Jump to content

Traction Control Activating on Left Turns

Tville
 Share

Recommended Posts

Tville Enthusiast

Tville

Posted
Posted (edited)

Anyone having issues with the traction control cutting on and applying brakes?  Truck is activating brakes & traction control system when turning left. Also, sporadically applying brakes and displays “hill start active” when not on hills. Dealer is waiting on GMs direction- speed sensors, wheel hubs, etc 

Edited by Tville
Forgot to turn on reply’s
Bopper21 Enthusiast

Bopper21

Posted
Posted

Interesting enough I had this happen pulling out of a parking space (forward) turning left. It seemed very aggressive.

It was completely dry asphalt and about 82°F.

 

My 7 year old son said, "daddy, what was that!?"

Tville Enthusiast

Tville

Posted
  • Author
Posted

Yep, mine did it a couple of times and I didn’t really think too much into it- then it got to where it was doing it every time- traction control continued to activate and pump the abs- dealer has had it for 3 weeks now and GM Engineering has had them pull speed sensors etc with no fix. GM is having them replace speed sensors- however, no parts are available. Needless to say, I am pretty disappointed. Deemed inoperable 

 

sdelam Enthusiast

sdelam

Posted
Posted
14 hours ago, Tville said:

Yep, mine did it a couple of times and I didn’t really think too much into it- then it got to where it was doing it every time- traction control continued to activate and pump the abs- dealer has had it for 3 weeks now and GM Engineering has had them pull speed sensors etc with no fix. GM is having them replace speed sensors- however, no parts are available. Needless to say, I am pretty disappointed. Deemed inoperable 

 

That sucks, hopefully you got a good loaner

  • 2 weeks later...
Tville Enthusiast

Tville

Posted
  • Author
Posted

Over 1 month sitting in the service parking lot out of service. I am highly disappointed. No one is able to provide info as to when parts will be available. 

  • Sad 1
Tville Enthusiast

Tville

Posted
  • Author
Posted

Speed sensors replaced, no fix- ABS Traction Control activated as soon as the first turn. The dealer will be attempting to replace one of the front hub assembly’s
Anyone else who may be experiencing this should definitely report. Will update 

jpgcrna Enthusiast

jpgcrna

Posted
Posted

I have a 2020 denali that is having this issue but seems to be milder than some of yours. For me, on very tight left hand turns while going down a grade. For instance the local McD's does it to me every time here. Going around the parking lot there is a left turn going downhill. The ABS kicks in and the traction control light flashes. It feels like it is only happening in one wheel up front but I can't be sure. It does not cause me to stop. If I go slow enough or try to widen out the turn a little bit then I can keep it from happening. In my mind, this has to be a sensor calibration issue, my bet is they can fix it with an ecm flash. Since it doesn't happen often, and doesn't happen at all unless in that specific situation for me, I've decided to wait until there is a tsb to get it fixed, I don't really want any down time on the truck.

Tville Enthusiast

Tville

Posted
  • Author
Posted

Update:

truck has been out of service for 6 weeks now- new speed sensor (no fix), new wheel hub (no fix), new calibration (no fix). Did something with the steer angle sensor and thought that may work after the tech test drove, did one final test drive yesterday before telling me to come pick it up and the truck began engaging traction control and ABS on left turns, so they have another request into TACS. The dealer has another brand new Denali Duramax on the lot that is doing the same thing. If anyone has any info, it would be greatly appreciated. $80k experiment truck, trying so hard to remain patient, it’s getting tough though. 

MTU Alum Enthusiast

MTU Alum

Posted
Posted

I calibrated these systems in the past.  I would be really looking at longitudinal and lateral acceleration sensors.  I believe these are contained in the air bag module (SDM).  I would probably see if these signals could be zero'd or recalibrated.  I would look at the mounting of the module and make sure it is sitting flush (seen issues before where welding flash on a stud made module not sit flush when torqued up).  With you having a hill start issue (using long acceleration to determine grade) and issues with torque reduction in corner (looking at lateral acceleration sensor), I would start there.  

 

#iworkforGM 

Tville Enthusiast

Tville

Posted
  • Author
Posted

I will pass this along to the tech- thank you. I know they mentioned Thursday that something was off 180 degrees at times, which they said was extreme 

Tville Enthusiast

Tville

Posted
  • Author
Posted

Just an FYI, wheel hub, speed sensors, re-cal all failed to fix the issue. Tech is working with GM Engineering (something regarding a steer angle sensor). Multiple Denalis on the lot are doing the same thing. If anyone has any info, would be greatly appreciated!

