Jump to content

Service 4WD

ShotgunZ71

By ShotgunZ71
in Troubleshooting & Recalls

 Share

Recommended Posts

ShotgunZ71 Senior Enthusiast

ShotgunZ71

Posted
Posted

Got in the truck Sunday to go to church, and got the "Service 4WD" message in the DIC. It's in 2WD and the indicator light just goes off if in any position besides 2WD. I've used 4HI and 4LO a few times in the past and never had any issues. Did a quick search but the results were either for older 2500's or for 1500s. Didn't know if anyone up here has had this happen yet on the 2015+ 2500HD trucks. I do plan on taking it in soon and getting looked at.



I have it scheduled to be looked at next week. Any ideas would be welcome, though.



Sledge8 Enthusiast

Sledge8

Posted
Posted

My old 04 2500Hd used to do this from time to time. I would guess 4-6 times in 12 years. I would shut the truck off and on restart the message would be gone and all worked as designed.

Once in a while I would also get the heater come on when it was 90 outside. Same thing, shut it off and restart all good back to AC. Haven't seen either on the new truck yet...

 

Damn Computers....

  • Like 1
magnum74 Enthusiast

magnum74

Posted
Posted

There was a TSB with something to this effect on the 1500's but not sure about the HD's. Sounds like the same problem, though. It was a switch/sensor issue and not an actual mechanical problem.

ShotgunZ71 Senior Enthusiast

ShotgunZ71

Posted
  • Author
Posted

Hope to hear something late tomorrow afternoon or Wednesday morning. I'll be sure to share their findings.

 

 

Sent from my iPad using Tapatalk

ShotgunZ71 Senior Enthusiast

ShotgunZ71

Posted
  • Author
Posted

They told me they had to order a new actuator. It should be in tomorrow.

 

 

Sent from my iPhone using Tapatalk

ShotgunZ71 Senior Enthusiast

ShotgunZ71

Posted
  • Author
Posted

Update: The 4WD Actuator was order Wednesday afternoon and was still in transit with FedEx yesterday. Hopefully it will arrive Monday and I will be able to get the truck early in the week.

ShotgunZ71 Senior Enthusiast

ShotgunZ71

Posted
  • Author
Posted

Still under warranty? Hopefully this will fix the situation.

Yes, it's still under the B2B 3/36 warranty. At least for another year or 11k miles.

  • Like 1
ShotgunZ71 Senior Enthusiast

ShotgunZ71

Posted
  • Author
Posted

So, the service rep misspoke about the particular part ordered. No biggie. They had to order a new module for it. That came in and they went to program it, but after last evening and this morning, said that it wouldn't take the program. They are sending the "new" one back and having another new module overnighted to the dealer. I have the truck back now with the "Service 4WD" message and now a "Service Stabilitrak" message, as I had to have it for the next few days. They will call me when the module gets there and we will schedule an appointment to get it installed and programmed. Started to get a bit agitated, but realized that it's out of their control as far as a bad component is concerned. I truly hope that the new module comes in and can be installed and programmed correctly the first time.

ShotgunZ71 Senior Enthusiast

ShotgunZ71

Posted
  • Author
Posted

Finally got my truck fixed. I had to take it back to them once the part came in, as it was no need for it to stay there when I could use it. As it turns out, the problem was cause by a corroded wire coming from the module. Apparently a rodent or other vermin nibbled at the insulation, possibly before I even bought the truck, and the wire finally corroded enough to break the circuit. All was repaired and it's driving like new.

 

Side note, a friend of mine was telling the story of test driving a new truck, and when they opened the hood they found that something had been having a field day with the under-hood insulation.

  • Like 1
  • 2 months later...
Ian Pritchard (Hydroguy8) Enthusiast

Ian Pritchard (Hydroguy8)

Posted
Posted (edited)

Had that warning on for 11 years on my '06 Silverado. Into the dealer at least 4 times-said corroded ground wire. Never did get it fixed long term. Waranty was up quick with my mileage at that time. Warning is still on, but truck still performs as it should, but is slow to engage 4WD and must shut off truck to disengage 4WDwhen it's in the Autotrack mode. 

 

My 2015 is good and my 2017 HD is good too, fingers crossed!!

 

Edited by Ian Pritchard (Hydroguy8)
  • 2 years later...
dpbetts3 New Member

dpbetts3

Posted
Posted

I also have the same issue." Service 4WD" for  new 2019 GMC sierra  truck .

Comes on  intermittently .

Went into dealer  approx. 3 weeks ago.

Told me they had to order a new actuator.( was not moving when  4WD selected)

None in stock.

Dealer said GMC has to make  a new one?

Still waiting.

  • 2 weeks later...
  • 3 weeks later...
Ct1022 New Member

Ct1022

Posted
Posted

2019 2500 hd service 4wd dealer replaced the actuator transfer case module transfer case wire harness and the fuse block still getting the service 4wd light intermittently 

