Shuddering/Grinding Noise Only When Turning Off Engine and Throttle-Oil Pressure - SOLVED. If your battery is low or bad, it could also cause your service battery charging system indicator to come on. New battery. As said, it might occur for several reasons; it could be a problem of low voltage battery, alternator, battery connections, broken wire, and others. With your Tahoe turned off, you'll connect the negative side of the meter to the negative battery post or wire. Virtually all AutoZone within the USA can check your alternator, starter, or when your battery is not charging. Click to reveal If the battery is not dead, then you can inspect the battery connections and the alternator. Position your tester towards the OFF area. For example, if the device uses a power cord, the cord may need to be re-configured to allow the device to use the service battery. The climate control unit requests increased idle speed due to A/C or Defrost activation in an acceptable temperature window. How long the pulses stay in either ON or OFF position is referred to as pulse-width-modulation, or duty cycle. california native "REPUBLICAN" high desert. Thread starter ToddEdge; Start date Aug 22, 2013; Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. With the engine off, you should get a reading somewhere between 12.0 volts and 12.6 volts. Corroded Wires & Connections are another reason why the service battery charging system indicator comes on. Vehicle charging systems provide electrical energy to power your car as youre driving and keep the batterys charge. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. ( see pic). If the battery Come join the discussion about Silverados, Sierras, and other full size trucks performance, modifications, suspension, lift kits, tires, maintenance, and more! 2012 Chevy Tahoe LT. 1. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. They have a device that puts a lode on it for no more than 10 seconds. You must log in or register to reply here. Scott Greene is a seasoned automotive technician for over 5 years and has been deep into advanced automotive diagnostics for a couple of years. I will definitely post the answer. A friend of mine with an '09 is having the same problem. In voltage reduction mode, the ECM targets generator output voltage 13 volts. Remember to disconnect Most battery places can test battery and charging system. Jun 18, 2016. Ensure there is a greater output in the alternator output as the car engine runs at 2000 RPM. Many modern GM made vehicles have a battery saver feature, this includes the Chevy Suburban. General Tahoe/Yukon/Escalade Discussion Forum, WTB and Help Needed: Instrument Cluster for 2007 Tahoe LTZ. . 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). The only thing left before the engine is silenced might be just a few miles. This is on a 2008 Tahoe LTZ with 125K miles. Apr 16, 2021. 1 people found this helpful. Think there is one. 1,500 RPM's. Check the voltage again. Once it knows initial SOC, it can compute battery needs based on actual current usage, generator output, battery temperature, and battery capacity. How old is your battery Ramiro? possibility of it being your voltage regulator, or alternator starting to go. about 8 months ago I upgraded the battery from the stock GM one to a bluestar 770cca battery. battery not charging? What can I check to make sure it doesn't show up again. However, the BCM will command a voltage reduction mode if the battery temperature is above 32F and the battery current is less than 1 amp but greater -7 amps. You can of course buy your own and save a bundle. I noticed that the voltage gauge read above 14 volts on the dash, drove around for 30 minutes, stayed at 14+ volts. Once in this mode, the BCM will set a targeted output voltage between 13.9-15.5 V for about 5 minutes. For a better experience, please enable JavaScript in your browser before proceeding. 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. If you click them and make a purchase, we . For a better experience, please enable JavaScript in your browser before proceeding. 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. http://www.tahoeyukonforum.com/forum/showthread.php?t=63936. Sep 21, 2019. Two suggestions that may or may not solve your problem, but I think theyre good suggestions nonetheless: 08 denali xl 6.2 had a similar problem but when the "service bat charge sys" and "red light" illuminated the volt gauge was stable and low. the alternator. The battery current sensor converts current measurements into a pulsed 5-volt signal to the BCM. Position the current probe towards the alternator B+ output lead. The charging voltage is set to 14.3 volts for 30 seconds. Should I disconnect the battery of my Tahoe 2015? The BCM indicates there is a system voltage range concern. If that turns out ok then hook up a millimeter to the battery while the car is running. be taking it in first thing in the There are a few different ways to fix service battery charging. Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. on the Information Center has started to pop up more frequently now. The Chevy service battery charging system is a series of electrical components that allow a Chevrolet service battery to be charged. Besides the warning my headlights, dash lights and interior lights flicker. They hooked up a machine to the A charged battery on a Chevrolet service battery charging system indicates that the battery is in good condition and is ready for use. today the "service battery charging system" message come on. Here are a couple links that you may find helpful: 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. With a starting price of around $50,500, it was nearly $15,000 more . Please include what you were doing when this page came up and the Cloudflare Ray ID found at the bottom of this page. It's been almost 2 weeks since we took to the dealer. Pricing: ---Eautorepair.net--- 1 month subscription $19.99 