  • 1 month later...
Duck749 New Member

Duck749

Posted
Posted

Newbie here, found this because my 2020 2500 with 150 miles on it started to do the same thing - second time out driving noticed it. Last night did the same thing on dry pavement when turning downhill with brake on to pull into my driveway. I am curious before I call the dealer if anyone has heard of or found a fix for this?

Tville Enthusiast

Tville

Posted
  • Author
Posted

They are working on a fix from

my understanding- GM Engineering is coming out to evaluate. I will update once I have more info. 
Is yours only with left turns?

Tville Enthusiast

Tville

Posted
  • Author
Posted

Ok, very similar to my issue- mine does it on left turns even when I am not applying the brakes, and has began to do it on flat turns as well. I will update after I meet with field engineer, they have been data logging and sending the info to GM Engineering.  The dealership is able to duplicate it just pulling into their lot- they have tried a number of things- swapping parts, calibrations etc and they have not been able to fix it yet. 

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

    • dna9656
      No low range 4 x 4

      By dna9656 · Posted

      My 2015 1500 LTZ Silverado suddenly won't go into 4 x 4 low. It will go into 4 x 4 high.
    • asilverblazer
      Transmission Woes :-(

      By asilverblazer · Posted

      Yep, just a quick reference point.    My main point being I’d do a thousand other things before I’d pay 10k for a transmission.    Speaking in ignorance cause I don’t look at these trucks, what is it worth? 20k?
    • asilverblazer
      Intermittent no-code issues on 2022.5+ V8 trucks — what did the shop fail to capture?

      By asilverblazer · Posted

      I think users are going to want to pick their monitored parameters, which parameters they want to see first.    It should probably start with baseline at a minimum and adjust to learned, but be able to overlay baseline for comparison.   A simple severity level would be able to determine what type of alerting is appropriate or user selectable.    Why not use the OBD port though?   I think a phone connection would be a good idea, push notifications type deal.   Number 1 issue is having data is useless if you don’t know what the data should be under normal conditions. 
    • Chuck FB
      summer road trips in the 2026 2500HD

      By Chuck FB · Posted

      I thought I would use your thread and add to it as I just did my first longer drive with my truck in the last couple of days. I drove from the Grande Prairie area of Alberta down to Edmonton and most of where I drove in the city was the ring road so fairly free flowing but a bit of stop and go as well in the city. Stayed the night and returned home and not too many stops along the way each way but every restart and certainly every cold start sets it back for fuel mileage. Why I say that is I see some people will cherry pick a fuel mileage leg after the vehicle had been warmed up driveline wise before hand and its a forgiving ( easy rolling drive leg for example ) and call that their fuel mileage which can give a false perception of reality. I was not heavily loaded at all but never the less the flip bak cover, rubber bed mat, various tools etc and extra jerry cans of fuel all way up to a few hundred pounds of dead weight so its not an empty truck. The cold inflation tire pressures are set more near the freezing point so once they are warmed up driving I was showing 45 front and over 40 rear and realize high inflation pressures would help a little in fuel mileage but certainly not the ride on our crap sections of highway. The weather was good so was not raining as that can really drag mileage down, in fact I had a bit of a tail wind on average driving home. Most people on here would never have driven on that freeway to visualize it but its got a fair bit of rolling type of landscape with numerous river valleys. For the most part I had it on cruise set to 62 although kicking it off if I caught it in time before it started down shifting and self braking going down the grades. Most of the more substantial grades its shifting into 7th I believe as 8th just doesn't have it. Total distance round trip was 643 miles and my overall average and I did refuel three times in all, figured out to 17.65 miles per US gallon. My best fuel mileage section refuel within all of this figured out to 18.46 and these are all hand calculated figures. I find if anything that the trucks computer can be over optimistic, sometimes its pretty close but other times its stretching it. On paper persay in theory the truck would have just about made it on fumes for that whole drive without refueling once.    Which made me think of the topic thread of the wonder if these trucks could do 20 mpg and that is a good question, certainly would have to be on an easy going flat highway, no head wind, the right temperature, not packing around a bunch of dead weight and puttering along even slower than I was I would suspect and going steady and not stopping to smell the flowers or take a piss !. It probably is possible but not without effort to attain that with the wind resistance and weight of these trucks. Of course on my drive most people are passing me if they have the power as per loaded highway tractors, never mind a lot of speedy vehicles but the speed limit is 68 and most are at or well over that. 
    • Aimatdeer
      Ac not keeping up

      By Aimatdeer · Posted

      Monday looks like a good day for the dealer to test an ac issue. Hopefully it all turns out good.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...