If the service battery charging system indicator suddenly comes on while driving at night, locate a mechanic workshop to prevent the engine from dying down. Then, activate the No-Load Test and Load Test. The service battery charging system on your Chevy Silverado is a warning message that appears on the dashboard screen, and it indicates low charging, damaged battery, faulty alternator, rusting of terminals, malfunctioning ECU, old equipment, excessive usage, and damaged electric cables. the battery as been change, the alternator has been change. The Chevy service battery charging system is a series of electrical components that allow a Chevrolet service battery to be charged. the computer was update also and it still will charge for a liitle while then . I've noticed that when the service charging system warning comes on the voltmeter reads well over 14v. Set your multimeter to 20volts direct current (DC) and start the vehicle. The action you just performed triggered the security solution. If there is a problem with the battery charging system, a SERVICE BATTERY CHARGING SYSTEM message will appear in the Driver Information Center (DIC) and/or the charging system light comes on. This is because the service battery charging system indicator tells you that the car depends on the stored battery power alone to power each of its electronic systems. JavaScript is disabled. Thanks. You can test it through the following steps; Inspect your vehicles alternator to make sure that it is working properly. The charging system will enter a battery sulfation mode which tries to increase the vehicle charging when the charging system voltage is less than 13.2 V for about 30 minutes. Again, the voltage regulator helps to keep the battery fully charged. Nope it's plugged in. Proceed towards connecting the battery positive and negative leads to their respective battery terminals. For a better experience, please enable JavaScript in your browser before proceeding. Siouxicide 11-01-2009, 11:02 AM 01. . If I don't start it up at I'll keep y'all posted. The most common sign is displaying a red color icon that stands for a vehicle battery. If it reads up to 9.6 volts at 21C, it means the battery has good capacity. the negative and then the positive Again, inspect the battery terminals and ensure it is up to 12 volts without loads. The message seems to only come on while the truck is idling or moving at slow speeds (like when I drive down my muddy driveway or stopped at a light). New battery. My Tahoe does the same thing. I am travelling for one month. Jan 24, 2013 #9 Position the Battery Tester towards its ammeter operation. For a better experience, please enable JavaScript in your browser before proceeding. First thing to check would be that battery cables are nice and tight. If you have issues with your driving belt to the extent that it prevents the alternator from functioning properly, it can make the service battery charging system indicator come on. If your Tahoe's engine won't crank or cranks very slowly, then the most likely culprit is a weak or dead 12v battery. This morning the "Service Charging System" message came on and the battery light - Answered by a verified Chevy Mechanic . bulbs. Ignoring the service battery charging system warning or battery signal light is dangerous. I replaced the alternator with a napa premium reman and also replaced the RVC module that is attached to the bat tray and the ground cable runs through it. This only happens every couple of days or every other. If your battery light is coming on and off, it means that your charging system is faulty. Merry Christmas to you as The battery current sensor converts current measurements into a pulsed 5-volt signal to the BCM. Corroded Wires & Connections are another reason why the service battery charging system indicator comes on. Most ppl in the car don't notice it but it's enough that I do. Next, you should implement the No-Load Test and Load Test. 956 Great Deals out of 14,947 listings starting at $2,250. The BCM will command Fuel Economy Mode when it measures air temperature to be at least 32F but less than 176F, and the battery current is less than 15 amps but greater than -8 amps, and the SOC is greater than or equal to 80 percent. 77 Great Deals out of 1,559 listings starting at . The voltage regulator produces a fixed output voltage, which keeps the system from overloading. It's been almost 2 weeks since we took to the dealer. Did you get to the bottom of this? If your vehicle loses power completely, it will fail to start. Fear lights flash on and off . The warning went away, but just came back the other day. Very well is likely the alternator with an intermittent problem. My guess judging by the gauge it was about 15-16v. I've never gone to start the truck and had a dead battery so I want to say the alternator is doing its job. Do Not Sell or Share My Personal Information, 2007 tahoe service battery and charging system comes on moniter needle goes discharge and charge, 09 Tahoe New battery, new starter and alternator is good amd car still wont start, Contains hate speech or attacks an individual, Nudity, pornography, or sexually explicit content. "service Charging System Soon" Question.. 2011 Tahoe LTZ battery goes dead because of intermittent draw on battery. You will have to replace your alternator if he finds the voltage below normal, as the old one is defective. It has been becoming more frequent in the past few weeks. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Whenever your vehicle refuses to start, it is caused by a bad battery that couldn't hold a charge. You'll then touch the positive side of the voltmeter to the positive battery wire. Your mechanic will know better how to test your car batterys strength. "Service Battery Charging System" warning . Here are the basics of how your Tahoe's charging system works: A serpentine belt turns the alternator. Trying to fit in 05 Tahoe. How old is your battery Ramiro? It is making a How do I remove 2nd row bench seats in I'm going to try and pull the alternatir this weekend and have it tested. Good luck. I have done it so many times now that I can have the cover off in about 10 minutes. He said Ben, if your talking about the one that is right there by the cylinder head on the passenger side, it is good and tight, haven't checked it for voltage drop or resistance yet. Chevy and GM Battery Current Sensor on Amazon:. JavaScript is disabled. The Chevy service battery charging system is a series of electrical components that allow a Chevrolet service battery to be charged. Therefore, youve to employ the services of an experienced mechanic for inspection and servicing. Once it knows initial SOC, it can compute battery needs based on actual current usage, generator output, battery temperature, and