2019 GMC Yukon NO Trans Gears, NO Tachometer, NO Oil Pressure, NO Power Steering SECOND TIME!

[BlaineBug]

Typing this finally after getting home this evening after dealing with terrible service from GMC's roadside assistance. Had a cancellation from the first tow company, although it turns out that it was most likely a glitch, as the second tow company called me after the "reassigned" tow company had delivered the vehicle to the dealership.

All that aside, I really had a strange issue this evening. I have owned my 2019 GMC Yukon SLT for about one month now, currently has approximately 34,900 miles. Drove to a destination this evening where the vehicle was parked for approximately 45 minutes. Upon getting back in and started the engine, I noticed that my gauge cluster was totally black. Similar to how it looks if you use the remote start, but I did not, as I had used the start button on the dash. So, I pressed the start button a second time, and the dash cluster, infotainment system, and HVAC system illuminated. However, immediately, I received a warning on the dash indicating that "steering assist is reduced, drive with care." I did NOT have any power steering. I also noticed that my headlights were not on, even though auto lamps was enabled. I could turn the headlights on MANUALLY, but the auto lamps was not turning them on. Additionally, the heated seats would not work. AND WORST OF ALL, when I shifted into either DRIVE or REVERSE, I got NOTHING. The vehicle would just roll as if it was in neutral!

I tried restarting a couple of times and the same outcome resulted.

So, to recap, what did I notice didn't work?

1) After engine started, the dash cluster, infotainment system, and HVAC controls were dark until start button was pressed a SECOND time.
2) Tachometer reads ZERO.
3) Oil pressure reads ZERO.
4) Coolant temperature reads incorrectly.
5) No power steering.
6) Traction control light on.
7) No forward or reverse transmission gears.
8) No automatic headlights, but can be turned on manually.
9) No heated seats.

These were the issues that I NOTICED did not work. THERE MAY HAVE BEEN MORE! I can't say for certain as I was fairly flustered and focused on not being able to leave my parking spot.

Upon returning to the vehicle about two hours later to meet the towing company, I restarted the vehicle just for the heck of it. And all of the problems were gone! Totally drive-able. Nonetheless, I had it towed to the dealer. THERE IS NO CHECK ENGINE LIGHT, either!

Is anyone aware of anything remotely like these symptoms in any other case? I recorded a video and will be including the link shortly!

VIDEO OF THE PROBLEM:

 

[wjburken]

Typing this finally after getting home this evening after dealing with terrible service from GMC's roadside assistance. Had a cancellation from the first tow company, although it turns out that it was most likely a glitch, as the second tow company called me after the "reassigned" tow company had delivered the vehicle to the dealership.

All that aside, I really had a strange issue this evening. I have owned my 2019 GMC Yukon SLT for about one month now, currently has approximately 34,900 miles. Drove to a destination this evening where the vehicle was parked for approximately 45 minutes. Upon getting back in and started the engine, I noticed that my gauge cluster was totally black. Similar to how it looks if you use the remote start, but I did not, as I had used the start button on the dash. So, I pressed the start button a second time, and the dash cluster, infotainment system, and HVAC system illuminated. However, immediately, I received a warning on the dash indicating that "steering assist is reduced, drive with care." I did NOT have any power steering. I also noticed that my headlights were not on, even though auto lamps was enabled. I could turn the headlights on MANUALLY, but the auto lamps was not turning them on. Additionally, the heated seats would not work. AND WORST OF ALL, when I shifted into either DRIVE or REVERSE, I got NOTHING. The vehicle would just roll as if it was in neutral!

I tried restarting a couple of times and the same outcome resulted.

So, to recap, what did I notice didn't work?

1) After engine started, the dash cluster, infotainment system, and HVAC controls were dark until start button was pressed a SECOND time.
2) Tachometer read ZERO.
3) Oil pressure read ZERO.
4) No power steering.
5) Traction control light on.
6) No forward or reverse transmission gears.
7) No automatic headlights.
8) No heated seats.

These were the issues that I NOTICED did not work. THERE MAY HAVE BEEN MORE! I can't say for certain as I was fairly flustered and focused on not being able to leave my parking spot.

Upon returning to the vehicle about two hours later to meet the towing company, I restarted the vehicle just for the heck of it. And all of the problems were gone! Totally drive-able. Nonetheless, I had it towed to the dealer. THERE IS NO CHECK ENGINE LIGHT, either!

Is anyone aware of anything remotely like these symptoms in any other case? I recorded a video and will be including the link shortly!

View attachment 238476

Wow! Just Wow!

 

[BlaineBug]

Wow! Just Wow!

Add this to the list of replacing that rain sensor on the windshield.......you know, while they're at it.

 

[BG1988]

lemon it right away... it sounds like a future of problems battery might be dead all ready the controller modules are funky when it's below 11volts

 

[BlaineBug]

I bought it used last month from CarMax on December 11th. I am not sure of the LEMON process but would it qualify at over one years old and nearly 35,000 miles? Build date was September of 2018. I believe the dealership has to be able to at least remedy the problem, no?

I have not checked the battery's load performance but the starter has never sounded weak any time it has been started.

Like I said I had it towed to the dealership so it is documented. Problems never "fix" themselves. It is still under bumper-to-bumper warranty, which expires at 36,009 miles.

