Jump to content

Multiple DTC Error Codes ESC, ABS, Steering, Parking Brake, ... on 2021 GMC Sierra Denali 3.0 Diesel

BDogg

By BDogg
in Troubleshooting, Warranty & Recalls

 Share

Recommended Posts

BDogg Enthusiast

BDogg

Posted
Posted

Sharing experience for your info and any ideas you might have.  My shiny new 2021 GMC Sierra Denali 3.0 Duramax Diesel with 4900 miles on it has been losing its mind.  I get multiple, rotating DIC messages: “Service ESC”, “Service Parking Brake”,  “Service ABS”, “Adaptive Cruise Control Disabled”,  “Steering Assist Reduced Drive with Care”, . . . ). The error messages come with other “benefits” besides disabled cruise control. I also enjoy no GPS signal, no Blind Spot sensors, no collision avoidance sensors, and who knows what else.   

 

Fortunately, the diagnostic codes were stored so the tech could see them, and I provided video of the DIC messages each time, too.  They are on their 4th attempt to repair it now.  First time, they replaced the Exhaust Particulate Matter Sensor (4025920) .  Second time, they tried the same thing and replaced the Exhaust Particulate Matter Sensor, again.  The 3rd time, they inspected the engine harness but found no damage so they replaced the pigtail to the  Exhaust Particulate Matter Sensor and followed an 8 hr rest cycle and road test protocol.  It worked for about 2 hours after I picked it up, then everything lit up again.   This (4th) time, they are saying they will replace the entire wiring harness per GM’s direction.   I do not want to use Florida’s Lemon Law, but I am starting the process just to be safe.

 

BTW, I’m also getting the “long-crank/no-start” issue.  They just applied the ECM update per TSB for this problem, so we’ll see if that worked when/if I get to keep the truck more than a couple hours between service appointments.

 

I was having issues with the passive locking feature where the truck locks the doors a few seconds after I get out with the key in my pocket.  It would not  work even when set to on.  Now that they did the Infotainment software update (V155) this seems to be fixed.

 

I’m still having false messages that the SD Card for the Navigation System has been removed when it has not been.  GM has a bulletin out so they know about this issue, but it appears there is no fix action on this one yet.

 

After looking up each code listed on the repair orders (RO’s), I believe the main harness is a very likely cause of all the DIC error messages and system failures.  Otherwise, all those modules and sensors involved have gone bad simultaneously.  I suppose a power surge of some kind could do that, but then it seems the modules would not work fine in the short time between repairs.

 

Here are the codes the tech reported on the last two Repair Orders (bold codes where noted on both RO’s):

 

2/5/22:

B1A01

Speaker 1 General Electric Failure

B395B

Side View Camera Left

P1488

Particulate Matter Sensor Protection Tube Performance

U0020

Low Speed CAN Bus

U0022

Low Speed CAN Communication Bus (+) Low

U0077

Control Module Communication Chassis Expansion CAN Bus

U0121

Lost Communication with Electronic Brake Control Module

U0151

Lost Communication with Inflatable Restraint Sensing and Diagnostic Module

U0155

Lost Communication with Instrument Panel Cluster Control Module

U0184

Lost Communication with Radio Unit

U0415

Invalid Data Received From Electronic Brake Control Module

U0422

Invalid Data Received From Anti-Lock Brake System Control Module

 

2/10/22:

B0967

Parking Aid On/Off Switch Circuit Short to Ground

B1AO1

Speaker 1 General Electric Failure

P1488

Particulate Matter Sensor Protection Tube Performance

U0077

Control Module Communication Chassis Expansion CAN Bus

U0121

Lost Communication with Electronic Brake Control Module

U0131

Lost Communication with Power Steering Control Module

U0151

Lost Communication with Inflatable Restraint Sensing and Diagnostic Module

U0184

Lost Communication with Radio Unit

U0415

Invalid Data Received From Electronic Brake Control Module

U0421

Invalid Data Received From Suspension Control Module

U0422

Invalid Data Received From Anti-Lock Brake System Control Module

 

gemarsh Senior Enthusiast

gemarsh

Posted
Posted

Has anyone checked the grounds? How about the underhood fuse box bolts?

