2008 Chevy Silverado Ecm Problems - 2015 Silverado 6 Speed Transmission Problems: Know The Fixes.

I did a deep dive on the ac system and found that when this problem …. craigslist butler pa pets I have an 06 Chevy Duramax that I changed my alternator on started right up then started flashing all lights on my dash even on my mirror and clicking in the dash …. At the BCM connector, ECM and TCM I get 10V on the GMCAN + and - wires. Over the years it has seen continual improves and refreshes until it is unrecognizable from that long-ago time. TEST 1: Connect the positive DMM lead to DLC pin 4 and the negative DMM lead to the negative battery terminal, using jumper wires if necessary. 8L engine size and matching part number 12622141. I picked it up from the dealer and a few hours later it threw a code for the fuel pump module again. 0 bar when the maximum boost pressure should be 1. Learn how to reset the computer in your Chevy Silverado truck with this easy and informative video. Coolant Temperature Sensor/Sender/Switch Transmission Code: 4L60-E; 4 Speed Automatic Transmission; Use Together With Mating Connector Part Number: PT1798; 2 Way; Male; Mating Connector With Leads Use OE Number: 88987993. From there, it’s a simple matter of finding the screws or bolts that hold the ECM in place, loosening them, and removing the old ECM. Is your Silverado, Sierra or GM Truck giving you electrical issues? In this video we go over the electrical grounds which might cause potential issues in yo. Signs of faulty ECC's include a constant check engine light, gear shifting problems in automatic transmission vehicles and sudden stopping and jerking. Step Two: Locate the plug pictured below, The plug is under the dash near the steering column. 2008 Chevy Tahoe Ecu Programming And Diagnose The Most Common Signs of an ECU or Control Module Failure - (How To Diagnose ECU Problems). breaking news salina ks If you’re looking into buying a dependable new or used truck, you’ve likely come across the 2020 Chevy Silverado in your search. Generally speaking, you don't want much more than 15 volts. Our Chevrolet ECM (Engine Control Module) category page offers a comprehensive range of pre-programmed OEM engine control units specifically designed for Chevrolet vehicles. 2008 Silverado LT, Crew Cab, 2WD,LB Thanks for your offer. However, the two units operate independently. No communication with Glow Plug Control Module. A failing ECM can mimic transmission problems. I changed out the battery with a new one and. The ECM then checks with the BCM to obtain battery temperature and state of charge information. Going over symptoms in regards to what the vehicle is doing including DTCs. In 10 minutes exactly the SECURITY (lock) light will turn off. Not sure if its just wiring or a bad radio but it is factory. one piece behind the voice actors Swap the high-volume oil pump for a standard oil pump. 3l 34000 miles about a month and a half ago and it has had this problem since day 1. According to Pickup Truck Talk, the 2022 Chevy Silverado 1500 has a few problems that buyers should be aware of. A bad ground can cause all sorts of weird issues. The relays are arranged in a series parallel (S/P) configuration that allows the engine control module (ECM) to operate both fans together at low or high speeds. There is a problem with the active fuel management systems on ALL 2007-2008 Sierras that have the 5. Cleaning or replacing the connectors can help ensure a strong connection. Very difficult to solve your problem without that …. Can you look at the reading in the ECM that is. as we have a look at this 2014 Chevy 1500 5. Model_Silverado 2500 (47) Model_Silverado 3500 (47) Year_2008 (9) Year_2009 (9) Remanufactured Chevrolet Duramax Engine Control Module - Lifetime Warranty. The ECM monitors the park/neutral position switch and the clutch pedal position sensor. Tech2 won't communicate with ECM, TCM, EBCM, TCCM, IPC. The engine knock sensor sits on the intake manifold and is responsible for sensing vibrations caused by the engine. Therefore, it’s essential to consider the broader electrical system when diagnosing transmission issues. Chevrolet Forum - Chevy Enthusiasts Forums. Identify the wires leading to the CKP sensor. So just recently bought a 08 crew cab long truck and trying to straighten things out. 4) Changed Edge programmer back to "Stock mode" - engine starts. Brake issues are another common problem with the Chevy Silverado. 