|
Joined: Jan 2008
Posts: 2,140
Campfire Regular
|
OP
Campfire Regular
Joined: Jan 2008
Posts: 2,140 |
Took off tonight on wet streets with a temp just a little below freezing. Rained in the afternoon and then cooled down. 2012 Silverado was sluggish going into either auto or 4 high, and the check four wheel drive message came on. Appears to be working now. Is this common, and could the cold temps/wet streets have frozen something up on the outside of the transfer case? If you had a similar experience, let me know!
|
|
|
|
Joined: Jan 2006
Posts: 69,390 Likes: 4
Campfire Kahuna
|
Campfire Kahuna
Joined: Jan 2006
Posts: 69,390 Likes: 4 |
Does GM still use the heat activated actuator to engage the front axle? That thing was famous for being slow shifting in cold weather.
“In a time of deceit telling the truth is a revolutionary act.” ― George Orwell
It's not over when you lose. It's over when you quit.
|
|
|
|
Joined: Mar 2006
Posts: 17,289
Campfire Ranger
|
Campfire Ranger
Joined: Mar 2006
Posts: 17,289 |
Does GM still use the heat activated actuator to engage the front axle? That thing was famous for being slow shifting in cold weather. No. GM got rid of the heat actuators in 97/98. There's nothing in the 4WD system that should be affected by snow or cold. If the problem reoccurs then take it to the shop.
|
|
|
|
Joined: Nov 2008
Posts: 4,205 Likes: 1
Campfire Tracker
|
Campfire Tracker
Joined: Nov 2008
Posts: 4,205 Likes: 1 |
I want to say my 2011 did this when it was raining. I can't remember what the fix was, but I think it was a warranty thing. Whatever it was I do not believe it was serious.
|
|
|
|
Joined: Jan 2008
Posts: 2,140
Campfire Regular
|
OP
Campfire Regular
Joined: Jan 2008
Posts: 2,140 |
Message gone, and it will shift, but takes about a block to complete the 2 high to 4 auto (or 4 high) shift. All other shifts (4 to 2, even 4 high to 4 low, in neutral) are nearly instantaneous. Guess I haven't paid too much attention to the time/distance the 2 to 4 shift took before I saw the message. Is a bit of a delay from 2 high to auto or 4 high normal?
|
|
|
|
Joined: Nov 2008
Posts: 4,205 Likes: 1
Campfire Tracker
|
Campfire Tracker
Joined: Nov 2008
Posts: 4,205 Likes: 1 |
I always slow down to a crawl to shift and mine goes into either range almost right away.
|
|
|
|
Joined: Mar 2006
Posts: 17,289
Campfire Ranger
|
Campfire Ranger
Joined: Mar 2006
Posts: 17,289 |
Don't know about the newer ones but my 1998 Chevy has "shift on the fly 4wd" and it's not speed restricted. I don't put into 4WD at 70 mph but 50 mph is not a problem. Just ease off on the throttle and it shifts smooth in or out of 4HI.
|
|
|
|
Joined: Nov 2008
Posts: 4,205 Likes: 1
Campfire Tracker
|
Campfire Tracker
Joined: Nov 2008
Posts: 4,205 Likes: 1 |
Yes, 50 is not a problem, I just have no real reason to go into 4x4 at 50 (no snow around here). Gotta go slow for 4 low to engage.
|
|
|
|
Joined: Jan 2006
Posts: 19,816 Likes: 1
Campfire Ranger
|
Campfire Ranger
Joined: Jan 2006
Posts: 19,816 Likes: 1 |
My 2005 Silverado was doing that (showing that message) a few weeks ago and it wouldn't shift the transfer case at all. I finally pulled and replaced a few fuses that seemed related (none were burned out) and everything returned to normal. Go figure.
