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The Dreaded "service 4x4" Message

satori

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satori Enthusiast

satori

Posted
Posted

I've started getting "Service 4x4" on the DIC on my '05 Tahoe. Today the indicator switch said the transfer case was in neutral, but I was driving so I know that wasn't true. I stopped, turned it off, and restarted it, and was able to shift it back to 2-Hi.

 

I've only had the truck for a few months, but I do have the warranty claim history on it. Almost exactly every 20,000 miles it's had this warranty entry:

 

"B K4124 - SENSOR ASSEMBLY, TRANSFER CASE RANGE SELECTOR - REPLACE"

 

It's now almost exactly 20,000 miles since the last entry so I'd say it's a safe bet that it's the same thing again.

 

I have 2 questions:

 

1) What exactly is the part this refers to? Is it just the switch on the dash or is it a part on the transfer case?

2) What if I don't fix it for a while - will it cause other problems or become undriveable? I'm not planning to use 4x4 any time soon.

 

Thanks in advance! :thumbs:

satori Enthusiast

satori

Posted
  • Author
Posted

Does anyone in the day crowd know what part this warranty claim entry refers to?

 

B K4124 - SENSOR ASSEMBLY, TRANSFER CASE RANGE SELECTOR - REPLACE

jrrod2004 Senior Enthusiast

jrrod2004

Posted
Posted
Does anyone in the day crowd know what part this warranty claim entry refers to?

 

B K4124 - SENSOR ASSEMBLY, TRANSFER CASE RANGE SELECTOR - REPLACE

 

I would say that either the sensor itself for the 4WD system was replaced or the switch, but I would have to say sensor because if it was the switch, it would probabaly say selector or something like that

jrrod2004 Senior Enthusiast

jrrod2004

Posted
Posted

RICH, (MS3DALE) would be able to tell you exactly whats up based on that warranty date.

satori Enthusiast

satori

Posted
  • Author
Posted
RICH, (MS3DALE) would be able to tell you exactly whats up based on that warranty date.

 

Ah, well if the claim dates help, it's been replaced on the following dates:

 

10/14/2005

07/06/2006

05/30/2007

10/31/2007

 

VIN : 1GNEK13T35R211862

MS3DALE Senior Enthusiast

MS3DALE

Posted
Posted
I've started getting "Service 4x4" on the DIC on my '05 Tahoe. Today the indicator switch said the transfer case was in neutral, but I was driving so I know that wasn't true. I stopped, turned it off, and restarted it, and was able to shift it back to 2-Hi.

 

I've only had the truck for a few months, but I do have the warranty claim history on it. Almost exactly every 20,000 miles it's had this warranty entry:

 

"B K4124 - SENSOR ASSEMBLY, TRANSFER CASE RANGE SELECTOR - REPLACE"

 

It's now almost exactly 20,000 miles since the last entry so I'd say it's a safe bet that it's the same thing again.

 

I have 2 questions:

 

1) What exactly is the part this refers to? Is it just the switch on the dash or is it a part on the transfer case?

2) What if I don't fix it for a while - will it cause other problems or become undriveable? I'm not planning to use 4x4 any time soon.

 

Thanks in advance! :lol:

 

 

It is just what it says (Not to be smart) The transfer case range selector sensor,It is a part on the transfer case itself,Its actually mounted inside the encoder motor (which is on the transfer case)

 

Heres the line comments from one of the repairs on your truck...

 

GM Vehicle Inquiry System

Line Comments

 

VIN : 1GNEK13T35R211862

LINE COMMENTS

Repair Order Date : 07/06/2006

Repair Order Number : 136349

Odometer Reading : 28751 miles

Serviced By :

BROWN AND BROWN CHEVROLET, INC.

145 E MAIN

MESA, AZ 85201-7466

Cycle Date Cycle Nbr Case Type Labor Operation Part

07/11/2006 707 01 # K4124 - SENSOR ASSEMBLY, TRANSFER CASE RANGE SELECTOR - REPLACE - PART#88962315 - SENSOR

Comments C-S SERVICE 4X4 LIGHT IS ON AND STABILITY TRAC MESSAGE IS ON. CK FOR CODES CO327 PERFORMED DIANOSIS REPLACED ENCODER MOTOR SENSOR NOW OK

 

© 1998-2005 General Motors Corporation. All Rights Reserved.

satori Enthusiast

satori

Posted
  • Author
Posted

Thanks for the reply Rich, I don't have the line comments on my report. So I would just ask for a transfer case range selector sensor? I can't repair it just yet, but I'm getting prepared. Do you know if it will cause any problems to keep driving it like this, or can I just continue to acknowledge it whenever it pops up?

Thanks again.

MS3DALE Senior Enthusiast

MS3DALE

Posted
Posted

Just give them the part number.....88962315.

As far as driving it,I think you'd be OK as long as you don't need four-wheel drive,Although I can't swear to it.

Have you tried putting it in four-wheel drive?

MS3DALE Senior Enthusiast

MS3DALE

Posted
Posted
I haven't tried putting it in 4wd since this started. I'm afraid it wouldn't come back out.

 

Yeah,I know what you mean.....Personally,I'd try out the 4wd though and see what happens.

Maybe Super Stealth can chime in,I see you lurking down there :lol:

MS3DALE Senior Enthusiast

MS3DALE

Posted
Posted
I probably would, but I really need it to get back and forth to Tucson every day right now.

 

Yeah I understand,Its a little easier for me to "take a chance" and try something like that out though,since I work where I work and have access to techs.,a lift,and a TECH2 scan tool! :lol:

MS3DALE Senior Enthusiast

MS3DALE

Posted
Posted

You know whats funny (Well its not,but you know what I mean) This will be the what,4th one replaced? Seems like something else is causing that sensor to go bad.

Question is,What? :lol:

satori Enthusiast

satori

Posted
  • Author
Posted
You know whats funny (Well its not,but you know what I mean) This will be the what,4th one replaced? Seems like something else is causing that sensor to go bad.

Question is,What? :lol:

 

Fifth actually (in 76k miles), and it would be nice to find out why it keeps going out.

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