado, SSR, Suburban, Tahoe, Trailblazer. for reduced engine power. p0120 is throttle position sensor, ( tps ). p0220 is relates to tps, p1516 tps is out of range. p2135 is a throttle body code, the throttle body needs replaced. but before you do it replace tps first to see if ..., Chevrolet Silverado 1500 (New Model) 2019 2019 Equipped with 5.3L L82, 5.3L L84, 6.2L L87, 4.3L LV3, 2.7L L3B, or 3.0L LM2 Silverado 1500 2020 2021 ... P2127 P2128 P2135 P2138 P2147 P2148 P2150 P2151 P2153 P2154 P2156 P2157 P216B P216C P216E P216F P217B P217C P217E P217F P2228 P2230 P227C, p2135 not happy. Hi everyone i have a 2011 chevy cruze 1.4t. My wife was driving to work and the car went into limp mode causing someone to rear end the car. The is sitting in a parking lot. I took my pocket scanner and came up with the code p2135 for tps., Chevrolet TSB 11-06-04-007C. Some customers may comment on an illuminated malfunction indicator lamp (MIL), with a Reduced Engine Power message displayed. The technician may observe on a scan tool DTC P2135: Throttle Position (TP) Sensor 1-2 Correlation set as Current or in History. This condition may be caused by the difference between the TP ..., Years back, I had an old 88 Chevy pickup that would randomly go into limp home mode. After a few headaches, the fix for that was replacing the ECM. This Tahoe has has some really weird stuff happening from time to time. gauges that would move around, engine RPM that would increase/decrease randomly, weird shifting., P2101 & P2135 Help! So on Wednesday, out of the blue, my 2009 Sierra LC9 5.3L (111,000 miles) threw code P2135 along with the warning chimes and "Service Stabilitrak", "Service Traction Control" & "Reduced Engine Power" limp home mode. I shut her off and waited a minute, and started it up and drove home like nothing ever happened.