"Be sure you're right. Then go ahead." Fess Parker as Davy Crockett
|
|
|
|
Joined: Aug 2010
Posts: 48,090 Likes: 6
Campfire 'Bwana
|
Campfire 'Bwana
Joined: Aug 2010
Posts: 48,090 Likes: 6 |
I've experienced the same thing. Generally the transfer case connector needs to be cleaned and make sure it is plugged in tight and dry. The next thing that generally fails on these is the 4x4 selector switch on the dash. Not very likely that it is the differential actuator or anything like that. The autotrac/autotracII and computer control devices on these GM's can and have been very troublesome to some. Do an internet search and you'll see what I mean. Changing the fuses like one guy suggested doesn't do anything. Especially when the fuses aren't burnt. Sometimes if your getting a service 4x4 soon display, you can turn the vehicle off, wait a few minutes and re-start and the problem seems to have gone away. You can also disconnect the battery cable and the same thing happens. If the problem persists, I'd be highly suspect of the 4x4 selector switch on the dash...
I try to stick with the basics, they do so well. Nothing fancy mind you, just plain jane will get it done with style. You want to see an animal drop right now? Shoot him in the ear hole. BSA MAGA
|
|
|
|
Joined: Jan 2006
Posts: 19,816 Likes: 1
Campfire Ranger
|
Campfire Ranger
Joined: Jan 2006
Posts: 19,816 Likes: 1 |
I didn't say I replaced the fuses. Pulling and reinserting the right fuse is the equivalent of disconnecting and reconnecting the battery, but a lot easier. Point is, it worked.
"Be sure you're right. Then go ahead." Fess Parker as Davy Crockett
|
|
|
|
Joined: Nov 2002
Posts: 33,721 Likes: 2
Campfire 'Bwana
|
Campfire 'Bwana
Joined: Nov 2002
Posts: 33,721 Likes: 2 |
My 2005 Silverado was doing that (showing that message) a few weeks ago and it wouldn't shift the transfer case at all. I finally pulled and replaced a few fuses that seemed related (none were burned out) and everything returned to normal. Go figure. Huh?
Conduct is the best proof of character.
|
|
|
|
Joined: Aug 2010
Posts: 48,090 Likes: 6
Campfire 'Bwana
|
Campfire 'Bwana
Joined: Aug 2010
Posts: 48,090 Likes: 6 |
That's how I read it too Ed, but didn't feel like arguing.
I try to stick with the basics, they do so well. Nothing fancy mind you, just plain jane will get it done with style. You want to see an animal drop right now? Shoot him in the ear hole. BSA MAGA
|
|
|
|
Joined: Jan 2006
Posts: 69,390 Likes: 4
Campfire Kahuna
|
Campfire Kahuna
Joined: Jan 2006
Posts: 69,390 Likes: 4 |
I didn't say I replaced the fuses. Pulling and reinserting the right fuse is the equivalent of disconnecting and reconnecting the battery, but a lot easier. Point is, it worked. If that worked, quite possibly disconnecting it reset something, kind of like rebooting a computer.
“In a time of deceit telling the truth is a revolutionary act.” ― George Orwell
It's not over when you lose. It's over when you quit.
|
|
|
|
Joined: Jan 2006
Posts: 19,816 Likes: 1
Campfire Ranger
|
Campfire Ranger
Joined: Jan 2006
Posts: 19,816 Likes: 1 |
My 2005 Silverado was doing that (showing that message) a few weeks ago and it wouldn't shift the transfer case at all. I finally pulled and replaced a few fuses that seemed related (none were burned out) and everything returned to normal. Go figure. Huh? Sorry, "replaced" as in put back in place i.e. reinserted. I have an excuse but never mind. I'm better now.
"Be sure you're right. Then go ahead." Fess Parker as Davy Crockett
|
|
|
|
638 members (007FJ, 160user, 10ring1, 10gaugeman, 10Glocks, 12344mag, 63 invisible),
2,652
guests, and
1,400
robots. |
Key:
Admin,
Global Mod,
Mod
|
|
Forums81
Topics1,192,213
Posts18,485,459
Members73,966
|
Most Online11,491 Jul 7th, 2023
|
|
|
|