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

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

      By Atlas · Posted

      Declaring victory would upset the demons that possess this Blazer, so I won't. But I did make progress today--after it put up a fight. Always a fight.   I had the day off so I spent the morning cleaning up the shop and I thought I'd get ahead of things by filling the cooling system in prep for the final part I needed to arrive: the driver's side knock sensor. Glug, glug, glug....and then the unmistakable sound of liquid hitting the shop floor. It induces the same chagrin when the sonar and targeting laser temporarily malfunction during a late night bladder evacuation over the toilet with the bathroom light off. D'OH!!! That made a mess...   Oh, hey, that knock sensor I removed? It threads into a wet port. Who knew?! Learn something new every day. Put a pin in that chore, I'll fill it the rest of the way later.   The knock sensor arrived at about 1pm. I threaded it in, connected the wire, filled up the coolant, checked for leaks, and... drumroll.... fingers crossed for a perfect start, excellent timing, model fuel trims, and ...no squeaks... Here goes.....   No, it didn't start. At all. I cranked it a few times and it wasn't sounding good. Furthermore, I heard leaking again. Jesus H Tapdancing Christ, stop leaking all over the dang floor. This time I had accidentally overfilled the coolant reservoir and the churn of the water pump via cranking caused a bit to burp out. Ok, just, breathe... Put the flamethrower down. Dang thing wouldn't burn anyway, leaks too much...   Did you know the rotation of a round crank sensor in a round hole, matters? I do now. Took me about half hour to retrace steps and realize what I had done. Then it started right up.   No squeaks. The squeak was the old balancer.   Once it entered closed loop, fuel trims are dead on, hovering right around zero at idle. No more -30%. I'll credit the injector rebuild on that one.   Timing? I think there's an OBD 1.5 translation error with my Actron scanner. It's anywhere from -20 to -30 at idle, sometimes as high as -40 cruising. Sorry, the engine just isn't running that smoothly at -40 degrees ignition advance. It's just not. It's smooth all through the rev range and has decent power. I'm going to have to trust the seat of my pants on this one.   The new exhaust is very quiet. The old catalytic converter? Not melted, but definitely not healthy. Rains glitter when you turn it on its end...all the precious metal is flaking out. Once the new exhaust system burned in/smoked off a bit, the engine's exhaust smell is normal again. Not that I'd recommend going around huffing car exhaust, but, you know what I mean?   One problem to correct. The new exhaust has the opposite problem of the old spliced up exhaust. It wants to hit the floor where the old one wanted to rest on the cross member. Happy medium, please? Still noodling on that one, need to look at how I can adjust some hangers.   I don't know what's next. On one hand I want to run away from this thing as far and as fast as I can -- there have been a lot of NOT fun moments. On the other, now that it kinda drives nice, maybe drive it around for a little bit?   Shhh... it's not currently dripping oil all over the floor. I can see just a little wet at the bottom of the timing cover where it meets the oil pan seal. It's not dripping multiple drops with every ignition cycle, in fact, after some driving this evening it has yet to even form a drop that could drip off yet. But the weekend is young... I fully expect this could turn into Exxon Valdez by Sunday. Because this Blazer hates me. LOL.      
    • Grumpy Bear
      The Peckish Synapse

      By Grumpy Bear · Posted

      About that:   Once upon a time in a land far far away lived a car company that was shy about taking your money and wanted to be sure that they gave you more that you asked for so that you'd come back. No really, not a fairytale. 😱   But after the field got thinned out enough to limit the competition it seemed good enough to give you only what you asked for. Fair enough I say but in such a market you have to give something the others are not or they go to the one who does. Gimmicks or glitz. Oh, fins and chrome. Yea, shinny crow like cars. Yum.    Field narrows a bit more and 'brand loyalty' becomes a thing and the minute it does they start thinking to themselves, "Could we make more money if we gave them less than they expect and they will hang in there for brand and comfort with the known?" They gave it a try and da*n, it worked!!    Well, what if we teach them, groom them into believing that less is "Normal" and cut some more corners. Will that work? Oh heck yea!    🤔 I wonder, can we give then WAY less than they expect and make them mad enough to spit nails and STILL get them to pay up? Sure, if we get everyone else to do the same so that the choice is less or nothing at all. How would be do that? Platform sharing.  What a concept, right?  Steal like there is no tomorrow and it's legal too!    Truth is no one is going to give up driving, not for very long. The Gen Z crowd is fine with it and will be as long as someone not Gen Z will haul them around. At some point we all die.    Economic voting only works if you cast a NO vote now and again and enough of them to get dumb and dumber to wise up. Well, that's how I was taught anyway. And it should have worked. Would have worked. But the Bail out!!   Look, you have another choice if  you take that bag off your head. If the dumb it down to some predetermined expectation of how John Q Public will use it the, that is under design it to failure they you use it to a lower stress mode. D'ho!    A 1950 Royal Enfield Bullet 500 will go anywhere a Suzuki Hayabusa will and for just as long. But you will have to treat it for what it is and not for what you wish it was. 
    • Vu1can
      Bridgestone vs Goodyear tires?

      By Vu1can · Posted

      Maybe I was just too unlucky, but I had nothing but bad luck with Bridgestones. Out of 3 sets, they all started losing a lot of air when they got down to about 1/2 tread life, and at that point also wet traction suffered more than it should have. Also, the only tire I ever had in my 60 years of driving that had a side wall blow out was a Bridgestone.   I'm currently running Goodyear Wrangler Workhorse AT and am very happy with them.   
    • davester
      Broke Down on the Mountain

      By davester · Posted

      maybe when the trip is over, check all the other joints in the front end, like all the ball joints, tie rods, pitman & idler arms, etc...
    • Carlos Eduardo Silva
      adding 360 surround view, UVI (Trailer Camera) package to UVS (Surround/invisible Trailer) Upgrade 2020 Silverado RST

      By Carlos Eduardo Silva · Posted

      Thks, and actually it was my bad, because here in this post there is someone showing the correct wire position as well. My bad... But thank you a lot with the help as well. I was able to find and buy a 10 channel VPM that came from a sister silverado of mine. The same year, same mode, same trim, same everything. 2022 Silverado 1500 LTD LTZ (pre-refresh). I also found to buy just the bottom mirror part that has the cameras, so way cheap than the full mirror. + a used front camera. I did test everything together, cameras, cables and the VPM.... everything worked EXCEPT my original Bed camera and the backup grid lines. I think the reason is because now I need to do the VPM reprogram. I sent a msg White Automotive & Media Service to confirm that it is the problem and that they can do it service for me case.   Once I get it 100% done I will post here result....

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...