 

[wjburken]

lemon it right away... it sounds like a future of problems battery might be dead all ready the controller modules are funky when it's below 11volts

He bought it used. Most lemon laws only cover new vehicle purchases.

 

[BG1988]

He bought it used. Most lemon laws only cover new vehicle purchases.

it applies to ones under warranty. he still has some left (36k) depending on the state.. i would get a print out of it from the dealer and see what work has been done

 

[BlaineBug]

I asked about a service history the first time I came in for the recall, and they said there wasn't anything. This wasn't the dealer I bought it from, as I bought it from Carmax and this is my local GMC dealer. I feel somewhat bad to use them for their services but it is what it is and they do get repaid by General Motors for warranty work so what else can I do.

 

[BlaineBug]

Video uploaded.

 

[tom3]

I'd read that contract with CarMax real quick. See if there's any recourse for you in the sale. 30 day return policy? This problem is probably why the machine was at Carmax instead of a new car dealer. Sometimes these intermittent failures are near impossible to diagnose. Keep us posted, real odd situiation.

 

[Bob2C]

My guess would be a weak/failing battery or battery cables. I have seen batteries even though strong enough to start the vehicle wreck havoc on electrical systems. These systems are very sensitive to electrical fluctuations.


Sent from my iPhone using Tapatalk

 

[Doubeleive]

def sounds electrical, I would have the battery and battery cables replaced.

 

[swathdiver]

My thoughts exactly, battery.

 

[hcvone]

I have not had any issues, but I know an owner with a 19' tahoe that was driving down the road and all systems started shutting down, got towed, nother loose and no faults were found, then it happened 3 days later in his driveway, he replaced the battery because the dealer said it was "fine" he did it on his own, problem has not come back

 

[BlaineBug]

We'll see what they say but now that everything was back to "normal" pre and post tow, I don't have much confidence in dealership diagnostics. I have also never been in a vehicle that had as wonky as a response to a partially failing battery, if that is really the case.

Throughout my lifetime, if a battery was weak, you'd know about it and wouldn't be able to start the vehicle. Not be able to start the vehicle but not shift in to a gear of motion!

It has also not been all that cold, yet, but was colder a few weeks ago when I bought the vehicle. I would have expected a questionable battery to show it's ugly face in temperature extremes. Last evening it was above freezing I believe.

If you haven't already, be sure to check out the video. It's "hidden" so only people with the link can view it, as it's not publicly visible on youtube.

 

[Doubeleive]

We'll see what they say but now that everything was back to "normal" pre and post tow, I don't have much confidence in dealership diagnostics. I have also never been in a vehicle that had as wonky as a response to a partially failing battery, if that is really the case.

Throughout my lifetime, if a battery was weak, you'd know about it and wouldn't be able to start the vehicle. Not be able to start the vehicle but not shift in to a gear of motion!

It has also not been all that cold, yet, but was colder a few weeks ago when I bought the vehicle. I would have expected a questionable battery to show it's ugly face in temperature extremes. Last evening it was above freezing I believe.

If you haven't already, be sure to check out the video. It's "hidden" so only people with the link can view it, as it's not publicly visible on youtube.

there has been a lot of reports of very similar issue's on these newer trucks and it's always the battery and or the cables, there is a tsb on it. These trucks have a historical issue with power problems going back almost 20 years now

 

[BlaineBug]

I have read the Silverado complaints about the ground on the dash being pinched under insulation, but that seems like it was a ~2014 issue during manufacture. Normally that seems to result in the steering jumping out of one's hand, though, nothing with the gauges or transmission.

 

[BlaineBug]

To keep everyone in the loop here, I also cross-posted this issue in another GM forum. So far I have run across two owners with identical problems. One with a 2019 Suburban with 33,000 miles, and another with a 2019 Yukon Denali with 5,700 miles.

The Suburban owner has been experiencing this issue since October, and their dealership was unable to find anything wrong. The Yukon owner has an appointment next week.

In all cases, eventually everything returns to normal and driving can be continued as normal. Obviously this is an intermittent issue, and is certainly not a one-time-only problem and affects more owners than just myself!

How do we get GM involved? It doesn't sound like there is anything "on the books" regarding this particular issue. But seems potentially TSB worthy once a "cure" is found.

 

[tom3]

I wonder if this might be caused by the voltage control in the charging system. I notice on our '19 that sometimes on an extended drive the voltage will drop to just above 12 volts. Everything works fine and the voltage goes back to 14 or so eventually and I guess it's supposed to do this.

 

[BG1988]

I'd read that contract with CarMax real quick. See if there's any recourse for you in the sale. 30 day return policy? This problem is probably why the machine was at Carmax instead of a new car dealer. Sometimes these intermittent failures are near impossible to diagnose. Keep us posted, real odd situiation.

battery related the Electrical Power steering REQUIRES a ton of power to run them

there was a recall awhile back software update not sure if it applies to the '19 though
they lowered the amount of power assist as it was pulling too much current in the wires

It's 60amp MEGA fuse (12volt)


I would check the fuse as well
Report it to the NHTSA as well


on the GMT900* the Electrical power steering is on 48 volts it still worked even though my 12v battery totally cut off mid drive :O

*select models