Jump to content

Dead battery and check engine light

2020gmc
 Share

Recommended Posts

2020gmc Enthusiast

2020gmc

Posted
Posted (edited)

Currently have my 2020 Gmc sierra 1500 with a build date of 09/2019 at the dealer with 2kmiles on it. Battery was dead one morning. After jump starting had check engine light and brake antilock system issue sent to my email. Truck would not hold a charge after leaving it on for a good 30 min. Its been at the dealer for 3days now.

Edited by 2020gmc
Added details
  • Replies 83
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

Tomato
Tomato

Thanks for the fix!  Tripped both P0700 and U0100 today and found this.  Those 4 bolts were only at about 15 inch-pounds, and the green indicators were up.  Talked to my service rep at the dealer to c

2020gmc
2020gmc

Lol! Thanks. Must admit this is my first gm product and it takes the prize for spending some time in service so soon. Got my truck back! They put a new battery and cleared codes. Plus they took care o

Colossus
Colossus

Well she'll not be too troublesome from here on out.  Chances are, she sat for quite a bit after being built and the battery went bad. 

Posted Images

2020gmc Enthusiast

2020gmc

Posted
  • Author
Posted
3 hours ago, Colossus said:

welcome to the club

Lol! Thanks. Must admit this is my first gm product and it takes the prize for spending some time in service so soon. Got my truck back! They put a new battery and cleared codes. Plus they took care of the seat belt recall ?

  • Like 1
Colossus Senior Enthusiast

Colossus

Posted
Posted

Well she'll not be too troublesome from here on out.  Chances are, she sat for quite a bit after being built and the battery went bad. 

  • Like 1
BIGDOGx Senior Enthusiast

BIGDOGx

Posted
Posted
8 hours ago, Colossus said:

Well she'll not be too troublesome from here on out.  Chances are, she sat for quite a bit after being built and the battery went bad. 

It was built in september lol, weird because if there is one part on these trucks that i have always had good luck with are ac/delco batteries.

Drj1014 New Member

Drj1014

Posted
Posted

Mine did the same. Truck had roughly 2200 miles on it and was parked in my drive way. Woke up to no power. Had to jump start. It started right up and had every light on in the dash. Truck was in limp mode. 
 

drove it to the dealer. They blamed my power tonneau cover was draining the battery but it’s been on there since day 1 and this is the first issue. I had the same tonneau cover wired the same way on my f150 lariat for 4 years with no issues. 
 

dealer cleared the codes and said they wouldn’t charge me the labor or diagnostic fee since they stated it was the tonneau cover. 
 

so far it hasn’t done it again but I fear it will. 

2020gmc Enthusiast

2020gmc

Posted
  • Author
Posted
7 hours ago, Drj1014 said:

Mine did the same. Truck had roughly 2200 miles on it and was parked in my drive way. Woke up to no power. Had to jump start. It started right up and had every light on in the dash. Truck was in limp mode. 
 

drove it to the dealer. They blamed my power tonneau cover was draining the battery but it’s been on there since day 1 and this is the first issue. I had the same tonneau cover wired the same way on my f150 lariat for 4 years with no issues. 
 

dealer cleared the codes and said they wouldn’t charge me the labor or diagnostic fee since they stated it was the tonneau cover. 
 

so far it hasn’t done it again but I fear it will. 

My 2013 f150 used to have a mode that would prevent me from draining battery these dont. When Reading the manual i noticed it says not to leave the power outlets connected and i used to leave two chargers connected for the cell phones on the front and back they had small lights. Im sure they dont cause that much drain but now i disconnect them for fear of battery drain. Also trying to get my wife to disable autostop start when she turns it on because a battery takes the most load when cranking. Thats why it uses cca to rate them cold cranking amps

  • 3 months later...
whitesierraRT Enthusiast

whitesierraRT

Posted
Posted
On 11/26/2019 at 7:41 PM, 2020gmc said:

Lol! Thanks. Must admit this is my first gm product and it takes the prize for spending some time in service so soon. Got my truck back! They put a new battery and cleared codes. Plus they took care of the seat belt recall ?

Same thing happened to me. New battery, bla bla. P25A2 code now.

Silver Fox New Member

Silver Fox

Posted
Posted

Brand New 2020 in the shop for the same issue at 1833 miles. Tried to go to the store and it wouldn't start. Too many codes to count. Figured the battery or alternator was issue. Charged up the battery on slow charge for 2 nights, drove to Autozone. They said the battery was at 66%. Dealership said there was a problem with the computer detecting movement of some kind causing several systems to code and drain the battery.  

GMC 2018 New Member

GMC 2018

Posted
Posted
On 11/26/2019 at 10:30 AM, 2020gmc said:

Currently have my 2020 Gmc sierra 1500 with a build date of 09/2019 at the dealer with 2kmiles on it. Battery was dead one morning. After jump starting had check engine light and brake antilock system issue sent to my email. Truck would not hold a charge after leaving it on for a good 30 min. Its been at the dealer for 3days now.

wow I had the same exact thing happen to me yesterday, Traded in my 19 AT4 5.3 for a 2020 AT4 with the 6.2 and with only 2 miles on it i go to start it and it was slow to turn over. when it did the check eng light came on. I looked at vehicle diagnostics and it had a few voltage codes. so i drove around for about 30 min turned it off waited 20 min and restarted started right up and the check eng light was gone. I was a service advisor for 4 years at a chevy store and from my experience anytime you have a dead or dieing battery you will get a slew of erroneous eng codes b/c there are so many computers on these thing and they are very sensative to how much voltage they get and will fault if its not exactly right.... 

what is the dealer telling you ?