per vehicle 1-year subscription $39.99 per vehicle 4-year subscription $59.99 per vehicle ---Alldatadiy.com--- 1-month subscription $19.99 per vehicle 1-year subscription $29.99 per vehicle 3-year subscription $129.99 Which one should YOU choose? Swapping Yukon XL Captain chairs with Seat Rails from 03 Escalade. Mine popped up the other day on my 08 but I kinda drained the battery with the tunes cranked. The Chevrolet service battery charging system monitors and charges the service battery when the car is not in use. One of the biggest hindrances to the Chevy Tahoe Hybrid's success was simply timing. Update: had the battery and alternator tested at autozone and both passed. a test signal to the alternator (2 wires) show it would stop sending signal to the alternator to turn on. In modern vehicles, the battery charging system is comprised of the alternator, the battery, and the electronic control unit (ECU). morning. Set your multimeter to 20volts direct current (DC) and start the vehicle. Additionally, if the battery is not charging properly, the device may not be able to access power from the battery. This type of charging system is more common in electric vehicles and is used to determine how much power to send to the battery. least once every 12 hours or so the battery goes dead. This article will provide you with all the information you need to know about the service battery charging system light, what it means, what causes it, and how to fix the underlying issues. on who you talk to someone will call it well. "service Charging System Soon" Question.. 2011 Tahoe LTZ battery goes dead because of intermittent draw on battery. If they move even a little bit, that could cause an issue. If you test the charging system while it is in Fuel Economy Mode using traditional charging system methods, you will falsely determine that the generator is defective. Should I replace the diode trio or just put a new alternator on? 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. it to auto zone. Most times, service charging battery system messages are caused by a malfunctioning ECU. 6L80 Transmission Life Expectancy [All You Need To Know], Will a Bad Fuel Injector Throw A Code [Explained]. Message On My 2007 Tahoe 'Service Battery Charging System' - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. I monitored closely thereafter, 10 to 20 minutes later voltage climbs back to normal. 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. Get the BEST auto repair information Alldatadiy.com and Eautorepair.net are professional-grade shop manualsperiod. This means that the battery is not constantly being topped off and will slowly discharge while the charger is working to recharge the battery. Mar 2, 2012. > Tahoe & Suburban Oct 25, 2009 - The Service Battery Charging System message keeps comming on in . If the battery light comes with a temperature light, you should avoid any activity with the vehicle. Voltage is regulated between 13.9-14.5 volts. If the voltage is low or the current is high, the battery may not be charging properly. Additionally, the device may need to be re-configured to use the battery. These trucks have a smart charging system and will provide only the charge required under the current load condition. Battery is probably nearing EOL. Investigating more closely and doing a battery voltage test will clarify whether the starting problem is due to the battery. A cyclic charging system charges based on the amount of power being drawn, rather than maintaining a set voltage. A few weeks ago my battery light started coming on intermittently while driving. Swapping Yukon XL Captain chairs with Seat Rails from 03 Escalade. Tomorrow I just Set the parking brakes and turn off the ignition. the battery as been change, the alternator has been change. Join both parts to the positive battery post. Replaced You'll then touch the positive side of the voltmeter to the positive battery wire. You can test it through the following steps; Inspect your vehicles alternator to make sure that it is working properly. 2004 chevy tahoe battery not charging light is on here is how i solve my battery/charging issues: 1. as preventative maint. Ignoring the service battery charging system warning or battery signal light is dangerous. But this time it only lasted it before at 30 seconds before the message went away. I forgot to mention that when i get jummped off everything runs fine. It can also be used to command the alternator to change its output levels for testing purposes. If that turns out ok then hook up a millimeter to the battery while the car is running. Therefore, youve to employ the services of an experienced mechanic for inspection and servicing. A charged battery is also more likely to provide a longer battery life because it is more resistant to being discharged. If your charging system fails, the most common sign is loss of power. If the battery is weak, it will Also Read: Car Stutters When Starting (How To Fix). I thought it was the battery, so i took it to autzone, were they told me it was no longer a good battery. If the service battery charging system indicator is on and the alternator or battery is not faulty, the likely cause is a faulty computer system. The light indicator usually shows you that the battery is no longer working or the alternator has ceased functioning. The The 2012 Chevrolet Colorado is the perfect size pickup for running errands on the weekend and doing light duty chores around . Then follow the diagnostic routine for that code. chevroletforum.com > . Battery sulfation mode is used to help maintain the battery life. The charging system may have failed or been damaged by road debris. Seems to be a very common problem testing has been done between the battery and alternator and is good. I am travelling for one month. '11 LTZ, born Aug 2010, Fairfax, KS. Here are a few things to fix your charging system warning light: A. goodness. Read full answer. take it to the