Tow truck tranny issues, back again

Alan Roehrich · 06-22-2024, 09:30 AM

A stand alone TCU is a waste. There's no reason to need one or go through the hassle.The stock stuff works fine, there's several million dollars worth of R&D behind them for reliability. Adding some stand alone controller requires more wiring harness and adapting/interfacing that just adds complexity, and does not guarantee a solution.

It's more likely to be a wiring harness problem than an ECU. The wiring diagram for your truck can be found online, probably for free.

There are two ATSG manuals that are good for that transmission, one is a dedicated rebuild manual, the other is a manual that covers it and the 4L60E, and includes the electronic/electrical diagnosis.

06-22-2024, 09:30 AM	#11
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,118 Likes: 1,576 Liked 1,837 Times in 417 Posts	Re: Tow truck tranny issues, back again A stand alone TCU is a waste. There's no reason to need one or go through the hassle.The stock stuff works fine, there's several million dollars worth of R&D behind them for reliability. Adding some stand alone controller requires more wiring harness and adapting/interfacing that just adds complexity, and does not guarantee a solution. It's more likely to be a wiring harness problem than an ECU. The wiring diagram for your truck can be found online, probably for free. There are two ATSG manuals that are good for that transmission, one is a dedicated rebuild manual, the other is a manual that covers it and the 4L60E, and includes the electronic/electrical diagnosis. __________________ Alan Roehrich 212A G/S