3-liter V8 was dropped in 2022 from the Silverado engine lineup. I put in 2 new batteries because one …. chippewa roofer boots 0 Vortec Max 4wd truck will typically start with a warning light to service stabilitrak and traction control, then the transmission will immediately start to shift extremely hard from 1st to 2nd and even some from 2nd to 3rd. P0880 This code represents a battery supply voltage or ground problem with the TCM. 2007-2010 Chevrolet Avalanche, Equinox, Silverado, Suburban, Tahoe 2008-2010 Chevrolet Express 2009-2010 Chevrolet Traverse 2007-2010 GMC Acadia, …. So, that’s where you should start your investigation. Jan 18, 2010 · Chevrolet Forum - Chevy Enthusiasts Forums. By combining them, the PCM can better regulate their functions together. find the dark green/white wire. Jun 21, 2021 · June 21, 2021 by Jason. Again, this is an issue that is often traced back to the front axle engagement switch. Idle vehicle 4 minutes (achieve closed loop) 2. While flashing a 2007 Silverado Classic with a LBZ, EFILive lost communicating with the ECM half way through the programming. The AFM system, or Active Fuel Management system, is used to limit the power of a GM 6-cylinder or 8-cylinder engine and help increase its fuel economy. Engine is hard to start, hesitates, blows white smoke, and is only making 2000-3000psi of fuel pressure all without throwing a code. If it’s higher than that, then something is drawing current, and it must be addressed. If you use both the seat and back heater button, it will remain on but will only heat the seat. smokester said: I think I found the real problem. BCM problems can also mask issues with other modules …. 2007–2012 Chevrolet Avalanche, Corvette, Silverado, Suburban, Tahoe 2008–2012 Chevrolet Silverado Hybrid, Tahoe Hybrid 2007–2012 GMC Sierra, Yukon Models 2008–2012 GMC Sierra Hybrid, Yukon Hybrid 2008–2009 HUMMER H2 Equipped With Gasoline Engine and 6 Speed Automatic Transmission 6L80 (RPO MYC) or 6L90 (RPO MYD). If you would rather consume this content via a video, check out our GM 6. Need connector pinout/diagrams for 2008 Chevy Silverado LTZ with Navigation and BOSE sound system. Equip cars, trucks & SUVs with 2008 Chevrolet Silverado 1500 Engine Control Computer from AutoZone. When inserting the key, the engine may crank, the engine may sound like it is 'trying' to start. Sep 24, 2018 · Check battery to engine block cable attachments at the engine, and the engine to chassis ground strap (near the starter, I believe). Accelerator Pedal Sensor With Fixed Pedal; Complete Assembly. Chevy Mechanic: GM Tech (Cam) Turn the key on and attempt to start the car, It may crank, it may start and stall or it may do nothing at all, this is fine, still cycle the key to start then release the key back to run. The vehicle was taken to shottenkirk Chevrolet quincy (1537 n 24th st, quincy, IL 62301, 217-919-0388) where it was diagnosed that the fuel rail pressure sensor failed. P0011 is a common (and serious) OBD II diagnostic trouble code that can occur in the Chevy Silverado. roaring 21 no deposit bonus 2023 If no power under these conditions, start back tracking into your harness and find out why no power at that starter. Car 2008 Chevy Tahoe Ecu Programming And . Valid for ZIP Code 98848 as of 04/16/2024. Just picked up a 2002 2500HD with a 6. I replaced the starter (bc the guy that bench tested it said it was bad but didn't change anything) I've checked all grounds and power everything seems to be good. Assuming you are referring to the Chevrolet Silverado, according to Consumer Reports, they have averaged a lifespan of around 100,000 miles. The LMM is an extremely capable engine. If the wafers are damaged, it is better to replace the ignition system. Silverado wiring chevy gta526 2008 chevy silverado exhaust diagram Silverado exhaust chevrolet 2001 systems cat back magnaflow system2001 …. Jun 18, 2019 · First… he probes FUSE # 56 (Key ON→ HOT in RUN or START). I have power and grounds at the dlc but no communication so no codes or data to give. You will also find related videos on music. Corrosion, moisture and solenoid damages. P1000 – P1099 (Fuel and air metering and auxiliary emission control) P1011. near me garage sale I am looking for the wiring diagram for a 2004. 