Are you frustrated with your GM vehicle’s engine light being on and your remote start not working? It can be quite a nuisance when you’re trying to conveniently start your car from a distance, only to find that it won’t respond. But fear not, as I believe I can offer some insight into this issue and help you find a solution.
With over 10 years of experience as a TV Technician, I have encountered numerous cases where customers faced similar problems with their GM vehicles. Through my years of working in this field, I have gained valuable knowledge and expertise in troubleshooting and resolving issues related to engine lights and remote start functionality.
In this blog article, I will delve into the possible reasons behind your GM engine light being on and why your remote start may not be working. I will share my insights and experiences, providing you with potential solutions to address these frustrating issues. So, if you’re tired of being left in the dark with your engine light on and your remote start malfunctioning, keep reading, as I believe I can help you find the answers you’re looking for.
Gm Engine Light Is On And Remote Start Won’t Work: 5 Possible Reasons
1. Faulty Engine Sensor
One of the potential reasons why the engine light is on and the remote start won’t work in your GM vehicle could be a faulty engine sensor. These sensors are responsible for monitoring various aspects of the engine’s performance and relaying information to the onboard computer.
If a sensor malfunctions or sends incorrect data, it can trigger the engine light and prevent the remote start feature from functioning properly. Common sensors that may cause this issue include the oxygen sensor, mass airflow sensor, or throttle position sensor.
2. Low Battery Voltage
Another possible reason for the engine light being on and the remote start not working is low battery voltage. The remote start feature requires a certain level of battery power to operate correctly. If the battery voltage is too low, the system may disable remote start to prevent further battery drain.
It’s important to ensure that your vehicle’s battery is in good condition and properly charged. If the battery is old or weak, it may be time for a replacement. Additionally, check for any parasitic draws or faulty electrical components that could drain the battery unnecessarily.
3. Malfunctioning Key Fob
A malfunctioning key fob can also contribute to the engine light being on and the remote start feature not working. The key fob is the device used to remotely start the vehicle, lock/unlock the doors, and perform other functions.
If the key fob’s battery is low or the internal circuitry is damaged, it may not communicate properly with the vehicle’s systems. This can result in the engine light being illuminated and the remote start feature being disabled. Consider replacing the key fob’s battery or obtaining a new one if necessary.
4. Anti-Theft System Activation
GM vehicles are equipped with anti-theft systems designed to deter unauthorized access. In some cases, the engine light may come on and the remote start may not function due to the anti-theft system being activated.
If the system detects a potential security threat, it may disable certain features, including remote start. This can be caused by issues such as a faulty key, an attempted break-in, or a malfunctioning alarm system. Consult your vehicle’s manual or contact a professional for assistance in resolving this issue.
5. Engine Control Module (ECM) Error
The engine control module (ECM) is the main computer that manages various systems in your GM vehicle. If the ECM encounters an error or malfunction, it can trigger the engine light and affect the remote start functionality.
An ECM error can be caused by a range of factors, such as software glitches, damaged wiring, or faulty components. To diagnose and resolve this issue, it is recommended to seek the assistance of a qualified mechanic or dealership who can perform a thorough diagnostic scan and address any underlying ECM issues.
In conclusion, if you find that the engine light is on and the remote start won’t work in
FAQs
1. Why is the engine light on in my GM vehicle?
The engine light in your GM vehicle can come on due to various reasons, including issues with the engine, emissions system, or other related components. It is a warning indicator that something is not functioning properly and requires attention.
2. What could be the possible causes for the engine light to be on?
There are several potential causes for the engine light to illuminate in your GM vehicle, such as a loose gas cap, faulty oxygen sensor, catalytic converter problems, issues with the spark plugs or ignition system, or even a malfunctioning engine control module (ECM). It is recommended to have the vehicle diagnosed by a professional to determine the exact cause.
3. Can the engine light being on affect the remote start function?
Yes, in some cases, the engine light being on can impact the remote start function of your GM vehicle. Many modern vehicles have integrated systems that disable certain features, such as remote start, when a fault is detected in the engine or related components. This is done to prevent potential damage or further issues.
4. How can I troubleshoot the remote start function if it’s not working?
If your remote start is not working in conjunction with the engine light being on, there are a few steps you can take. First, ensure that the remote start system is properly programmed and activated. Check the vehicle’s battery to ensure it has enough charge. If these basic checks do not resolve the issue, it is advisable to consult the vehicle’s manual or contact a certified technician for further assistance.
5. Should I continue driving my GM vehicle with the engine light on?
It is generally not recommended to continue driving your GM vehicle if the engine light is on. The light indicates that there is a problem that requires attention, and driving with a potential issue can lead to further damage or safety hazards. It is advisable to have the vehicle inspected and diagnosed by a professional as soon as possible to address the underlying problem.
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