 

 

 

 

 

 

gemarsh Senior Enthusiast

gemarsh

Posted
Posted

With those dic errors, why did service start with the soot sensor??? Thinking it was grounding out can bus?

 

 

 

 

 

 

 

 

 

 

thekcwolf Enthusiast

thekcwolf

Posted
Posted (edited)

Holy Cow.... That's a lot of errors !!   Did you take delivery before the microchip shortage thing began? I'm wondering if the "newly processed" chips were  manufactured poorly. When was your build date? (I've been asking that a lot).

Edited by thekcwolf
Added content
BDogg Enthusiast

BDogg

Posted
  • Author
Posted

I couldn’t say if the tech checked the fuse box bolts, but I’ll ask.  The first time this issue was addressed, it was a simple CEL.  They did the first exhaust particulate matter sensor replacement then.  I don’t know why they did the same exact thing the second time and expected a different result.   It is really looking like a damaged, or likely an improperly installed and then damaged, wiring harness to me when I study those DTCs.  

 

I took delivery in June 2021 having waited for the truck to finish its cruise from the assembly plant in Mexico to the port here in Jacksonville, FL.  I don’t know how long it sat there after assembly before being loaded on the ship.

  • 1 month later...
BDogg Enthusiast

BDogg

Posted
  • Author
Posted

Update:  I still do not have my truck back.  The service advisor reports the grounding, fuse box bolts, etc. were all verified per GM specs.  They also replaced another wiring pigtail, but the issue persisted.  At least this time it didn't wait until I picked it up to go haywire again. Action has been on hold since late last week awaiting the GM engineer to travel from Atlanta.  

 

Yesterday, the GM engineer was on site to make a last ditch effort to fix the truck.  He believes he found two bad components attached to/associated with the body control module. (The advisor tells me these tests are beyond normal dealer service department troubleshooting.)  The body control module passed the tests, but 2 of the 4 "terminals" are showing bad voltage levels if I understood the advisor correctly.  They ordered the 2 terminals for overnight delivery and are installing today.  They say the GM engineer usually departs once he completes the diagnosis, but this time they are making him come in this afternoon to certify the repair as GM approved and fixed.  If the repair does not work, the dealer says they will engage with GM on my behalf to do a buy back and get me into a new, new truck.

 

I've owned this truck for 9 months.  In that brief time, the truck has been in the shop for 6 full weeks so far.  Not the "professional grade" experience I expect from GMC.  Sad.

  • 4 weeks later...
BDogg Enthusiast

BDogg

Posted
  • Author
Posted

I'm on the road again!  The GM FSE (Field Service Engineer) was in a number of times, and he determined there was a loose terminal pin on the SDM x1 connector located under the center console.  Inspection and replacement involved removing the console, seats, carpeting.  So far, all appears to be fixed. 

 

The long-crank, no-start issue MIGHT be fixed.  The software update mentioned earlier is supposed to be a fix.  So far, it hasn't happened, but it was a very intermittent problem.

 

Everything appears to be working nominally.   I'm cautiously optimistic that all is good.  

  • Like 1
  • 4 months later...
  • 5 weeks later...
BDogg Enthusiast

BDogg

Posted
  • Author
Posted
On 8/15/2022 at 12:14 AM, Jen1 said:

I’m having the same issue.  My dealership wants to replace the battery.  Are you still having issues? 

Sorry for the delayed response.  Yes, the DTC issue appears to be fixed.  The Long-Crank, No-Start problem happened again (once) since they applied the software patch that was supposed to fix it.  But, the pid in the SDM under the center console seems to have been the problem with the crazy error codes and system failures.  I hope you have already gotten resolution!

