Jump to content

Stuck in 4WD Hi - GM FIeld Action

fujifilmnut

By fujifilmnut
in Troubleshooting & Recalls

 Share

Recommended Posts

Silverado-Hareek Senior Enthusiast

Silverado-Hareek

Posted
Posted

Do we know about what temperatures this problem is happening at? I've only every seen people say extremely cold weather but I don't think I've seen an approximate temperature posted anywhere.

  • Replies 105
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

skinut
skinut

I have the same problem and just got done posting a long narrative about my ordeal under another topic heading. The long story short is I was told about the service bulletin and the same BS about have

skinut
skinut

My truck is only two weeks old with 1000 miles on it. I live in Minnesotain a rural area so getting in and out of my driveway can be difficult so generally keep my truck in the Auto four wheel drive m

Blizzard721
Blizzard721

Was at the dealer yesterday and they said all the 2014s are doing this but have yet to have a 2015 come in with the problem! But reading on here and I find the 2015s are at it too....hmmm! The new For

skinut Enthusiast

skinut

Posted
Posted

My problems occurred when the temperature was below zero. There is a new software fix for this problem

now supposedly. I've had my vehicle back for two weeks and the problem has not repeated itself but I have only tested it down to about zero degrees. I won't know for sure whether my truck is really fixed until next winter.

355HP Z71 Enthusiast

355HP Z71

Posted
Posted

Today it was 65 degrees here in Ohio and my service 4 wheel drive light came on . I was driving down a road going 45 in 2 wheel drive of coarse when the light came on . I decided to see if it would switch to auto and it would not . I came home stooped the truck and then restarted it and no more light . It also switched to auto when I took it for a drive . Still going to call the dealer tomorrow !

  • 2 weeks later...
Blizzard721 Enthusiast

Blizzard721

Posted
Posted

Finally after 4 months the part is replaced. ..reprogramming done....now to wait till next December to see if it is actually fixed! ? Other than that issue it's been an awesome truck with no other problems!

Jeremy2014 Enthusiast

Jeremy2014

Posted
Posted

Finally after 4 months the part is replaced. ..reprogramming done....now to wait till next December to see if it is actually fixed! ? Other than that issue it's been an awesome truck with no other problems!

 

No exhaust pings? http://www.gm-trucks.com/forums/topic/155069-pinging-popping-grinding-sound-from-rear-in-v4-mode/

 

My truck went in today for the 4HI issue yesterday still waiting to get it back.

chipz263 New Member

chipz263

Posted
Posted (edited)

Hey guys, never owned a GM before, but I have a '15 Yukon rental that I realized was stuck in 4wd. I really liked the truck, so I wanted to see if I could get it out of 4wd instead of taking it back and swapping it out. The knob wasn't doing anything, so I disconnected the negative terminal, went into the fuse box in the engine bay, and took out the 40A fuse that says 4wd something lol. Now the stabilitrak light is on, as well as service 4wd, but the truck is back in 2wd!! This is a quick fix for someone that doesn't want to ruin their $60k truck, and cant take it into the dealer soon. Hope this helps someone, even though it's just a half assed fix!

Edited by chipz263
  • 3 months later...
daman4799 Enthusiast

daman4799

Posted
Posted

Did they come up with a fix for this yet? Winter is getting closer, live in Wisconsin. Very sad we have to remember to switch to 2wd before turning off a new truck. Guess maybe I bought the wrong brand. Took it in twice last winter, forgot to switch once.

  • 2 weeks later...
evilhunter101 Enthusiast

evilhunter101

Posted
Posted (edited)

Just had to leave my 2015 Sierra at the dealer today. It was 102 degrees out yesterday when service 4wd came on. Won't switch from auto to any other setting. They've taken it for a spin and think something in the transfer case is broken, but wouldn't elaborate on what. My vin didn't show up for the recall or tsb about this issue. 15k miles.

 

Sent from my Nexus 6 using Tapatalk

Edited by evilhunter101
Silverado-Hareek Senior Enthusiast

Silverado-Hareek

Posted
Posted

Just had to leave my 2015 Sierra at the dealer today. It was 102 degrees out yesterday when service 4wd came on. Won't switch from auto to any other setting. They've taken it for a spin and think something in the transfer case is broken, but wouldn't elaborate on what. My vin didn't show up for the recall or tsb about this issue. 15k miles.

 

Sent from my Nexus 6 using Tapatalk

Well isn't that just great so it's not just a cold weather issue? I'm at the beach now and plan to take the truck out onto the beach at some point this week.

 

 

Sent from my iPhone using Tapatalk

evilhunter101 Enthusiast

evilhunter101

Posted
Posted

Well isn't that just great so it's not just a cold weather issue? I'm at the beach now and plan to take the truck out onto the beach at some point this week.

 

 

Sent from my iPhone using Tapatalk

Spoke to the dealership today, they say the transfer case cam actuator broke/shorted. So might not be related to original issue but I don't know since I am not that familiar with it.

 

Sent from my Nexus 6 using Tapatalk

daman4799 Enthusiast

daman4799

Posted
Posted

Just called the dealer to ask about any fix for stuck in 4wd. Was told nothing more at this time. Just the reprogram and put in 2wd before turning off engine. Are they going to do anything?

