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#1774585 - 10/25/10 08:44 AM 2005 Z71 4x4 Problems...Service 4wd
TXW Offline
Veteran Tracker

Registered: 08/24/10
Posts: 2592
Loc: Abilene
Over the last several months, I have been getting the "Service 4wd" message on my display panel. When this happens, I can't switch the panel from 2wd to any of the 4wd options. Sometimes the truck gets stuck in Auto 4wd when I start it and have to restart to get to 2wd.

Has anyone else had this issue? If so, what is the fix? I am thinking I need to take it to the Chevy house, but I know they are going to charge me for every little thing. I appreciate your input.


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#1774595 - 10/25/10 08:48 AM Re: 2005 Z71 4x4 Problems...Service 4wd [Re: TXW]
Jasb Offline
THF Celebrity

Registered: 10/30/08
Posts: 16007
Loc: Tx
I had an 04 that did that all the time. It cost me 400 or so at the Chevy house to fix it.


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#1774596 - 10/25/10 08:49 AM Re: 2005 Z71 4x4 Problems...Service 4wd [Re: TXW]
Big Tony Online   content
THF Trophy Hunter

Registered: 06/10/08
Posts: 7280
Loc: Godley (next to cleanliness)
That could be several things. Ususally it's the 4X selector switch. If I'm not mistaken, I think it can be computer diagnosed. Anybody that has a handheld can do this for you. Good luck.

_________________________

"A hunt based only on trophies taken, falls far short of what the ultimate goal should be." -Fred Bear

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#1774600 - 10/25/10 08:51 AM Re: 2005 Z71 4x4 Problems...Service 4wd [Re: TXW]
fowlplayr Online   confused
Shenanigans Scorecard keeper
Extreme Tracker

Registered: 08/03/05
Posts: 3927
Loc: Athens/Prosper, TX
Mine has been coming on every now and then, but I never have any problems with it switching into 4WD. I've heard that it is probably the switch itself; shorting out, bad connection etc. Another common issue I found on the net was the sensor in the hub. If you do not periodically drive it in 4wd, the sensor gets dry and sends the message.

FYI - the switch is $95.00 at Auto Zone.



Edited by fowlplayr (10/25/10 08:53 AM)
_________________________
Originally Posted By: smithwr
That goofy wench in the background would be the first one to get ground checked.

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#1774602 - 10/25/10 08:52 AM Re: 2005 Z71 4x4 Problems...Service 4wd [Re: Big Tony]
fowlplayr Online   confused
Shenanigans Scorecard keeper
Extreme Tracker

Registered: 08/03/05
Posts: 3927
Loc: Athens/Prosper, TX
Originally Posted By: Big Tony
That could be several things. Ususally it's the 4X selector switch. If I'm not mistaken, I think it can be computer diagnosed. Anybody that has a handheld can do this for you. Good luck.


Yep, but I found that a replacement switch is cheaper than the danged diagnostic fee. hammer

_________________________
Originally Posted By: smithwr
That goofy wench in the background would be the first one to get ground checked.

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#1774611 - 10/25/10 08:56 AM Re: 2005 Z71 4x4 Problems...Service 4wd [Re: fowlplayr]
TXW Offline
Veteran Tracker

Registered: 08/24/10
Posts: 2592
Loc: Abilene
I haven't had a problem in about a month and then used 4wd this weekend at the lease. I was about a mile down the road yesterday after leaving the lease and the "Service 4wd" came on. Didn't think much about it until this morning when none of the lights on the switch are working.


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#1774612 - 10/25/10 08:56 AM Re: 2005 Z71 4x4 Problems...Service 4wd [Re: fowlplayr]
BOBO the Clown Online   content
decoy
THF Celebrity

Registered: 04/19/07
Posts: 32404
Loc: Metroplex
Had to replace the wife 05 avalanche's switch twice now


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#1774613 - 10/25/10 08:57 AM Re: 2005 Z71 4x4 Problems...Service 4wd [Re: fowlplayr]
Big Tony Online   content
THF Trophy Hunter

Registered: 06/10/08
Posts: 7280
Loc: Godley (next to cleanliness)
Remember, You don't always have to take it to the dealer for diagnosis. You can go too a ton of different places, Pep Boys, Auto Zone etc. I aint hatin on the dealerships, I used to work there. I just don't contribute to 5000 sf house payments unless I have to.