mac. So an EPMs first job is to monitor the condition of the battery and select a charging routine that matches it condition. Faulty Alternator VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. I just bought a 2014 Chevy Cruze with 30,000 miles. There are a few different ways to fix service battery charging. [SIGPIC]http://www.gmfullsize.com/forum/image.php?type=sigpic&userid=20067&dateline=1251765707[/SIGPIC], if its an 07 on the original battery its about that time just get a new battery and be done with it. was to come, Sounds like they did the alternator test that I described. So, My 2009 Yukon Denali throws the "service battery charging system" message on a daily basis. it looked fine. You can check the voltage of the battery using a voltmeter. Do not worry, because we have the answers to your questions. The alternator produces an electrical current to operate accessories and charge up the battery. That saves a lot of time because you dont have to refer back to the component locator or circuit locations. Set the Battery Tester to its ammeter function. Heres an example of the correlation between duty cycle and voltage output, 10% 11 V 20% 11.56 V 30% 12.12 V 40% 12.68 V 50% 13.25 V 60% 13.81 V 70% 14.37 V 80% 14.94 V 90% 15.5 V. In addition to controlling how much power the generator puts out, the EPM is executes several program modes. The charging system includes a battery charger, a ground cable, and a power supply. What is the problem with getting aftermarket battery? Therefore, you should take it to your mechanic, who can check the alternator voltage. If it reads up to 9.6 volts at 21C, it means the battery has good capacity. . farynhite; Feb 27, 2017; General Tahoe/Yukon Discussion Forum; Replies 1 Views 6K. To gain sufficient time, you can turn off all the electrical accessories that are not being used at that time, like the air conditioner, the heater, the radio, and so on. Make sure the battery is 100% fully charged. The only way to determine if the system is in Fuel Economy Mode (besides observing the criteria), is to view the current mode on a scan tool. Weak Battery. Shuddering/Grinding Noise Only When Turning Off Engine and Throttle-Oil Pressure - SOLVED. make a purchase, we may earn a small commission. This type of charging system is typically found in appliances such as lamps, radios, and calculators. I suggested he clean all battery connections, which he did. This website is using a security service to protect itself from online attacks. I still think a battery load test is in order. The battery light may be displayed anywhere between 10 seconds to 30 minutes. Cloudflare Ray ID: 7a2cf443ec582c01 The BCM determines system voltage is less than 11 volts or greater than 16 volts. These vehicles IMO struggle in the summer time with the huge loads from dual ac/cooling fans at idle. We took it in to the dealer and they said everything was ok. wanted to prepare my self for what Used Ford Explorer. I could go on and on about the system, it does work and i have left it intact, i also install a overdrive pulley on the alt for the summer months to compensate for the extended idleing and dual ac on max that we experience here in the ca desert. The proper test is a load test when the battery is fully charged. Sep 13, 2017. It will target generator output voltage 12.5-13.1 volts. make a purchase, we may earn a small commission. I will Erratic dash cluster behavior, T/C, Brake light, ABS light, dash lights, door & windows do not work, Constant chime, radio goes off,gauges fail. Check battery cables and cabel ends and grounds. Everything appears OK from the outside, what gives? Turns out it was the battery. Is Unleaded Gas Regular Gas? Set on volts DC, you should have 13.5-14.5 volts. Whenever your vehicle refuses to start, it is caused by a bad battery that couldn't hold a charge. Make sure battery has a full charge and connections all good. with this year and model. Next I would go to the belt, two fuses, tensioner, and check for trouble codes. 01. The Fora platform includes forum software by XenForo. If the battery isnt charging properly, it may not be able to provide the necessary power and may need to be replaced. Holds there for a while, then drops again and holds there. alternater and all passed. Now let's get down to how you can do this. A Chevy service battery charging system is responsible for maintaining the batterys charge while the car is being serviced. I have power to the Tahoe however I had a Machine at The ECM ultimately controls the field current to the generator, but bases its decisions of data from the BCM. This is on a 2008 Tahoe LTZ with 125K miles. battery twice now, so I know it's not a bad bat 486 Great Deals out of 7,051 listings starting at $2,400, 537 Great Deals out of 9,055 listings starting at $1,750, 309 Great Deals out of 4,721 listings starting at $2,990, 837 Great Deals out of 16,870 listings starting at $1,999, 3,398 Great Deals out of 107,683 listings starting at $2,500, 364 Great Deals out of 5,954 listings starting at $1,500, 604 Great Deals out of 13,615 listings starting at $2,495, 1,978 Great Deals out of 50,788 listings starting at $1,321, 808 Great Deals out of 10,852 listings starting at $4,495, 166 Great Deals out of 2,554 listings starting at $2,884, 5,101 Great Deals out of 126,716 listings starting at $2,200, 4 Great Deals out of 53 listings starting at $31,994, 10 Great Deals out of 100 listings starting at $24,900. A Tech2, the computer used by the dealerships for these trucks, can see the health of the battery and alternator. 2023 CarGurus, Inc., All Rights Reserved. Now the car wouldn't start, just as with any "dead . Road trip today I notice my voltage is low. So when it comes up with a service battery or service charging system message, it gives you some pretty good information on whats wrong. The vehicle will set a trouble code for a charging system fault. The battery was tested at the dealership and it came up good.