Stuck in 4WD Hi - GM FIeld Action

[Jeremy2014]

It has to have the code cleared 1st. After that you have to remember to turn it back to 2wd, if you do not turn it back to 2wd the error will come back. Going in for the 2nd code clear tomorrow.

[lowercanada]

It has to have the code cleared 1st. After that you have to remember to turn it back to 2wd, if you do not turn it back to 2wd the error will come back. Going in for the 2nd code clear tomorrow.

So I just returned from the shop and all is good for now. They cleared the code and advised to put in 2wd when shutting down as you said. Hopefully they come up with a fix for this. I know I'll forget one day. Haha

 

 

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[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 to keep it in 2 wheel drive high before shutting it off, the low temperature problem, etc. The bottom line is there is no fix and it is also showing up on 2015 models! Come on GM this was supposed to be truck of the year! Looks like maybe there needs to be a class action suit started here!

[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 mode at all times. Two days ago after sitting outside in below zero weather I remote started the truck for warm-up. When I went to start out and put the truck into drive I noticed the Service Four Wheel Drive alert come up on the screen. I thought it was part of the self test the vehicle goes through so I click the disregard button. Not sure what happened but did not notice if the truck was in high four wheel drive or not but the selector remained on the auto setting. When I got done with work nine hours later when I went to drive away I noticed the truck was definitely in four wheel drive mode, but this time in the low mode. I could not get it to come out of low four wheel drive. Called the dealer service department and they had me try different setting and shut the vehicle off and restart but nothing worked. I have fifty miles home from work so my dealer suggested going to the GM dealer in the town where I work and not to drive the vehicle. The dealer there said they were too busy to look at the truck but told me they have had four or five 2014 1500 Silverado's with the same problem and there was a service bulletin out on the problem, but get this GM doesn't have a fix for it. Evidently the Automatic Transfer Case on Some of these vehicles have a condition in which an electric signal short or software glitch may cause the active transfer case to switch without operator input. The transfer case mode selection knob would still indicate the last selected drive mode, and the driver will not have any feedback that the transfer case has shifted.

I looked at the service bulletin and it was dated December 22, 2014! So now I am pissed off as I have to get home somehow. I call my dealer again and they say they will pick up the truck in the evening with a flatbed tow truck! Remember this truck only has 1000 miles! So I get a hold of my wife, and I'm sure you can understand her mood when I tell her she has to drive the 50 miles to pick me up and the 50 miles to take me home again!! The next day, yesterday, the local dealer calls to tell me they have the truck out of four wheel drive and in the 2 wheel high mode. So I ask what the fix is and they too tell me there is no fix! Can you believe this? The service bulletin suggests keeping the truck in a heated garage (they don't furnish those where I work!!), and only shift into four wheel drive or auto four wheel when the vehicle is started. The best part is that when you shut the vehicle off make sure the drive selector is always turned to 2 wheel drive only. I don't know about you, but I know I going to forget about that again at some point and be stranded with the thing in four wheel drive low again!!! In the mean time the service department tells me GM is working on a fix. People, this is a $53,000 sticker price vehicle! I mean they must have known about this problem for over a year because not only are the 2014 models affected but also some 2015's! And this was Truck of the Year?!!!!!!!! What should my next move be on this vehicle as this is totally unacceptable and not even sure when if ever they will have a fix and I can't be without four wheel drive for my commute and getting out of my yard!!!

 

[Blizzard721]

This problem is totally pissing me off....2 months now and still no fix! I only have 6000 km on mine and stuck in 4 wd....Thank God its not stuck in 4 low or 2 wd!!! I called GM and requested my money back but the wouldn't give! Seriously. ...if it was stuck in reverse would they still expect you to use it! This truck is broke! FIX IT!!!

[redwngr]

There is a post in the suv section complaining about being stuck in 4wd Low...

[lowercanada]

This problem is totally pissing me off....2 months now and still no fix! I only have 6000 km on mine and stuck in 4 wd....Thank God its not stuck in 4 low or 2 wd!!! I called GM and requested my money back but the wouldn't give! Seriously. ...if it was stuck in reverse would they still expect you to use it! This truck is broke! FIX IT!!!

Yeah they probably would. Haha.

 

 

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[Cliff14Denali]

Mine locked up in Auto 4wd 300 miles away from home up in Vermont while on vacation. Called onstar to have them document it and basically drove home in 4wd. Just dropped off my truck at the dealer with all of the information from this site with the possible fixes. Service manager said he did a few already and he is a small dealer. Wake up GM!! Fix this problem ASAP!

[Colossus]

What makes you think they aren't trying?

[pm26]

Interesting. That never seemed to be the issue with earlier model GM trucks. I know my 2006 Silverado never failed me that way. What did GM change in the transfer case shifting mechanism to cause this? It almost sounds like the shifting solenoid or something is freezing up in cold temperatures. Perhaps they started using lower quality parts that do not work well in cold weather?

Edited February 10, 2015 by pm26

[skinut]

They can't be trying too hard if the 2014 models had the problem and now the 2015's still have the same problem. Keep documenting all of the problems you have and file through the lemon law. If they get enough of us filing maybe they will wake up! I'm afraid to use the four wheel drive mode now for fear of it locking while I'm going to work. Had a hard time getting out of my icy driveway this morning. This is ridiculous!

[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 Fords are out! Wonder what my 9 month old truck is worth on a trade in? No seriously. ...I just want my truck fixed! !!

[SILVER SLED]

There is now an updated reprogram that should fix most of these. I thinks it's 5220B.

[Blizzard721]

I just checked with GM Canada and they don't know about this fix? That's the number you got or is it PIP 5220B? Where did the info come from? A dealer?? Hopefully we'll get it soon!

[Cliff14Denali]

Got mine back from the dealer today and all they said was codes C0398 and C0326. R&R gear position sensor, R&R transfer case control module. Tighten all connectors at X115. Cleared codes road tested OK. Service manager said that they are still working on a permanent fix but as of now only park the truck in 2wd. No word on update fix.