How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Pete Your Own Question

Pete
Pete, Auto Mechanic
Category: Chevy
Satisfied Customers: 15798
Experience:  14 years GM dealer Technician.
14928985
Type Your Chevy Question Here...
Pete is online now
A new question is answered every 9 seconds

2005 Chevy Silverado 1500: Control Module..service 4x4 drive error

Resolved Question:

I have a 2005 Chevy Silverado 1500 Z21, I have replaced the TCCM (Transfer Case Control Module). The TCCM was programmed by the dealer. I am still recieving a service 4x4 drive error on my lcd panel, but now the TCCM can comunicate with the scan tool. When I start the car the switch box illuminates (Auto,2wd...ect). When I hit a button before or after the 4x4 service message nothing happens. I got the switch box tested and everything is in working order. Before I got the new TCCM I was able to switch to 4x4 intermediately. The technician said that the Transfer Case Encoder Motor had to be replaced. Since I was able to shift into 4wd before the replacement of the TCCM do I really need the whole assembly? Do I need to replace the Transfer Case Encoder Motor or can I just replace the Transfer Case Encoder Motor Sensor and gasket?
Submitted: 2 years ago.
Category: Chevy
Expert:  Pete replied 2 years ago.
Hello,I will be glad to try and assist you with this,Welcome to Just Answer.

Hi.

I just need a little more info to assist better.

Have the fault codes been rechecked since the TCCM was replaced and if so do you know the fault code number that is set?

Were you not able to communicate with the old TCCM?

Let me know so we can continue,Thanks Pete!
Customer: replied 2 years ago.
The code that the technicain pulled off the scan tool was C0327 Encoder Circuit Malfunction. Yes, the tech was not able to communicate with the TCCM until it was replaced. The rpo for the transfercase is np8. This code was checked then cleared and rechecked again, it kept comming up.
Expert:  Pete replied 2 years ago.
O.k.

The code you have set does correspond with the sensor in the encoder motor on the transfer case failing which will cause this issue you have here on this vehicle.The only thing that would make me think it needs the entire encoder motor is the case that the old TCCM could not be communicated with because in some cases the encoder motor can short internally and this short can feed back to the TCCM and short out the TCCM to where it cannot be communicated with.This may be the case here and maybe why he/she wants to replace the entire motor.

This code can also indicate the encoder motor is at fault needing replaced,in most cases when it is just the sensor the TCCM can be communicated with.The sensor is the cheaper repair here but its hard to say for sure from here if it will correct this issue or if you need the entire encoder motor.

I would ask the mechanic what kind of guarantee he/she will give that this will correct the issue and if it doesn't if they will cover the costs of the next repair.

Let me know if you need anything else,click accept if you feel satisfied with your answer as this is how I get credited for my time,Thanks Pete!
Pete, Auto Mechanic
Category: Chevy
Satisfied Customers: 15798
Experience: 14 years GM dealer Technician.
Pete and 13 other Chevy Specialists are ready to help you
Customer: replied 2 years ago.
Do you know the part number of the Encoder motor?
Expert:  Pete replied 2 years ago.
The number I come up with for this (this should be double checked by a dealers parts department) is 88984528.You can also get one of these from a local parts store for a cheaper cost.I don't know the after market part numbers as these vary depending on manufacturer.

Let me know if you need anything else,click accept if you feel satisfied with your answer as this is how I get credited for my time,Thanks Pete!

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
< Last | Next >
  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Tim's Auto Repair

    mechanic

    Satisfied Customers:

    7641
    Have owned a repair shop for 25 yrs.
< Last | Next >
  • http://ww2.justanswer.com/uploads/TI/tim37857/2011-10-28_23053_S6301814.64x64.JPG Tim's Auto Repair's Avatar

    Tim's Auto Repair

    mechanic

    Satisfied Customers:

    7641
    Have owned a repair shop for 25 yrs.
  • http://ww2.justanswer.com/uploads/DT/dt69nova/2012-6-15_234154_pic1.64x64.jpg Dave Nova's Avatar

    Dave Nova

    Chevrolet Technician

    Satisfied Customers:

    6870
    ASE Master Certification. GM World Class Certification
  • http://ww2.justanswer.com/uploads/ggrote1/2009-06-27_031011_me.jpg Gary's Avatar

    Gary

    Chevy Technician

    Satisfied Customers:

    5404
    15 years GM master tech
  • http://ww2.justanswer.com/uploads/testedtuff/2009-09-26_170108_pictures.jpg John's Avatar

    John

    Master A.S.E Automotive technician

    Satisfied Customers:

    4071
    A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician
  • http://ww2.justanswer.com/uploads/RO/rodcuda/2011-7-25_224114_Donhoff1.64x64.JPG Neal's Avatar

    Neal

    Chevy Mechanic

    Satisfied Customers:

    2306
    Shop Owner and Mechanic on multiple makes.
  • http://ww2.justanswer.com/uploads/goodwrench9124/2008-11-09_220838_dscf0007.jpg goodwrench9124's Avatar

    goodwrench9124

    ASE Certified Technician

    Satisfied Customers:

    2041
    Ase Master Certified, GM Master Certified Tech. Awarded GM Top performer, Hybrid certified
  • http://ww2.justanswer.com/uploads/DR/drivefast1971/2012-1-12_172422_0009051tQKh.64x64.jpg Ron Z.'s Avatar

    Ron Z.

    - Chevy Tech -

    Satisfied Customers:

    1912
    18+yrs experience. State Inspector and Chevy Diagnostics