_________________________

"A hunt based only on trophies taken, falls far short of what the ultimate goal should be." -Fred Bear

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#1774617 - 10/25/10 08:59 AM Re: 2005 Z71 4x4 Problems...Service 4wd [Re: Big Tony]
TXW Offline
Veteran Tracker

Registered: 08/24/10
Posts: 2592
Loc: Abilene
If it is the switch on the dash, is it difficult to replace? Do I have to remove the complete dash?


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#1774625 - 10/25/10 09:04 AM Re: 2005 Z71 4x4 Problems...Service 4wd [Re: TXW]
Big Tony Online   content
THF Trophy Hunter

Registered: 06/10/08
Posts: 7280
Loc: Godley (next to cleanliness)
I'm not real familiar with '05's, that's the year I got out of the bizz. I believe the bezel snaps off the dash and the switch is attached to the bezel. Get someone to look at it to be sure.

_________________________

"A hunt based only on trophies taken, falls far short of what the ultimate goal should be." -Fred Bear

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#1774628 - 10/25/10 09:05 AM Re: 2005 Z71 4x4 Problems...Service 4wd [Re: TXW]
fowlplayr Online   confused
Shenanigans Scorecard keeper
Extreme Tracker

Registered: 08/03/05
Posts: 3927
Loc: Athens/Prosper, TX
It's not too bad. Put it in 1st, then pop-off the dash. The problem that I ran into was that the wires on the original switch were so short, it made it hard to pull it out to where you had some room to work on it. Be careful not to break the tabs pulling the dash out.



Edited by fowlplayr (10/25/10 09:11 AM)
_________________________
Originally Posted By: smithwr
That goofy wench in the background would be the first one to get ground checked.

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#1778817 - 10/26/10 03:14 PM Re: 2005 Z71 4x4 Problems...Service 4wd [Re: TXW]
cc4500 Offline
Outdoorsman

Registered: 10/01/10
Posts: 51
I have a 2000 4x4 suburban that had same problem. It would get stuck in 4 auto and i would have to pull dash and disconnet switch and then it would go back to 2wd. I just replaced the switch with a used one from a salvage yard and have not had any problems since. Not hard to replace the switch at all. Just follow the previous post about putting in 1st gear, pulling dash back, i think remove to screws that hold switch and disconnet. Good luck.


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#1778853 - 10/26/10 03:26 PM Re: 2005 Z71 4x4 Problems...Service 4wd [Re: cc4500]
TXW Offline
Veteran Tracker

Registered: 08/24/10
Posts: 2592
Loc: Abilene
I am confused as to the "putting in 1st gear" statement. Do I put it in drive so the gear shift is far enough down for the dash to clear? Thanks for the help.


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#1778870 - 10/26/10 03:32 PM Re: 2005 Z71 4x4 Problems...Service 4wd [Re: TXW]
ramit315 Offline
Tracker

Registered: 06/17/06
Posts: 603
Originally Posted By: TX Wiley
I am confused as to the "putting in 1st gear" statement. Do I put it in drive so the gear shift is far enough down for the dash to clear? Thanks for the help.
#

Yeah just drop your shifter as far down as you can so the dash will clear it


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#1779882 - 10/26/10 08:51 PM Re: 2005 Z71 4x4 Problems...Service 4wd [Re: ramit315]
Big Tony Online   content
THF Trophy Hunter

Registered: 06/10/08
Posts: 7280
Loc: Godley (next to cleanliness)
Tilting your steering wheel all the way down, ans shifting into low will make the bezel clear the column/shifter better coming off.

_________________________

"A hunt based only on trophies taken, falls far short of what the ultimate goal should be." -Fred Bear

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