GMC Yukon XL Engine and Dash Lights
lexington1
Member Posts: 6
in GMC
Dash lights,
Traction control off.
Stabilitrack off.
Service Traction Control.
Service Stabilitrack.
Flashing Engine Light.
Solid Engine Light.
Happens in that sequence every time.
Bought this used GMC Yukon XL truck a half year ago, everything was fine until we took long trips. I am in the North Bay, California. We took a trip to Oregon and one to Vegas. Now even 2 or 3 hour trips the same sequence happens.
First the Stabilitrack and Traction control lights then the service Stabilitrack and service Traction control, then flashing engine light, then solid engine light.
Truck still runs fine, temp is good, battery is good, oil good, handling good....
The dealership laughs at me, they said they looked at it and saw no problems; they said they had fixed it and it was not an issue. I went back out a 1000+ trip and the same lights pop up again.
I have my own mechanic look at it and he put on a “flight recorder" because the diagnostic machines /computers didn’t catch the codes.
Yet the flight recorder didn’t help much.
Also the cylinders are logging misfires, 100,000 misfires on first 2 cylinders up to 800,000 misfires on the last. Yet I am being told they dont actually misfire.
How do I stop the above described dash light sequence? (Solid Engine Light)
Any Help or Ideas are greatly appreciated. My wife drives this car and I want to assure her safety and reliability.
Traction control off.
Stabilitrack off.
Service Traction Control.
Service Stabilitrack.
Flashing Engine Light.
Solid Engine Light.
Happens in that sequence every time.
Bought this used GMC Yukon XL truck a half year ago, everything was fine until we took long trips. I am in the North Bay, California. We took a trip to Oregon and one to Vegas. Now even 2 or 3 hour trips the same sequence happens.
First the Stabilitrack and Traction control lights then the service Stabilitrack and service Traction control, then flashing engine light, then solid engine light.
Truck still runs fine, temp is good, battery is good, oil good, handling good....
The dealership laughs at me, they said they looked at it and saw no problems; they said they had fixed it and it was not an issue. I went back out a 1000+ trip and the same lights pop up again.
I have my own mechanic look at it and he put on a “flight recorder" because the diagnostic machines /computers didn’t catch the codes.
Yet the flight recorder didn’t help much.
Also the cylinders are logging misfires, 100,000 misfires on first 2 cylinders up to 800,000 misfires on the last. Yet I am being told they dont actually misfire.
How do I stop the above described dash light sequence? (Solid Engine Light)
Any Help or Ideas are greatly appreciated. My wife drives this car and I want to assure her safety and reliability.
0
Comments
Problem is that when the computer read the misfires, it shuts down the Stabilitrack and the Traction control because it thinks if the engine is misfiring, something is wrong and thus shutting off the computer controlled Stabilitrack and Traction control,
Yet when we go to check the cylinders that are "misfiring" they are not misfiring at all, rather they are throwing false codes, but the car or computer dose not understand.
Best thing to do, is bring the car into a certified GMC dealer, yet the solid engine light has to be on.
For instance, I drove 400+ miles this last weekend and all the symptom’s that I discussed in the first post happened again, the engine light has been on for 3 days now, so I brought it into the dealer, with the engine light on, left it running and said, "look last time I brought this car in you all told me you couldn't replicate and-or duplicate the symptoms I discussed, well this time all the prior symptoms happened again and the engine light is still on and the car is running, so I don't want the run around I want the car fixed under the warranty policy and I have contacted GMC corporate and they are tracking me, the car and you the dealer, with a case number"
Now that I have brought the car in two times I have logged the incident with GMC corporate, there is a history behind the issue and even if the warranty is up, they'll have to take care of it, because it was all documented before the warranty expiration.
One note, the car needs to be running around 1700 rpm for an hour or two, or taken on 1 to two hour trip.
Or in my case on 1000 miles trips, where the idiot light and chimes are going the whole time, what a annoying thing
:sick: :confuse: :mad:
Cause: F
J180 Engine Emissions
6WG94
1 12626222 belt
1 12609719 tensioner
33110 check out check engine lite. Scan computer control system. Found code P0300. Perform basic checks. Found misfire graph is showing all cylinders missing, when they really weren’t. Check fuel pressures, ok. Perform active fuel injector test. Injector test passed. Called tech-line. Tech-line said to remove serpentine belt and reset. Sure enough misfires are gone. Cause is belt tensioner bouncing and dragging on the crank. Tech-line said to replace belt and tensioner. Replaced belt and tensioner. Clear codes, drain capacitors, and perform crankshaft variation relearn. Retest for misfires, none. Road test, ok.
