mlee

Yesterday my 2015 Silverado 1500 5.3L (25k easy miles) started displaying the "Service 4wd" message and began significant front wheel hopping whenever I made a turn. I tried turning off ignition, cycling through the 4wd modes, etc., no joy.

It's at the dealer now but a quick online search revealed this as a quite common problem with this model and may require anything from a software patch, to transfer case actuator replacement, rewiring or transfer case rebuild. I also read more than a few posts from owners who have had the issue reappear multiple times. This is discouraging.

Is anyone able to offer advice or anecdotes on how to prevent this problem from occurring and also how to take steps to permanently fix the flaw?

Best Regards,
mLee

Hokiefan

As you may have seen in one of my earlier post, I 'Had' a 2017 Silverado that did the same thing plus "Service Trailer Brakes", "Service Stabilitrak", "Steering Assist May Be Lost" among others. Six trips to the dealer and they never found the problem. I finally had enough and got rid of it. Good luck to you.

two4twentysam

Any luck from the dealer yet?

oilcanhenry

I am hanging on to my 1998 Chevy K1500 for as long as I can. I never get codes like these as my GMT-400 pickup doesn't have all that stuff. I do wish I had locking hubs, but they don't have those for my old Chevy. Hell I wish I had a solid front axle like my Jeep.

If nothing else, the OP needs to drop the factory fluid out of his transfer-case if it's not been done already.

Rick Pedro

My 2015 did the same thing, supposedly your not supposed to drive on auto. Keep it on 2wd. I never had the issue again. I just joined this forum, so I know I'm a bit late on a response to this.

Rick Pedro

Also our work truck a gmc sierra 2014 had all sorts of electrical issues, stabilitrak service, and our dash would blink, then luckily it died on a side street as we got off highway. No control of truck. Issue was bad grounds behind the dash board up top where the speakers are. Clean and reinstall.

handsum santiago

Go here and watch the video: http://​​​​​​​https://youtu.be/cwAmoPHnxG8

RRocket 204

Not sure if you got this resolved, but I saw a video that mentioned a grounding wire that is directly below the drivers seat that and get corroded. Might be as simple as taking that apart and cleaning it up. I had this issue and just jiggling it a little temporarily resolved it for me.