battery capacity. If the battery When something goes wrong with the charging system, the service battery charging system warning will always illuminate. It monitors the batterys state-of-charge (SOC) during ignition off and ignition on cycles by measuring open circuit voltage when the battery hasnt been used for several hours. chevy Uplander 2009 LT short wheelbase, Impala 2003, jeep cherokee Laredo 1990, chevy citation 1984 2.8 v6, vauxhall Firenza1972, rambler american . Service battery charging system 40 Answers. I will My daily driver is a 2011 Silverado with the 5.3 motor. For a proper check-up and servicing, you can also move your car to any good mechanic as soon as possible. If that turns out ok then hook up a millimeter to the battery while the car is running. I've replaced the Check the positive wire and the fuse link to the alternator. To solve your vehicle charging system issue, you should check it yourself, and you should do it the right way as well. The water pump usually uses the same belt that powers the alternator. when i take it to an auto store they hook it up and say everything looks fine with the When we noticed this the battery voltage was fluctuating all over the place. I keep having the Service Battery Charging System light come on. In modern vehicles, the battery charging system is comprised of the alternator, the battery, and the electronic control unit (ECU). The only" For a better experience, please enable JavaScript in your browser before proceeding. As said, it might occur for several reasons; it could be a problem of low voltage battery, alternator, battery connections, broken wire, and others. But this time it only lasted it before at 30 seconds before the message went away. Additionally, the device may need to be re-configured to use the battery. Now let's get down to how you can do this. passes the load test, then Id move to Service charging system light - Service charging system light keeps coming on even after replacing two new batteries; what could be the problem? If you click them and 30 Great Deals out of 504 listings starting at $7,999. least once every 12 hours or so the battery goes dead. just a couple of ideas, [SIGPIC][/SIGPIC]11' Silverado CCSB Z71/18x9 DC-2/3" Daystar leveling kit/Flowmaster Super 40/5% Tint. This could keep your vehicle from starting next time. definitely fail the test. Performance of the truck doesn't seem to be hurt in any way however the voltage gauge doesn't stay super consistent while driving. The ground by the passenger side cylinder head is also tight. Holds there for a while, then drops again and holds there. My Tahoe only goes on short 20 min trips to and from work, so I am assuming its not getting a long enough run to charge up the battery. Rely on a scan of trouble codes before acting on any charging system tests. I will Disclaimer: Links on this page pointing It helps to turn mechanical energy from the crankshaft into electrical power. Charging System Analyzer Procedure Park the Chevrolet on level ground. alternater and all passed. The battery light may be displayed anywhere between 10 seconds to 30 minutes. The BCM will command charge mode for 2-3 minutes and then determine which mode to enter depending on voltage requirements, In addition to all these charging modes, the old ALT/BAT light has been changed to Service Battery Charging System. The indicator will illuminate under these conditions: The ECM detects generator output is less than 11 volts or greater than 16. 1. Service batteries are used to provide power to certain electrical devices in a business or organization. You could have an intermittent short at the starter motor solenoid, which would ground the positive starter motor wire and heat the battery terminal as the battery drains very fast. If the battery is weak, it will It may not display this or other websites correctly. Thanks in advance. Heres the explanation for each mode. They hooked up a machine to the "service Charging System Soon" Question.. 2011 Tahoe LTZ battery goes dead because of intermittent draw on battery. CarComplaints.com: . I'm going to get the alternator tested soon hopefully and dive in deeper if need be. FlexOffers, Cool Automotive Products and Tool Recommendations, Read AUTO REPAIR ARTICLES sorted by topic, What is electronic brake force distribution (EBD), Reduced engine power message on Buick Encore,Chevrolet Trailblazer, Custom Wordpress Website created by Wizzy Wig Web Design, Minneapolis MN. Once again, this is a on/off pulsed signal and the ECM communicates performance back to the BCM. JavaScript is disabled. That saves a lot of time because you dont have to refer back to the component locator or circuit locations. 2023 CarGurus, Inc., All Rights Reserved. But this time it only lasted it before at 30 seconds before the message went away. Here are a few things to fix your charging system warning light: A. This type of charging system is more common in electric vehicles and is used to determine how much power to send to the battery. Also, terminal corrosions can reduce the conductivity, resulting in low charge situations. Faulty Alternator With the following step, you can conduct a proper check and service on your vehicles battery charging system yourself, irrespective of the car model. As with all other warning lights, your first step is to pull the trouble codes using a scan tool. The high speed cooling fan, rear defogger and HVAC high speed blower is activated Battery temperature is less than 0C (32F). Most battery places can test battery and charging system. The GM Electrical Power Management (EPM) is designed to: 1) Maintain battery charge above minimum levels, 2) Lower fuel consumption when electrical generation isnt really needed, 3) Get the longest life out of the battery to reduce unnecessary replacement. So when it comes up with a service battery or service charging system message, it gives you some pretty good information on whats wrong. This is beneficial for the battery as it will not be subjected to sudden spikes in voltage and can potentially last longer with a more even charge. This includes wires, fusible links, etc. It could be a result of a faulty alternator that leads to a parasitic drain on the battery, or that the battery needs replacement as it is old. A few weeks ago my battery light started coming on intermittently while driving. When it reads under that, it means the battery is defective. If you click them and make a purchase, we . Set on volts DC, you should have 13.5-14.5 volts. it looked fine. I had just driven 30 miles to work with no issues, nothing out of the ordinary. 2008 CHEVY TAHOE BATTERY DRAIN, THE PAST 8 MONTHS. Should I replace the diode trio or just put a new alternator on? If you want to drive with the battery light on, it should for a short period.