2016 Silverado LT 4x4 Crew Cab. The factory stereo installed in the Chevy Colorado only has an AM/FM stereo tuner and a CD player. emt readiness exam 2 This problem only affects trucks equipped with the 5. This shop is not accepting online appointments at this time. •U1886: Battery Energy Control Module Lost Communication with Engine Control Module (ECM) • U1888: Hybrid Powertrain Control Module Lost Communication With …. for the Cache, Under your hard drive, program files (86) General MMotors Tis2Web file, then delete the TLC. curved arch doorway trim I have read other forums and spoke with my dad (mechanic for 39 years) and this is what I've gathered as possibilities so far: 1) fuel pump is going bad. In this video, you will learn 4 symptoms of a bad or failing engine control module. Ok so i got a new ECM tuned up from MMLMM and now the truck wont start. I have done some research and came up with a few problems that I may be facing. You may also notice problems with the transmission, like shifting issues. Positive or negative battery cables. This module belongs to the hardware code 12612384. We need to know if the ECM or TCM is storing this code. I replaced both and gauge still would not work and I was still getting the code. Many times, it isn't the fault of the ECM, but a problem with voltage drop somewhere in the circuit path. 2008 - 2009 Chevrolet Tahoe Communication Computer Module 25826499 (Fits: 2008 Chevrolet Silverado 2500) LIFETIME MONEY BACK GUARANTEE!! QUALITY USED PART!! Pre-Owned: Chevrolet. In this video I explain why your ecm/pcm is not communicating with scan tool or the ecm is not communicating with the tcm, bcm, . Checked for power at pin 86 while cranking and 0 volts was found. When the ignition is on, this gauge indicates the battery. Silverado/Sierra HD L8T No No No No No hardware on L8T. The ECM, BCM, battery, and alternator work as a …. I know driving it for a while would have made the light go out as well but I was interested to see if there was anything clearly identifiable showing whether a 5 second battery connect worked vs plus headlight vs 10 minute disconnect and so on. 2 highly incapable of handling additional horsepower without the addition of a lift pump. Cardone Remanufactured Engine Control Computer 77-2397F. If you install a new control unit in your Chevrolet Silverado, you can expect a variety of improvements. I have 12 volts at the cig lighter, but only 4 volts at the OBD2. The problem could be the result of an AFM (active fuel management, V8 to V4 models) lifter that unlocks once the engine is started. Basically, there are two temp sensors, one for the gauge and one for the ECM. 8L Vortec Common Problems & Reliability video below: 1. connect pin32 (rd/wh batt + ) to pin47 (gy fuel pump 12+) this will power the pump to run and check for a faulty fuel pump. The following part numbers are compatible with this unit:. Scanner showed coded U0100, U0101, and C0379. 2 Inability to start the vehicle. The tech 2 will show how many times the module has been reprogrammed and the calibration number. So, it’s mostly a code for V8+ engines. In either case, the concern may occur consistently or intermittently. The high speed data line includes the BCM, PCM, TCM, VCIM, FPFCM, EBCM, TCSCM, and the TBCM. The 2008 Chevrolet Silverado has 447 problems & defects reported by Silverado owners. When the ECM wants to initiate Silverado starter crank operation, it supplies power to the starter relay control coil in the underhood fuse box on terminal #86. According to Consumer Reports, 4 percent of Chevy Silverado and GMC Sierra owners reported some kind of Major Engine issue, including full engine replacements, as well as cylinder head …. repo cars for sale under $1000 near me craigslist As he shows, the vehicle has clearly identified a problem with the 5V REF2 circuit (P0651). Throws a P0700, P2544, U0073, U0101. Get your hands on a TBI fuel pressure test kit. Broken Valve Spring: Generally, a broken valve spring on this engine family will cause a tick noise and/or an engine misfire. The 2015 Chevy Silverado 1500 is powered by a. 3L ENGINE COMPUTER 12612384 VIN PROGRAMMED. 0L engine size and matching part number 12617174. Learn More #2: Engine Sputtered And Died. 3 that came in with the engine light on and a code P129D-00 that won't . This code typically sets in conjunction with one or more of these codes: P1760, P0562, P0561, U1000, U1301, U1305, U2105 and P1571. #56 ECM/Ign fuse keeps poping only when the truck starts and runs for a few seconds. CHEVY SILVERADO LOUD TICKING POPPING ENGINE NOISE AFM LIFTER FAILURE AND DELETE 31:08. 