  • Like 1
Kyle's AT4 Enthusiast

Kyle's AT4

Posted
Posted

There is a brake recall on these trucks, dealer fixed mine as I picked up the truck from the lot.

Sent from my SM-G973U1 using Tapatalk

whitesierraRT Enthusiast

whitesierraRT

Posted
Posted

Saw the recall the day after I bought the truck (2/18/2020). Took it in and the next day after I took it home my battery was dead. They put a new battery in. Not able to drive it much lately with all that is going on. "Mystery" - First thing in the morning I pop the hood and battery is at 65%. I leave the hood up and 30 minutes later I check the battery and it's at 100%. What's with that? At least I don't have a dead battery. The P25A2 code is still in the system and it won't delete with my code reader. No engine lite so maybe it's ok now?

 

 

 

steve841 Enthusiast

steve841

Posted
Posted

FWIW .. the codes are only because of the bad battery ....

 

But, there's no excuse for a dead battery on a new truck. ?

Ecali48 New Member

Ecali48

Posted
Posted

After purchasing my new 2020 GMC 20 days the truck dash lit up with all kinds of codes and errors the light dimmed and the battery was dead, took in the dealership they said the battery was good just needed to be charged They didn’t replace the battery? Sounded fishy but whatever I drove it home no issues until exactly 25days later I go to open up my truck and the battery is completely dead!! Now 2 months later 2nd time in the dealer lets see what they say now!! I’m losing my cool because I had to call off work the first time now I was late to work the 2nd time. I bought a new truck for reliability but so far that’s not the case 

Colossus Senior Enthusiast

Colossus

Posted
Posted
On 3/30/2020 at 12:20 PM, steve841 said:

FWIW .. the codes are only because of the bad battery ....

 

But, there's no excuse for a dead battery on a new truck. ?

Sure there is.  Batteries go bad or have defects that occur during manufacturing that are not caught on quality control. 

If this is an AGM battery they don't like to be fully discharged and re-charged often.  Often this will happen after a truck has been manufactured and it sits in a staging lot somewhere for a few weeks (that's all it takes now a days on modern vehicles)  It SUCKS but it's a very common issue across the board, not just on GM. 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • jgaudet99
      Tire psi

      By jgaudet99 · Posted

      My truck is a ¾ ton but my placard also says 80 for the rear tires, I think I might have the upgraded suspension to the 3500 series maybe.   I put my air down to 60 and the light was still on, and there was no way I was putting over 60 psi in the rear empty and not towing because I knew the actual number Toyo gave me and I didn't wanna ruin the center of my tires!   And you actually can change it in the settings from metric or is and it will show kph or mph then when you go into your tire settings it will be either psi or kpa, but it would be nice to just change it directly on the tire psi page 
    • Grumpy Bear
      Some Assembly is Required

      By Grumpy Bear · Posted

      Common Sense Assembly   Your driveline is forgiving of the occasional mistake. It will even often forgive the random serious blunder. But it will not forgive a continuous bad habit.      What? Not everything needs to be a five thousand word essay.       
    • Grumpy Bear
      Gas Prices

      By Grumpy Bear · Posted

      We drove about 15 minute east today to visit a friend and saw a steep increase in price in the same county. About 50 cents a gallon steepper. 
    • Grumpy Bear
      Wow I'm in a pickle. (Broke down truck) and a story.

      By Grumpy Bear · Posted

      Sure about that? A degree wheel and a dial indicator would lower your degree of assurance in that statement. 😉    It why we have offset keys and dialable timing sprockets. Just say'n.... I've built a few and have never seen one "On the money". 
    • Chuck FB
      Tire psi

      By Chuck FB · Posted

      I will admit I haven't experimented much with pressure drops beyond the numbers I put in and part of that is that the numbers I used are fairly low and then found out it would trigger regardless at that 35 psi. Having said that I had tried before had changed the placard pressures and being that I have a 1 ton set to 80 on the placard for the rear I believe it triggered close to 60, the front I don't recall now for sure but thought maybe it could get close to 45 from that factory 60 placard pressure. So I never did figure out if it was a number of psi from placard pressure to the alarm or a percentage of the total placard number as some figured it was like a 25% drop from placard pressure would trigger it. So as to try and answer your question, I believe I set the placard pressure on the front to 47 or so and while I run the front tires at 40, they have dipped below that some if its colder and I haven't put "winter air" in yet and never once have had the front alarm go off. I would say that the answer your looking for is no, that if you set your placard pressure to 45, you have a certain amount of room to drop below that pressure before the alarm will go off.    The pressures you decide to run in your truck, that ends up being what makes sense to you based on what your carrying in your truck or if towing, then have to bump them back up to something that will carry the load in the rear and the fronts typically left at the same pressure. It all comes down to that chart I put the link to and using an accurate roadside scale to be your guide, both unloaded and then loaded to know your minimum safe pressures.    I just wish GM would allow a person to change the readings for the tire pressures to the English system of pounds as I have to look at that goofy metric reading that will never ever jive in my head and will go over and change it just to figure out what they are if need be and then change it back. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...