"Called tech-line. Tech-line said to remove serpentine belt and reset. Sure enough misfires are gone. Cause is belt tensioner bouncing and dragging on the crank. Tech-line said to replace belt and tensioner. Replaced belt and tensioner. Clear codes, drain capacitors, and perform crankshaft variation relearn. Retest for misfires, none. Road test, ok"
The way I got results was, after going to the local GMC dealer for 2 or 3 times, I called GMC corporate and told them of my dissatisfaction with the product and they opened a ticket, tracked it and contacted my dealer and told my dealer to get it done. The other big help was my dealer then calling the corporate GMC service "tech-line" and they had a fix-all as this has to have happened on previous occasions, due to their quick knowledge about crankshaft and serpentine belt info.
Bottom line call corporate, tell them you want it fixed, tell them you very dissatisfied with the product and will never buy gmc again, you will share your story with everyone, unless they figure out the problem. Make sure someone has contacted GMC tech-line. Tell them about my story and see of they have diagnosed the problem right or if they are just "throwing out ideas and solutions" like darts in the dark...
The other day it wouldn't start and I poped the hood. grabbed the wire harness to the computer box and shazam! it started. I then notice the conection was not senched down all the way which led me to suspect the contacts were drawing moisture, as humidity and weather seemed to make worse. I removed connection and sprayed it down real good with electronic cleaner to clean and dry it. plugged it back in and it is like new again. cleared the codes and all seems to be better than ever now. You guys might try this. An awnsered prayer for me! The Garages just wanted to take yo money with no results!
I apologize that you are experiencing a concern with your vehicle. Can you please email me your VIN so I can look into the situation further? You can get my email by clicking on gmcustsvc. Thank you,
Mariah GM Customer Service
1. Cylinder #1 coil pack.
2. Plug wires had only 15K miles on them, so I swapped out cylinder #1 wires with another cylinder, the trouble did not follow.
3. Replaced both O2 sensors, upstream and downstream on bank one side ( drivers side of engine).
4. Paid to have injector cleaner fed directly into the fuel rails along with a gas tank injector chemical.
Recapping, this is an intermittent problem, maybe 60-70% of the time the engine is driving rough. I have a decent error code scanner that provides lots of information. I can clear the error code and wait for it to come back.
Any ideas before I start going back and re checking / changing all the above again?
So does anyone have some suggestions if I should take their word that I need all that stuff or should I get a second opinion? Looks like alot of people have the same problems I have and just don't know where to turn.
If you do not trust the diagnosis I would recommend getting a second opinion. Please keep me updated on your progress.
Christina
GM Customer service
Most noted is the chrome rims corroding from the inside out! I'm a car guy and know how to take care of aluminium rims,but the cheaply made chinese garbage metal they use is horrible.
All 4 rims leak air everyday,I had to buy a air compresser and duct tape it to my car just so I could drive around!
My air suspension leaks all the time so I have to use 4x4's on roller skates to keep my bumper from dragging on the ground.
I was driving down the highway and the cheap plastic cover that's on the top of the rear lift gate flew off and got ran over by a semi,now it catches air and pulls to one side so I had to take an old airplane flap and rivit it down to stop the madness on the highway.
I WILL NEVER BUY GMC AGAIN! NEVER!
Dash lights flashing and won’t turned off then drained my battery so I just bought a new one.
Traction control off.
Stability track off.
Service Traction Control.
Flashing Engine Light.
Solid Engine Light.
Service Stability Track
Drivers side break light goes in and out.
All kinds of problems and now I just had it towed back to the same shop four hours away from where I’m stationed. It’s frustrating cause we loved everything about the car, you’re talking about a 5 ⭐️ rating to me for comfortable ride. I don’t want to get rid of our vehicle and it’s the one my family loved using every chance we get.
I swear this is the last time I’m taking it in the shop to get it fix, and hopefully they can cause I’m getting rid of it as soon as I am able to drive it back. It has been nothing a problems for us ever since 2017 when we bought the vehicle in 2015. I got to Germany(military PCS) in June of 2017 and then in October the vehicle started to have problems, now I’ve been dealing with it for the past 3 yrs which is my entire tour here in Germany. I am frustrated with GMC and I’m very disappointed cause they don’t care about my problems, this is my second Yukon with GMC and if you’re reading this, I WANT TO TELL YOU, DONT EVER EVER BUY A GMC vehicle. I’m so in love with the new 2020 Yukon’s that are advertising right now but I’m scare of all the problems that will come wit it.