3, V8 311,000 miles, leaks oil now at rear main seal. Access our Silverado 2008 Harness Routing Views Repair Guide by creating an account or signing into your AutoZone Rewards account. The Vortec 6000 is a thirsty engine, a point which every Chevy owner agrees with. Almost all of the essential functions of the vehicle are controlled by the ECU/ECM. This Engine Computer also referred to as an Engine Control Module (ECM), Engine Control Unit (ECU) & Powertrain Control Module (PCM) is a guaranteed replacement for all 2000 Chevrolet Silverado PCM models with a 4. peaceful protest memes Open TLC/TIS on the computer used to program the vehicle. So, when it goes bad, it can knock your Equinox’s air fuel ratio off. Some mid size wires the go to a mega fuse block on the firewall. This light means there’s an issue with your anti-lock brakes. Fix or replace the torque converter clutch. It’s an unfortunate fact that a stuck 4WD is not the worst of the Chevy 4×4 problems. Went ahead and changed front tank sending unit ($125) still …. One flash, two flashes represents 12. Clean or replace connectors: Corrosion or damage to the connectors in the knock sensor circuit can cause a low signal and trigger the P0332 code. Test for continuity between pins 9 and 69 at the TCM. The ECM is located in the vehicle's power distribution center, which is located beneath the hood. Apr 20, 2020 · All vehicle computers, modules or whatever we'll call them, have the ability and necessity to retain memory. I put a 250 amp alternator on my truck almost a year ago, and have had zero problems. 0L I6 LZ0 was introduced for the refreshed 2022 Silverado 1500 model, and replaces the 3. We figure a weak coil caused this. Transmission issues start again. uft curriculum agreement Turn the ignition switch to the “On” position for 11 minutes a third time. Transmission: 14 percent have problems. There should be at least 2 relays for the fans, maybe 3. Stabilitrak uses a complex system of sensors to detect whether or not your Chevy Silverado is appropriately responding to your input in emergencies. Driving home from work, same issue but then the engine warning light came on!. This bus is referred to as the controller area network (CAN) and it allows all the modules to …. After this, the scan tool will instruct you to bleed each wheel. No mystery, no hassle, just follow the steps. The cooling fans and fan relays receive battery positive voltage from the underhood fuse block. The system itself is activated when the engine reaches certain perimeters, such as a cruising highway speed. Sep 1, 2017 · In this video I diagnose a 2008 Chevy Silverado with a no crank complaint and no communication with the Engine Control Module. each 10 minute relearn procedure. Shuddering transmission when cold. This is the maximum operating weight as specified by the manufacturer. During which he connected up an OBD2 multi gauge and had me get on it to check boost readings from ECM. Denali Dually: Duramax Tuner/ Banks- iDash, boost tubes, cold air intake, monster exhaust and rear diff cover/ B&W Companion 25K 5th wheel/ Power Stop Z36 drilled & slotted rotors. The water temp gauge is stuck at the lowest reading as if it's not working. So, what is p0449 chevy Silverado 2008? P0449 is an error code that indicates a problem with the Evaporative emission control system (EVAP) or a faulty solenoid circuit. Set your voltmeter to the 20 volt DC scale when checking the battery. Expert Advice On Improving Your Hom. to clear the code it would be best to get a code reader (comes in handy trust me) and clear it that way (you can take it to your local parts store to do this as well for free) Mike. ; the vehicle must also have a good alternator and a strong …. Now, go back to the interior of Your truck and turn Your headlight switch to the ON position; this'll drain the remaining power from the ECM. 2) Install a fuel pump relay that is know to be good. This condition may be caused by a poor BCM ground at G218. body / paint problems 13 NHTSA complaints: 14. Unhook battery, clear codes they come back. best talent tree in evony All dash lighting remained normal. This may be because the cigarette lighter fuse has blown, or other shorts to ground in the circuit. Fuel related misfires can be caused from not enough fuel. They are getting older nowadays, having been in production …. The only way to make changes is to buy an unlocked ECM from a vendor and program it to your liking. But the engine lifter failure in V8 engines can’t be ignored. Learn More #2: Power Door Locks Stopped Working 2008. The first method involves the battery and has been the way many people choose to reset their onboard computers for many years. I have a 2008 chevy silverado 3500 with a 6. It is located on the left side of the dashboard. redneckred March 25, 2020, 4:17am 1. Alternatively, you can call us at (305)-387-7759. 3 liter with Automatic Climate Control. This Engine Computer also referred to as an Engine Control Module (ECM), Engine Control Unit (ECU) & Powertrain Control Module (PCM) is a guaranteed replacement for all 2008 Chevrolet Silverado 1500 PCM models with a 5. Load tested the circuit with a sealed beam headlight and it passed. 