One of the most obvious indicators of a possible ECM issue is when the check engine light illuminates on your dashboard. This will drive down the vehicle’s fuel economy, which means you’ll be paying more money at the gas pump. Often times, it will start burning more fuel than usual just to sustain its normal driving needs. When the engine control module is glitchy, the engine might not always know the right amount of fuel to deliver to the internal combustion process. But even if you experience it one time, you should do something about it right away. The engine stalling will likely be inconsistent, so it may stall sometimes and then clear up at other times. This doesn’t necessarily mean anything is wrong with the engine itself, but it does mean there could be a malfunction taking place with the engine control unit. 2) Engine StallingĪlong with a weak engine performance, you could actually experience the engine misfiring or at least stalling a lot. If you notice any kind of acceleration issues, then it could be because of a bad engine control module. This will ultimately affect your ability to accelerate the vehicle as you step on the gas pedal. Your engine will start to have bad timing and it won’t get power as efficiently as it used to from the internal combustion process. 1) Bad Engine PerformanceĪ big symptom that you will notice from a bad engine control module is poor engine performance. Here are 5 common symptoms of a bad engine control unit in a vehicle. But it is important that you recognize these symptoms as they arise, so you can do something about it right away. If you have a bad ECM in your vehicle, the symptoms will become more than obvious. Top 5 Symptoms of a Bad Engine Control Module Top 5 Symptoms of a Bad Engine Control Module.Need it faster? EXPEDITED shipping options are available at checkout, and will ship within 24 hours. Price includes FREE ground shipping, after 48 hr processing/programming time. We can also supply a VIN for custom non-factory projects. Your Duramax VIN will be required for the latest factory released update, kindly provide your VIN with your module, or contact us. If your module is not serviceable, this charge will become a credit applied toward any hardware purchase or programming service. Since the GM database fees are charged to us before programming, this service is non-refundable. Local drive-up and drop off service available, contact us for an appointment before placing your order. This service is normally performed on our bench after you ship your module. This VIN-based factory programming service assures that your module will “plug and play”, error free with the latest update for your specific vehicle options. A new, refurbished or used ECM does not contain the correct code for your specific vehicle configuration.
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