  • 1 year later...
Pat0110 New Member

Pat0110

Posted
Posted

Hi 👋🏽 I have 2021 GMC Sierra X31 and had the service engine light come and go after a week the service trailer brakes, service power steering and service ECM among other codes. But it’s intermittent. It kinda seems when I steer faster than it pops and sometimes the rear camera comes on when this happens. It doesn’t matter if I am in drive or in park. Battery is good. Today I took the 3 wire harnesses off the power steering module and put them back on, cleared the codes and then disconnected the battery for about 10-15 minutes and when I turned it on everything seemed to work. I took it down the road and back. All good. Then I tried another test drive and by the time I got back I completely lost power steering and all the other stuff came back. I would really like to fix this myself since the dealership is about 3 hours away and I need my truck. I was reading this forum and someone had mentioned the bolts that hold down the fuse box by the battery. Just wondering what that was all about? Also if anyone has any suggestions, I’d greatly appreciate it. 

gemarsh Senior Enthusiast

gemarsh

Posted
Posted
5 hours ago, Pat0110 said:

Hi 👋🏽 I have 2021 GMC Sierra X31 and had the service engine light come and go after a week the service trailer brakes, service power steering and service ECM among other codes. But it’s intermittent. It kinda seems when I steer faster than it pops and sometimes the rear camera comes on when this happens. It doesn’t matter if I am in drive or in park. Battery is good. Today I took the 3 wire harnesses off the power steering module and put them back on, cleared the codes and then disconnected the battery for about 10-15 minutes and when I turned it on everything seemed to work. I took it down the road and back. All good. Then I tried another test drive and by the time I got back I completely lost power steering and all the other stuff came back. I would really like to fix this myself since the dealership is about 3 hours away and I need my truck. I was reading this forum and someone had mentioned the bolts that hold down the fuse box by the battery. Just wondering what that was all about? Also if anyone has any suggestions, I’d greatly appreciate it. 

Also check the ground strap behind front right inner fender well.

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

    • diyer2
      Gas Prices

      By diyer2 · Posted

    • PhilB
      Gas Prices

      By PhilB · Posted

      There you go again.  Preaching your politics and worse case scenarios.  And what are you doing to make the world less polarized? 
    • asilverblazer
      VSE CCV Bypass - Anyone have this installed in their L5P?

      By asilverblazer · Posted

      Maybe.   Maybe.   I don't want to be the one that needs help and can't get it when I need it. That is a legitimate complaint, and how they respond to those legitimate complaints is a big red flag to me.   I don't care how good the product is their conduct is subpar. Some people are fine supporting that for the sake of getting the product they want. I'm not.   To be fair, I haven't seen or touched their product in person to determine for myself the quality of it. I'm not offering any opinion on that either.
    • KARNUT
      Gas Prices

      By KARNUT · Posted

      So if you do nothing and they act on their threats like death to America or Israel. And possibly a nuclear war. Whoever survives wonders why didn’t they listen? Or we do something like every President has said they can’t get a nuclear weapon. We’re at the 10 yard line and it happens the time is now or never. I think I’m ok with paying a little more for gas for awhile. It’s a shame that we now live in a world that’s so polarized. 
    • newdude
      6 Speed vs 8 Speed

      By newdude · Posted

      4-5-6 fails due to design.  Not enough clutches and not enough piston to clutch surface area.  Also the backing plate can bow.     I'd say converter is two part.  The design of converter chosen, and factory tuning of it aka slipping it in D (also L6) for AFM purposes, as well as locking it up in 2nd gear, sometimes 1st, also it will partially lock up at light loads.  All because CAFE/fuel economy requirements.  A billet converter on the stock tune might hold up better, but would still be subject to the stock tuning and how its designed to lock or partially lock.     The most baffling part to me, is the 2007-2013 6L80s didn't have the failure rate the 2014-2018 ones do.  I've been where I work for almost 17 years now, and I recall maybe 3 or 4 of the 07-13 transmissions getting pulled for something.  14-18 on the other hand, it was at a minimum one a month being opened up.    If I had to guess, I'd say the tuning for the gen 5 engines/6L80 setup and its fuel economy goals had a good bit to do with it.  Also, it was bankruptcy time during these years, so I'm thinking some cost cutting was done for the launch of the K2XX trucks.  See also now the 10 speed valve body issues (more cost cutting).  They blow out some mesh screen in the spacer plate, undersized check ball, and the feed limit valve was aluminum and wears out prematurely.         I don't think it was the HP jump from the gen 4 to gen 5?  The 6.2 in the 07-13 trucks was good for 380-400hp during its life/states of tune, and the 5.3 did 310-320hp.   

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...