2008 Mid-Size Truck Navigation System. Jul 21, 2022 · New Circuit/System Testing for Parasitic Draws. The engine has actually proven a lot more reliable than RAM’s disastrous EcoDiesel and Ford’s already retired mini …. ALL THE PARTS YOUR CAR WILL EVER NEED. A bad PCM-power relay may cause the vehicle to crank, but not start, or sometimes not even crank at all. How to Diagnose a No Crank, No Start Chevy Avalanche or Silverado 5. Lock the front hubs, which is done electrically and confirmed when your 4x4 light goes on. 20 posts · Joined 2008 Add to quote; Only show this user Started tuning the truck the other day and it was in the first steps as far as checking current ECM and it lost connection with the ECM. Current Chevy Trucks, SUV's, Crossovers & Vans. you need to remove that to see …. As soon as I got it (first week), transmission locked into limp mode. Tighten connectivity or replace the throttle position sensor. Find out how to access AutoZone's Power Distribution Schematics Repair Guide for Silverado 2008. P1516 Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance. This can be performed by using the OBDII connector. The problem-the idle is HORRIBLE! The truck idles right around 500rpm and every 10-15 seconds (sometimes more often sometimes not) the engine. Not only at the battery, but on the starter, engine and frame! Positive side as well as the negative side. HVAC: 14 percent have problems. Solution 3: First, try to clean the wafers using the vacuum pump to remove dust and debris. Aug 14, 2020 · Duramax Engine LLY 2004. Just got it to the shop and it has a no crank/ no start condition. 7eb engine code There is a connection from the passenger side battery to the fuse box that has a connection that is sometimes faulty, connects, then doesn't, then connects, then …. This location is approximately 18 inches from the ECM connectors (1) and on top of the generator (2), as shown below. If the alternator is high, that should just be an issue with the alternator. A faulty BCM can manifest in numerous ways: Electronics Malfunction: The BCM is responsible for the regulation of a plethora of electronic …. Going back to the original problem, the truck would either start (while pressing the accelerator) or it wouldnt, and would run rough when it did start. 2009 Saturn Aura XE (wifes car). The ECM then stores a code in its memory that indicates the nature of the malfunction. Repairing Engine Control Modules can be performed in a couple of ways. 3L All modules are VIN programmed, flashed and updated with the latest dealer software to improve drivability and fuel mileage. Our Chevrolet ECM Repair includes. I've had two seemly competent mechanics work on it and still no AC. The most common problems reported by owners of the 2018 Chevy Silverado include: Transmission issues: Some owners have experienced jerky shifts, delayed gear engagement, or slipping gears. If it determines the ignition module has caused a problem with the system, it will turn on the check engine light. Bad ECM Symptoms: Chevy Colorado. Start up the Chevy Silverado and check to see if the fuel gauge is now working correctly. The Check Engine Light usually illuminates when the computer detects a problem with any of its sensors or circuits. Watching this video will help you diagnose to see if it's time to replace. 2008-2011 GM part # 12612384 - Engine Control Module. There is a solenoid in your GM converter that causes the the torque convertor clutch (TCC) to engage and disengage. The short answer is NO, you cannot swap in a used PCM, ECM or module from a junkyard. If the oil level is too low, the camshaft actuators. The code is P0601, I've attached the print out they gave me. who is bill hemmer dating Just be sure all cables and connections are clean and tight. Recognizing symptoms of a failing Body Control Module (BCM) is integral to maintaining your vehicle’s optimal functionality, safety and longevity. The average cost for a Chevrolet Silverado 1500 Powertrain Control Module Replacement is between $537 and $582. Remove the nut from the negative battery cable using a socket set or wrench. A popular car modification is the stereo system. GM has issued a voluntary emissions recall for certain units of the 2022 Chevy Silverado HD equipped with the 6. The contact stated that the engine stalled without warning while driving at 30 mph. Once it sits for a while, everything will work again, and the tech 2 will communicate. GM shared the news this morning, and released the first images of the upcoming electric Chevrolet Corvette. Start the engine and let it run for five minutes. Jan 25, 2012 · GM: 2007-10 Chevy Silverado 2500, 3500 HD, GMC Sierra 2500, 3500 HD (6. This service requires that you remove the part from your vehicle and send it to UpFix for repair. Hey guys, workin on an 08 chevy topkick/c series ambulance with an lmm. Transfer case selector switch (on the right). Usually, a problem with the ECM-power relay will produce a few symptoms that can alert the driver of a problem that should be serviced. Over oiling a air filter can get on the MAF sesnor, & cause this code to be set. EPS is a relatively simple system. First… he probes FUSE # 56 (Key ON→ HOT in RUN or START). 