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Dead battery and check engine light

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diyer2 Senior Enthusiast

diyer2

Posted
Posted
10 minutes ago, Cpl_Punishment said:

If your 2015 Sierra was junk, why did you buy another one? With customers like you, what incentive does GM have to actually improve their products? 

If jumping brands is what you are referring to it won't help IMO. No need to be rude because he likes GM products. GM doesn't have to care due to rising sales for 10 years. 

Look here https://gmauthority.com/blog/gm/general-motors-sales-numbers/gm-truck-sales-numbers/

Combined GM Truck Sales Numbers

Sales Results - USA - Trax, Equinox, Traverse, Colorado, Silverado, Avalanche, Tahoe, Suburban, City Express, Express, LCV, Terrain, Acadia, Canyon, Sierra, Yukon, Yukon XL, Savana, Encore, Envision, Enclave, SRX, XT5, Escalade, Escalade ESV, Escalade EXT

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total
2020 168,148 168,148 168,148 135,911 135,911 135,911             912,176
2019 178,230 178,230 178,230 205,102 205,102 205,102 205,327 205,327 205,327 203,175 203,175 203,175 2,375,500
2018 160,671 171,771 230,517 201,348 201,348 201,348 184,187 184,187 184,187 214,239 214,239 214,239 2,362,281
2017 142,460 180,147 183,237 174,862 169,872 189,664 180,465 204,180 209,002 196,536 184,579 246,238 2,261,242
2016 138,122 155,863 177,458 182,435 166,646 173,012 204,366 177,359 173,745 188,505 184,529 228,452 2,150,492
2015 137,381 160,040 166,631 181,197 194,308 176,080 194,726 195,714 182,323 181,715 165,565 215,831 2,151,511
2014 97,161 127,839 146,345 148,181 165,304 163,300 166,676 171,302 145,281 145,899 148,371 188,876 1,814,535
2013 114,063 136,989 144,723 139,428 153,635 150,915 143,188 161,408 110,156 140,648 127,942 148,446 1,671,541
2012 96,983 119,795 128,473 121,058 140,938 138,547 126,123 137,552 118,399 122,751 114,702 162,582 1,527,903
2011 104,621 117,624 117,303 117,706 115,968 119,023 134,523 136,284 138,092 124,297 120,118 161,755 1,507,314
2010 80,976 74,573 107,258 104,901 124,615 113,293 115,611 106,653 106,350 120,328 107,579 156,972 1,319,109

 

 

:)

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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. 

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Brandon Boles New Member

Brandon Boles

Posted
Posted
1 hour ago, Cpl_Punishment said:

If your 2015 Sierra was junk, why did you buy another one? With customers like you, what incentive does GM have to actually improve their products? 

didn't say it was junk. I think GM has the best engineers in the business. Love the look. But little things like rubber window seals shouldn't be dry rotting after 2 years. Heated seats stopped working after 3. The quality of what they are putting into their vehicles are not as good as they should be.  Update: Got my AT4 back after 2 days in the shop. They couldn't find anything wrong with it. Reset the ECM. Seems to be working fine now. Time will tell.

Pinnacle Enthusiast

Pinnacle

Posted
Posted
5 hours ago, Cpl_Punishment said:

If your 2015 Sierra was junk, why did you buy another one? With customers like you, what incentive does GM have to actually improve their products? 

People just dont learn I've seen that working at dealerships across all brands ford is this way too, just ridiculous but that's what they do.

  • Like 1
1997SierraSLT Enthusiast

1997SierraSLT

Posted
Posted
On 7/17/2020 at 10:12 AM, Brandon Boles said:

didn't say it was junk. I think GM has the best engineers in the business. Love the look. But little things like rubber window seals shouldn't be dry rotting after 2 years. Heated seats stopped working after 3. The quality of what they are putting into their vehicles are not as good as they should be.  Update: Got my AT4 back after 2 days in the shop. They couldn't find anything wrong with it. Reset the ECM. Seems to be working fine now. Time will tell.

Best engineers in the business.  Compared to what.....Chrysler?  

  • Like 1
Colossus Senior Enthusiast

Colossus

Posted
Posted
On 7/17/2020 at 9:12 AM, Brandon Boles said:

didn't say it was junk. I think GM has the best engineers in the business.

Actually I think they may have some very poor engineers right now.  They need to tap into some Honda and Crapota engineers and get the longevity and reliability aspects improved, and perhaps tap into Chrysler engineers to improve the looks, because the 2019+ Silverado looks like total ******. 

  • 4 weeks later...
Tomato Enthusiast

Tomato

Posted
Posted
On 7/14/2020 at 11:55 AM, NHM25 said:

Hey guys, reposting from another thread:

 

7/6/20: I may have everyone beat on my timeline to frustration. Just purchased new 2020 GMC AT4 from Van GMC Buick in Scottsdale 3 DAYS AGO! The assembly date is June 20, 2020! It ran great the first two days... day 3, won't start. Total of 170 miles on the truck. Same issues that everyone has noted. Came outside, tried to open her up with the key fob and the battery was completely dead. Had to open manually. Push start did not function, no power whatsoever... basically a $65k brick in my driveway.

