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Showing results for tags 'charging'.
Found 10 results
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I'm not sure how far ill get with this but here goes. I have a 2018 GMC Sierra 1500 5.3L C engine code non flex. Its got 20k on it when i bought it had a crappy napa battery in it but the adaptive charging system worked fine with the napa battery it would be a 14.4 volts on start up and then drop down to 12 as it should and the back up to 14 per the conditions listed in the service info well i replaced the 94r napa battery with a 94r oriellys agm battery and the voltage would inky stay at 14.4 not drop down to 12 when electrical loads are low so i hooked up the scan tool at my shop and see that according to the BCM the battery was at 67%charged (all other data was normal and in the right conditions for the charging sytem to drop down to 12 volts) but the state of charge has to be at least 80% so i tried charging the battery and state of charge on the scan tool never changed so i attributed it to the fact that i put an agm battery in the truck and the BCM didnt like this so i went and exchanged it for a non agm 94r battery and intalled it well after driving it for a bit the charging system still did not drop down to 12 volts despite low electrical load. Ill hook the scan tool back up tomorrow and see what the BCM thinks the state of charge is but has anyone else encountered this? Thanks. -
Hi! New here, first post... a question... I tow a small camping trailer with my 2017 Silverado 1500 LT 4x4. I've been under the assumption that the camper battery charges through the 7-blade connector while being towed. I'm just wondering if anyone can confirm this is happening or if I need to upgrade something to make sure. I've read a little about "low voltage / smart alternators" that may interfere with this process, just looking to understand for now. Thanks! Ernie in Southern Wisconsin -
2018 Silverado 2500 LT 1,300 miles truck during the day shows volts at 12.5. I can turn on ac full blast, radio and defroster and colts stay at 12.5 all day. When driving volts stay at 12.5 when I’m rolling and foot of gas mpg gauge goes up to 99mpg then will charge at 14volts as soon as I hit the gas bolts drop to 12.5. And night when headlights turn on truck will charge at 14 volts. First two times truck was taken to dealer they said nothing is wrong now the third time they tell me that’s not normal and change alternator and never fixed the problem still in the shop. Anyone have same issues or volts stay around 13.2-14.5 volts all day and night
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I have a '16 Sierra with the wireless charging module. I now have an iPhone 8 Plus and it does not charge on the pad but it will charge on a 2018 model (the newer module with 3 coils). Any chances of having GM replace the wireless module with the newer one?
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Slightly used Black 2016 Escalade Console lid with wireless charging module. Only used about 6 months, 6k miles. I traded the truck it was in so I took it out. Will fit 2014-up Silverado/Sierra 1500. 2015-up Silverado Sierra HD. Asking $295 plus Shipping. Located in Eastern PA. Includes Main Top Piece, Hinge, Inside cover and Wireless Charging module.
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Can anyone tell me if the iPhone x will work with the wireless charger in my 2016 2500 Sierra? How about the 2017 or 2o18 trucks?
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I have a 2002 S10 with 2.2 4-cyl. I have replaced the battery and alternator, and the new alternator will not charge the battery. What do I need to check? The cables and ground are clean, and I get the full 12 volts when not running; but get no charging output when running. -
I have a (new to me) '06 Sierra - in my work it spends a lot of time idling with little or no electrical load (parking lights only). When I first start up, and on short journeys, the battery voltage goes up to 14.5 - 15V every time, however I've noticed that when it's been idling for a while (30-40 minutes with short moves every 5 minutes or so) that voltage drops to 13-13.5V - if I shut off and restart the engine, it goes back up to 14.5V+ - and the following day it's right back up to 14.5V - 15V I'm not seeing any other electrical issues (lights stay bright, always starts well, passed the charging test at NTB) so my question is whether this is normal as the battery approaches full charge or if this is a symptom of a problem brewing? Thanks!
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Ignition - Dead - Ghost - Wont Start - Intermittent
gmchorrors posted a question in Ask the GM Technician
Nov. 11, 2014, Northeast Pennsylvania, 2005 Sierra 1500 5.3L *Work Truck w/109000 miles on odometer: After driving for about an hour, I stop at a customer's home [at about 3pm], shut truck off, take key out, get out, and close door. About 20 minutes later, I get back in, place key in ignition, and turn key. Nothing. No starter sound; no lights on dash. It's like there's no battery. So, I breathe and try, again. This time, truck starts right up, like there's nothing wrong. What the heck was that? I driveicon1.png home, park, turn truck off, and get out. At home, I take battery out and place on a charger overnight. ...................... Nov. 12, 2014: I take battery to auto parts retailer who tests it. The test reveals, the battery is good (should start truck) but, is weak (needs a charge). So, I put battery back in truck, connect the cables, get in, put key in ignition, turn key, and it starts right up, like nothing's wrong. While engine is running, I place a load tester on battery. Test reveals, battery is good and alternator is charging well. While running, I drive truck to mechanic, explain everything I know to mechanic, and leave truck. Two days later, mechanic gives truck back, and says, it started right up "Every Time", and he can't find anything wrong with it. The mechanic charged me $20.00 ....................... Nov. 15, 2014: After driving for about 45 mins, I turn truck off, take out key, and get out. About two hours later, I get back in, put key in ignition, turn key, and it's like there's no battery. I leave key in ignition and get out, walk away for about 5 mins., come back, get in, turn key, and truck starts right up, like there's nothing wrong. ...................... Nov. 22, 2014: First thing in the morning, I disconnect the trickle charger and click the Viper remote starter button [twice in a row] to start the truck. Nothing happens as if the system is dead. So, I wait a few seconds and try, again – nothing. So, I wait another few seconds and try, again. This time, the truck starts right up like there’s nothing wrong. …………………….. I can't find a TSB, Special Service Adjustment, or other such bulletins on this issue however, I've discovered other GM vehicles with such related problem(s). Read this for instance: http://www.carcomplaints.com/Chevrol...starting.shtml and, http://www.gm-trucks.com/forums/topi...is-dead-today/ * work-truck: In 2007, bought it 2nd hand from a Stroudsburg, Pa GM dealer. It had 7,800 miles on the odometer. -
Periodically my 05 Silverado flashes a red battery warning light and a "Service Charging System" warning displays. The voltage then begins to fluctuate maybe 2-3 volts over and under 14v. Lights dim and brighten. Then warnings shut off and all is back to normal. This happens at least once a day or so for about a year. Hasn't gotten worse....any idea what problem is?
