Issue with Transfer Case Control Module

[CWhitmarsh]

Hello,

 

Let me start by saying I have almost zero mechanical aptitude. Engines are magical beings to me that somehow have been transported into our world from a parallel universe by an alien race. I once thought I had to put oil into the engine through the dipstick hole...

 

Hopefully that paints a clear enough picture...

 

I have a 2003 Chevy Silverado 2500HD that is having issues with switching in and out of 4 wheel drive. I took it to a mechanic and they told me the Transfer Case Control Module needed to be replaced as it was no longer communicating with... something, I seriously don't remember what exactly they said. I do remember they said it was going to be just over $500.. now numbers, I do understand; and that's a higher number than I am comfortable with.

 

My truck's 4 wheel drive selection switch has 3 buttons (2wd, 4hi, and 4lo). The TCCM for the three button model is over $300, but the TCCM for a 4 button switch (auto 4wd plus my three) is like $160, much better for my numbers.

 

Here is my question... If it's a stupid just scroll back up and read about the dipstick hole; Can I use the TCCM for the 4 button in my truck even though I only have the 3 button switch? Or can I use the TCCM for the 4 button switch and replace my switch with the 4 button switch? The back of the TCCMs appear to be the same, only 3 connector ports for the wiring harness, so I thought I'd ask.

 

In case anyone is cringing over the thought that I might attempt this repair myself, take a breath, I'm going to pay a colleague at work to do the install and hopefully save a little money.

 

Thanks,

Chris

[anumber1]

Nope, it's not going to work.

 

It's expensive because it's rare. Most are equipped with the much more common auto tcase.

 

It isn't a bad job to diy, however, I'm not completely sure that it isn't the tcase actuator. I have replaced many of those and zero tccms.

[SpartanAutoworx]

Get a used use one and have it programmed. Cheap and easy

[CWhitmarsh]

Thank you for the responses. I will see what I can find at the local auto parts dealer.

[Graycharles88]

You don't have to have a used one programmed, just plug and play. Only new ones have to be. Good luck.

[SpartanAutoworx]

You don't have to have a used one programmed, just plug and play. Only new ones have to be. Good luck.

 

 

Unless 3 button to 4 button or vise versa. If its matching 4 button to 4 and 3 to 3 no issues.

[Andrew Leigh]

Does someone have a video of how to replace the TCCM for a 2000 GMC Yukon? I am wondering how much of the dash I will need to remove at be able to access it well enought to replace it.