 

Connected battery to wife's Explorer and got the dash to light up but it wouldn't start. Tons of error messages. Kept trying to start it and it finally lights up... but was running very rough with knocking. This morning, started it up and it ran great. Dropped it off at dealer and they tell me there are no codes, it's running fine, the alternator and the battery look good. So I send them the videos below and a link to this thread... No word yet but will keep you all posted. So incredibly frustrating. Love the truck but now have to worry about this... what happens if it doesn't start when my family and I are in the middle of the woods camping/hunting? Ridiculous. 2020 could not get any worse. 

7/8/20: UPDATE: Dealer thinks they found the problem: Loose UBEC Bolts. There was a recent bulletin posted on 6/26/20 about this that may be the cause for this issue as a whole. Ask for document ID 5628169 or the following title for the GM bulletin: #PIT5756: Various Electrical Concerns (Inspect UBEC Bolts for Being Loose) - (June 26, 2020). SEE ATTACHED

 

Condition: Some customers may comment on any number of electrical related symptoms. The following are some of the known reported ones:

  • no crank
  • no start
  • starter grinds or re-engages after engine starts
  • SES MIL
  • IPC guages sweep/fluctute and/or various IPC warning lights or messages
  • High or low system voltage
  • May have any of the following DTC's: B1325, B2750, B305D, B297B, C0049, P0562, P0700, U0100, U0101, U0102, U3006
  • some of these concerns may be noticed with powertrain movement, like when accelerating or braking. 

 

Cause: These concerns could be caused by the X50A underhood fuse box bolts being loose. The X50A has built in indicators which pop up as the X50A bolts are tightened down, to inidcate the X50A is fully installed. In some cases, even if these green indicators are popped up, the bolts may still be loose. 

 

Correction: Inspect the X50A Underhood Fuse Block bolts and verify they are properly torqued to 53 lb in (6Nm)

 

Dealer stated that my box was indeed loose (that's what she said). Has not been able to replicate issues. Really hoping this is the fix for my truck and all of yours. Will update forum either way. Best of luck. 

 

UPDATE: 7/14/20. I have had no issues with the truck so far. I start and drive it every day. I really hope this was the simple fix; hopefully you guys give it a try and it works. You can do this fix yourself. I've attached the bulletin for everyone here. Good luck. 

BUELLTIN (1).pdf 1.02 MB · 36 downloads

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 cover my arse and not void anything.  Tightened them to 53 and the CEL was off at the next start!!!

  • Like 2
bamorris2 Enthusiast

bamorris2

Posted
Posted

Thanks for posting the bulletin about those bolts in the fuse block. I checked mine and all four were loose. It took each of them about 3/4 of a turn to get them to the spec of 53 inch/lbs. I’ve been having some intermittent electrical gremlins and CEL codes, so we’ll see if this helps.

  • Like 1
  • 2 weeks later...
NHM25 Enthusiast

NHM25

Posted
Posted
On 8/11/2020 at 4:16 PM, Tomato said:

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 cover my arse and not void anything.  Tightened them to 53 and the CEL was off at the next start!!!

Good to hear. Hopefully this worked. I will say, I have not had a single issue with the truck since the dealer tightened the bolts. Went on a few big trips, camping, etc. It's running like a champ. 

Tomato Enthusiast

Tomato

Posted
Posted
1 hour ago, NHM25 said:

Good to hear. Hopefully this worked. I will say, I have not had a single issue with the truck since the dealer tightened the bolts. Went on a few big trips, camping, etc. It's running like a champ. 

Same here - no issues since.  I haven't towed since the fix, but I am hoping this cures the trailering app gremlins I was encountering.

453030 Enthusiast

453030

Posted
Posted

My turn with this issue today.  Went to start this morning, completely dead.  No dome lights, no attempt to turn over.  Tried jumping off a small car and no dice.  Called roadside assist, they got it going after a few attempts.  Took to dealer, they did the slow charge test on the battery, says it is in amazing condition and had no idea what could have drained it.  Came to this thread, opened the hood and each bolt took several turns to tighten.  If you own this truck, check your fuse box bolts to preempt the issue.  Glad this did not happen to me camping.  8500 miles, BTW, and first issue.

  • Like 1
Colossus Senior Enthusiast

Colossus

Posted
Posted
52 minutes ago, JohnTz said:

Guys is there a video or write up on this? Is this the big fuse block under the hood? 

No, No, and Yes. 

JohnTz Enthusiast

JohnTz

Posted
Posted

Just checked mine. About 1 turn each bolt to tighten. Never had any problems but wanted to be proactive on this. Thanks for the heads up. 

  • Like 1

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