3 your running, was it a iron or aluminum block. #1 · Apr 17, 2010 (Edited) I need help my ECM-B fuse (10 Amp) continues to blow and I need ideas of where to start looking for the short. 3L engine size and matching part number 12629001. The 2015 Chevy Silverado 1500 is a reliable, powerful, and comfortable pickup truck that has been a top choice for drivers for years. P0304 is a cylinder-specific misfire code, meaning only your Silverado’s fourth cylinder has a misfire. 3405 Rogers Road, Wake Forest, NC (47. 2L Chevrolet Silverado (1500, 2500HD, 3500HD). Select the “Automatic Bleed Procedure” on the scan tool. However, there’s no guarantee the repair will work long-term. start-relearn-attempts, remembering to turn the key to “OFF” (not run) between. 2019 Chevy Silverado 2500 High Country L5P CC/SB S&B CAI, Banks Derringer & Pedal Monster w/iDash, Banks differential cover, …. While this light can illuminate as a result of a long list of troubles, having a bad ECM is one of them. Look for the LT DR circuit breaker. No power to cluster or ac control module. PO332 means there is a problem in the Knock Sensor 2 Circuit Low Input (Bank 2). Silverado chevy wiring diagram 2004 fusible 2500hd ignition wire 4x4 ls link 2003 starter start trying find drawing going result2500 chevy silverado 6. , which seem to be common symptoms. 0 engine suffers from poor gas mileage, loss of power, throttle position sensor failure, exhaust manifold leak, active fuel management system failure, water pump failure, and engine knocking. It has direct ties to its infamous small block engine that first appeared in 1955. A new voltage drop test in Service Information (SI) can help in determining which component may be causing a parasitic draw. Send in your ECM and we will perform a DOD delete tune permanently in the software so that it will only run in V8 mode. In this step, you need to place the ignition key to your Chevy Silverado and turn it the engine on or off position. When it arrives, the battery-electric sports. 2007 chevy classic 2500hd 4x4 (my baby mobile/toy hauler) 2010 mitsubishi endeavor (wifes baby mobile) 1995 saturn sl1 (gas saver) 1995 jeep wrangler 4. unblocked movie sites on google Chevrolet is an American icon, known for the Camaro, Corvette, Malibu, Impala and more. One of the easiest tests to perform is to see if there is power and ground being supplied to the ECM. If it is causing an engine misfire, it may or may not be felt and it may only occur at specific operating conditions, such as high RPM driving, etc. 3L Powertrain Control Module (PCM/ECM/ECU) PCM for a 2008 Chevrolet Silverado 5. candyland casino no deposit bonus codes september 2022 Check both sides of the Crank Fuse 10 Amp for 12 VDC, while your helper has the Ignition Switch turned and held in the START Position. 6L V8 L5P turbodiesel Duramax engine due to a faulty Engine Control Module (ECM). Replacing the PCM fixed the problem 2008 Chevy Tahoe Ecu Programming And Diagnose. With the AC compressor relay back in place, start your Chevy Silverado. However, on a positive note, since General Motors switched to the 10-speed automatic transmission, it has been getting fewer complaints. The problem-the idle is HORRIBLE! The truck idles right around 500rpm and every 10-15 seconds (sometimes more often sometimes not) …. Even with this, once you get to highway speed, the truck ran but …. •The Data Link Resistor 1 is open or shorted. I've got a new ECM on order with the dealer, but it's already been over a month and even the Chevy corporate help department says it'll be at least a few more months before I get a new ECM. Mar 29, 2022 · Here is a brief look at a couple of reasons that would cause your ECM to go bad, including the symptoms to help you diagnose a faulty or damaged unit. Air conditioning problems: Some drivers reported the air conditioning system failing to cool properly or not working at all. This includes the ignition system.