Jump to content

Recommended Posts

Posted

Hello all.  New to the forum and I appreciate any help. So I’m climbing a 10% grade, well maintained dirt road that’s covered in packed snow the other day and suddenly I get the warning ding and a message that says 4 wheel drive off. Rear end breaks loose, traction control stops the climb, and I’m stuck. Truck off and on a couple times, will start shift into 4 wheel drive then does the same thing. Had to chain up to get out. Owners manual says this will happen when the 4 wheel drive system is overheating. I had used it for about 2 minutes and nothing was more than warm to the touch. Can’t find anything online about it. I have no idea where to go from here without going to the dealership and spending all that cash! Any help is much appreciated. 2014 Sierra 1500 Crew, 4.3L 6, 98k. 

  • 4 months later...
Posted

Did it work ok after it sat and cooled off? If not what was the issue?  This happened to me yesterday. 

Posted

Might use a scanner and see what codes come up. 4 wheel drive system over heat I would think... would have to be the transfer case oil temp ???  I am not aware of a temp sensor in the T case....  but ...  hmmm this is a new one....

Posted

Were you in Auto or 4Hi?  I can see this happening in Auto, since the clutches may have been slipping some creating heat.  4hi should lock it up and not create heat.

Posted

Actually 4 low in my case. Stuck in the mud. I noticed a burning clutch smell when I got out. I haven't been back out to the truck to check it out yet. Maybe it usesthe trans temp sensor? 

Posted

Here’s a link to the full rundown of my situation. Hopefully yours is something different. 

 

Posted

Let it sit there all night and pulled out this afternoon. My wife says it goes into 4 hi/lo and auto however when in auto it throws up the service 4wd message. I had this message a few months ago and they replaced the actuator. I'll know more after I get home. 

  • 7 months later...
Posted

hi i have a 2014 gmc and i was driving it in the snow and i was in 4hi, and it kicked me out three times. and i was not in anything that was hard driven.

it seems to be a intermittent problem. anyone els run into this

  • 2 months later...
Posted

Not to bring an apparently dead topic back into relevancy, but just had this same thing happen to me wheeling with some friends. 2015 Sierra SLE All Terrain. Pulled into a creek in 4Lo, sank into the silt and gave it consistent gas to pull my way through, started to slow and gave more gas to increase speed and on the up-rev got the “4WD OFF” message and bogged down in water midway up my doors? Jeep and 4Runner in front of me had to pull my heavy ass out and got through it no problem. Had to lean it down hill to get all the water to run out of the floor pans. This has happened before in the same situation while in mud in 4Lo and gave gas to keep moving and “4WD OFF” message and got bogged. Anybody know why this happens and if there’s an override? 

Posted

Forgot to mention, once this happens both times I have had to be drug out and shut the truck off, keys out, and let it sit for ten or so minutes before there is any function to the 4WD dial. Light goes out on the dial, and the truck shows it’s in 4WD^ on the offroad page but no power to the front wheels. Had I been alone I’d be writing off a truck and absolutely shafted. 

  • 1 year later...
  • 4 years later...

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
  • Latest Articles

  • Posts

    • The timing marks are ok, that is #1, you can turn it over until they line up and it won't change anything, the crankshaft turns twice for every camshaft revolution, I have always set up SB Chevs as your pic shows using a straight edge
    • Someone's been here before.... There is a receipt for a 3-piece timing set, purchased earlier this year.   Is this picture something, or, nothing?   I have the timing cover off and my crank is perfectly TDC and the keyed gear's locating mark is dead on 12 o'clock.   The cam gear locating mark is also at 12 o'clock. Now, I'm not an expert, but all the install guides say the two locating marks should meet and be perfectly aligned when installing a timing set. The mark on the crank should be dead on 12:00 and the cam gear's mark should be dead on 6:00, and both marks should be perfectly vertically aligned.   I believe the timing gear is keyed or has a dowel that ensures it can only be installed on the cam in one position, so I have to believe the cam is out of phase somehow. At the very least, with a triangular bolt pattern, it can only be installed in one of 3 different positions.   Before I pulled the front cover, the truck was running alright, no service engine soon lights except an occasional P0172 / rich condition. Timing -16 timing at idle (should be +16), and total -35% fuel trim, two conditions I haven't been able to figure out.   In related news, my injector tested pretty well, wasn't leaking, but I had it rebuilt anyway, and it's on it's way back to me.         Along with this discovery, the good and bad:   Good: The oil pan seal appears undamaged.   Bad: -The timing cover has been reused, and the positioning dowels have been broken. That could explain some of the leaking. -Some kind of white paste or grease was used to try to seal the oil pan seal and timing cover (since wiped off..). -Then, someone globbed silicone all over the front of the cover and also buried the ckp sensor in it. But, they didn't put any inside the cover or use RTV to try to seal the oil pan seal with the timing cover (good).
    • The guy that owns K&P filters last I checked in with him has over 300,000 miles on his Dodge base Hemi using his own 35 micron absolute stainless mesh filter from its first oil change.    The GM study I've posted a dozen times shows the relationship in engine life based in multiples of base units, not miles or years. That is the base unit is the number of miles the motor ran using the reference filter efficiency.    The above two paragraphs dismantle anecdotal arguments IF one changes oil often enough to prevent particle formation and the motor is in otherwise good shape. That is not full of silica (no air filter) or suffering a metallurgical issue that is not part of the lubrication discussion. Poor heat treat in example.   Data from UOA's I've reviewed from more than a few engines can show remarkably broad variations in oil cleanliness using the exact same filter over the course of an engines life.     Lastly there is the common sense of it. Wear debris WILL circulate the engine BEFORE it ever sees a filter in route to that filter and WILL harm the pump which NEVER sees filtered oil.    Alpha question then becomes, given the facts, how long do you believe is a reasonable service life from a vehicle you are certain you will not pass down? That is the junk yard will be it's resting place when you're done with it? (the moral issue most don't care about).    Omega question is then how diligent are you prepared to be in general mechanical, air & oil maintenance? Preventing particulates and keeping them sufficiently dilute; preventing the precursors from generation, amalgamation and precipitation.    If I get a good look at the engine bay of a vehicle I have a fair idea of the owners commitment to the inside of the power train. That 30 micron WIX is still more efficient than a sieve.                 
    • It also depends on what criteria someone is using for “best” when talking filters.  Are we going off best efficiency?   Best quality/QC?  Etc. because the two may not mutually exclusive.  
    • They’re not the same wiz as 10-15 years ago.  QC has fallen pretty hard.  The XP line was never good though in the first place.    https://bobistheoilguy.com/forums/threads/wix-filter-rusted-through.386492/post-6991372   https://bobistheoilguy.com/forums/threads/i-ve-used-my-last-wix-filter.27299/   https://bobistheoilguy.com/forums/threads/looking-for-a-better-replacement-for-wix-51258.403977/   https://bobistheoilguy.com/forums/threads/convince-me-in-using-the-purolator-boss.401537/post-7420147   the forums are littered with posts and examples of not great wix filters the last couple years 
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...