Silverado-Hareek Senior Enthusiast

Silverado-Hareek

Posted
Posted

Just called the dealer to ask about any fix for stuck in 4wd. Was told nothing more at this time. Just the reprogram and put in 2wd before turning off engine. Are they going to do anything?

 

I'm going to continue to just set it back to 2WD before shutting the engine off. At least while I'm at the beach. I don't want to drive 3.5 hours back home in 4WD or have to deal with the truck getting towed.

  • 2 months later...
daman4799 Enthusiast

daman4799

Posted
Posted

Just took my Silverado in yesterday. They came up with a fix last week. Had to reprogram again. Now wait for cold weather and see what happens. Also a recall for a bolt.

fireaxxe Enthusiast

fireaxxe

Posted
Posted

This is really going to screw up the transfer case which will be the bigger issue down the line. I am wondering how this will be handled. I changed the Dextron VI in the transfer case and the magnet was full of clutch and metal fragments. I had a little noise coming from the case but changing the fluid quieted it down. I recommend changing the fluid for those of you that have had this issue. I am not sure if I have ever had this happen but I have hardly used my 4x4 setting and the fluid was way too contaminated for minimal use.

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

    • StingerZ16
      Wow I'm in a pickle. (Broke down truck) and a story.

      By StingerZ16 · Posted

      Looks tight. Not a lot of working room. Hows yous knuckles?
    • Jsdirt
      2027 GMC Sierra: Official Discussion

      By Jsdirt · Posted

      Spot on. The government makes ridiculous mandates, and this causes manufacturers to jump through hoops for every TENTH of a MPG. Main reason quality is in the toilet and prices are in the stratosphere.   The gov't tightened the MPG requirements so much 5 years ago that the only way manufacturers could meet these absolutely ridiculous numbers was to go all EV. Hence the push.     Nobody hates good MPG, Atlas - nobody is "whining". Your side has that trait all locked up. What a stupid argument attempt!   What I particularly hate is the government meddling in the free market system. Had this system been allowed to work as designed and intended by our Founders, cars and trucks would be hitting numbers that would blow our minds, all while costing 30% LESS. Not only that, but engines could probably hit 150k miles again without needing major internal surgery.   My forty year old Ford 302 has 312k on it. Wonder what changed?🤔
    • revmanii
      Starting a new thread regarding mounting my 2014 OEM wheels to my 2026

      By revmanii · Posted

      The BORA 3/8" spacers arrived yesterday along with the extended lug nuts. I got the front wheels changed out today, but was overheated and covered in sweat so bad, I figured getting both front wheels done was a win, and took a cool shower. Hopefully, I'll go out tomorrow morning before it gets into the 80+ temps and do the backs. After getting the first wheel snugged up, I backed out one of the lug nuts then hand turned to count threads. I believe I stopped counting around 12-13, so I think I'm good there.    
    • Atlas
      2027 GMC Sierra: Official Discussion

      By Atlas · Posted

      My fullsize truck is averaging over 26mpg so I'm pretty happy with the increased fuel economy targets. When I had my gas Silverado (2020 5.3) it was averaging 21. Again, for a fullsize truck, that's very different from the 12-15 these things used to get 30 years ago.   Whine all you want, increased MPG is a good thing.
    • bluev8
      Intermittent no-code issues on 2022.5+ V8 trucks — what did the shop fail to capture?

      By bluev8 · Posted

      That is a fair point, and I think an OBD-first proof is probably the right next step. I agree that the value is not the hardware box by itself. The marketable part would be the software: always-on capture, baseline learning, event reduction, system-specific reports, and alerts. Also agreed that if an OBD device is always plugged in and has local storage, it should not miss the event in the same way that a scanner plugged in after the fact would. The only thing I would not want to assume yet is that an ELM327-class device gives all the late-GM data needed at the rate needed. Standard OBD live data, DTCs, freeze frame, Mode 6, VIN, and calibration information are definitely the right starting point. GDS2 also proves that a lot of useful ECM data can be viewed through the DLC without needing a DTC first. The question I need to test is whether the data needed for a useful GM V8 event report is actually available through the DLC, and at a useful sample rate: - misfire counts / roughness by cylinder - AFM/DFM state - oil pressure and oil temperature - fuel trims - voltage / reset context - U-codes and communication events - calibration / software information - whether these are standard PIDs, enhanced DIDs, Mode 6 data, GDS2-only data, or not available So I think the right benchmark is: 1. Build the OBD-only version first. 2. Keep it plugged in and logging locally. 3. Compare it against GDS2 / freeze frame / HP Tuners or another higher-end logger. 4. Measure which parameters are available and at what update rate. 5. Only justify ECM-side hardware if it captures useful evidence the OBD version cannot. So you may be right: the consumer product might simply be an always-plugged-in OBD event recorder with much better reporting. A question for you: when you say ELM327 devices can already deliver all the data needed, do you mean generic OBD Mode 01 data only, or GM enhanced data as well? For a useful GM V8 report, would generic OBD data be enough, or would you expect the tool to include enhanced items like misfire by cylinder, AFM/DFM state, oil pressure/oil temp, U-codes, and calibration information?

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...