Transmission Control Module Info Req

[S33k3r]

I finally gave up due to lack of time and the need to get my 2005 Suburban 1500 back on the road, and had it towed to a transmission shop to rebuild the 4660e. I am now being told it needs a replacement Transmission Control Module... Anyone else had to replace one of these yet? When I originally connected my Tech II to it, the error indicated was transmission solenoids. I never had time to tear into it, but a friend who used to be a GM mechanic indicated it was likely the wiring harness and not even the solenoids...

Does anyone here have any experience with this? If I have to pay for a new Transmission Control Module, I am either going to get it towed back to my house and add a used one, or I am going to part the Suburban out.

Your advice is most appreciated.

 

[rockola1971]

I finally gave up due to lack of time and the need to get my 2005 Suburban 1500 back on the road, and had it towed to a transmission shop to rebuild the 4660e. I am now being told it needs a replacement Transmission Control Module... Anyone else had to replace one of these yet? When I originally connected my Tech II to it, the error indicated was transmission solenoids. I never had time to tear into it, but a friend who used to be a GM mechanic indicated it was likely the wiring harness and not even the solenoids...

Does anyone here have any experience with this? If I have to pay for a new Transmission Control Module, I am either going to get it towed back to my house and add a used one, or I am going to part the Suburban out.

Your advice is most appreciated.

Tell the shop that you'll take a huge bite out of the TCM if they can manage to pull a TCM out of your Suburban. Your tranny is controlled by the PCM which controls the engine also. GM didnt start splitting up the PCM into a TCM and a ECM as separate modules until 2007.

 

[S33k3r]

Honestly, I had talked to them before seeing this update, and asked questions they were very surprised by. The funniest things was when I described the inside of the transmission and the pieces -- aside from the wear pieces -- that often go bad and what the fixes were.

My biggest problem is that I have a great deal of theoretical knowledge -- I hyperfocus on stuff when I am trying to learn it -- but not as much practical knowledge as I would like. This Suburban was supposed to me my practical experience, but I have run out of time to get it completed, and I have 3+ additional projects that need my attention "RIGHT NAO!" So I figured I'd take a chance on the transmission shop. We'll see how they are, but I suspect their warranty is going to be useless. :-(

Please wish me luck.

EDIT: TYVM @rockola1971 Notice I forgot to thank you -- wanted you to know your information was appreciated.

 

[S33k3r]

Ug. How often do the valve bodies go bad in a 4l60e? Don't trust these guys...

 

[rockola1971]

Ug. How often do the valve bodies go bad in a 4l60e? Don't trust these guys...

Some of the bores get worn and get burrs causing valves to stick. The update kit for the valve body takes care of all of that. The update should be done every time a tranny is rebuilt.

 

[S33k3r]

Thanks.